./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/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_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/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_4a9b3bf4-10fc-4c07-b996-6037665a6f46/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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- 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 12:47:45,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:47:45,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:47:46,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:47:46,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:47:46,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:47:46,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:47:46,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:47:46,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:47:46,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:47:46,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:47:46,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:47:46,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:47:46,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:47:46,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:47:46,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:47:46,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:47:46,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:47:46,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:47:46,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:47:46,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:47:46,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:47:46,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:47:46,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:47:46,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:47:46,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:47:46,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:47:46,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:47:46,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:47:46,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:47:46,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:47:46,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:47:46,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:47:46,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:47:46,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:47:46,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:47:46,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:47:46,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:47:46,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:47:46,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:47:46,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:47:46,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 12:47:46,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:47:46,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:47:46,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:47:46,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:47:46,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:47:46,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:47:46,111 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:47:46,111 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 12:47:46,111 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 12:47:46,112 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 12:47:46,113 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 12:47:46,113 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 12:47:46,113 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 12:47:46,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:47:46,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:47:46,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:47:46,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:47:46,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:47:46,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:47:46,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 12:47:46,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 12:47:46,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 12:47:46,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:47:46,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:47:46,116 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 12:47:46,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:47:46,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 12:47:46,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:47:46,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:47:46,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:47:46,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:47:46,119 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 12:47:46,119 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_4a9b3bf4-10fc-4c07-b996-6037665a6f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2022-11-20 12:47:46,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:47:46,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:47:46,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:47:46,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:47:46,421 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:47:46,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/loop-lit/gr2006.i [2022-11-20 12:47:49,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:47:49,675 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:47:49,676 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/sv-benchmarks/c/loop-lit/gr2006.i [2022-11-20 12:47:49,680 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/data/284a92158/c97ac744df704be79ae7dda228e5021b/FLAGcc812fe8f [2022-11-20 12:47:49,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/data/284a92158/c97ac744df704be79ae7dda228e5021b [2022-11-20 12:47:49,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:47:49,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:47:49,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:49,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:47:49,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:47:49,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3e66f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49, skipping insertion in model container [2022-11-20 12:47:49,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:47:49,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:47:49,955 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_4a9b3bf4-10fc-4c07-b996-6037665a6f46/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2022-11-20 12:47:49,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:49,982 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:47:49,997 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_4a9b3bf4-10fc-4c07-b996-6037665a6f46/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2022-11-20 12:47:50,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:50,017 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:47:50,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50 WrapperNode [2022-11-20 12:47:50,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:50,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:50,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:47:50,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:47:50,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,045 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-11-20 12:47:50,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:50,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:47:50,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:47:50,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:47:50,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:47:50,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:47:50,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:47:50,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:47:50,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (1/1) ... [2022-11-20 12:47:50,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:50,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:50,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 12:47:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:47:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:47:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:47:50,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:47:50,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:47:50,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:47:50,328 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:47:50,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:47:50,334 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:47:50,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:50 BoogieIcfgContainer [2022-11-20 12:47:50,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:47:50,338 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 12:47:50,338 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 12:47:50,342 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 12:47:50,343 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:47:50,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:47:49" (1/3) ... [2022-11-20 12:47:50,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48b82017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:47:50, skipping insertion in model container [2022-11-20 12:47:50,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:47:50,344 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:50" (2/3) ... [2022-11-20 12:47:50,345 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48b82017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:47:50, skipping insertion in model container [2022-11-20 12:47:50,345 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 12:47:50,345 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:50" (3/3) ... [2022-11-20 12:47:50,347 INFO L332 chiAutomizerObserver]: Analyzing ICFG gr2006.i [2022-11-20 12:47:50,399 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 12:47:50,399 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 12:47:50,399 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 12:47:50,399 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 12:47:50,400 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 12:47:50,400 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 12:47:50,400 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 12:47:50,400 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 12:47:50,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:50,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:50,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:47:50,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:47:50,425 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:47:50,425 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:47:50,425 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 12:47:50,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:50,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:50,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:47:50,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:47:50,429 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 12:47:50,430 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:47:50,440 INFO L748 eck$LassoCheckResult]: Stem: 4#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); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 7#L28-2true [2022-11-20 12:47:50,440 INFO L750 eck$LassoCheckResult]: Loop: 7#L28-2true assume !false; 6#L29true assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 12#L29-2true assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 7#L28-2true [2022-11-20 12:47:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 12:47:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:50,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016356853] [2022-11-20 12:47:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:50,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:50,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:50,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2022-11-20 12:47:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58629287] [2022-11-20 12:47:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:50,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:50,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:50,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2022-11-20 12:47:50,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:50,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571258038] [2022-11-20 12:47:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:50,795 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 12:47:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571258038] [2022-11-20 12:47:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571258038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:50,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:50,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:47:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566751442] [2022-11-20 12:47:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:50,861 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:50,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:50,862 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:50,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:50,862 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:47:50,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:50,863 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:50,863 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:50,863 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2022-11-20 12:47:50,863 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:50,863 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:50,881 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 12:47:50,892 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 12:47:50,896 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 12:47:50,905 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 12:47:50,989 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:51,003 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:47:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:51,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:51,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 12:47:51,056 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:51,056 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:47:51,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 12:47:51,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:51,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:51,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:51,118 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:47:51,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-20 12:47:51,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 12:47:51,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:51,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:51,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 12:47:51,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:51,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:51,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:47:51,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,267 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:51,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:51,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:51,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:51,268 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:47:51,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:51,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:51,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2022-11-20 12:47:51,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:51,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:51,270 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 12:47:51,277 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 12:47:51,285 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 12:47:51,293 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 12:47:51,355 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:51,360 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:47:51,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,363 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,372 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 12:47:51,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:51,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:51,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:51,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:51,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:51,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:51,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:51,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 12:47:51,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:51,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,436 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 12:47:51,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:51,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:51,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:51,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:51,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:51,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:51,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:51,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 12:47:51,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:51,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 12:47:51,483 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 12:47:51,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:51,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:51,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:51,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:51,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:51,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:51,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:51,512 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:47:51,523 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:47:51,524 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 12:47:51,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:51,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 12:47:51,582 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:47:51,583 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:47:51,583 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:47:51,583 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-20 12:47:51,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:51,594 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:47:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:51,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:51,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:51,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:51,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:51,723 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 12:47:51,779 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 12:47:51,787 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:47:51,831 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 39 states and 50 transitions. Complement of second has 8 states. [2022-11-20 12:47:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 12:47:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 12:47:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-11-20 12:47:51,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-20 12:47:51,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:51,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-20 12:47:51,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:51,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-20 12:47:51,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:51,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2022-11-20 12:47:51,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:51,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 10 states and 13 transitions. [2022-11-20 12:47:51,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-20 12:47:51,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-20 12:47:51,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2022-11-20 12:47:51,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:47:51,852 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-20 12:47:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2022-11-20 12:47:51,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-20 12:47:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-11-20 12:47:51,878 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-20 12:47:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:47:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:47:51,883 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 12:47:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:51,895 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-20 12:47:51,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-20 12:47:51,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:51,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2022-11-20 12:47:51,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-20 12:47:51,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-20 12:47:51,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-11-20 12:47:51,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:51,897 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-20 12:47:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-11-20 12:47:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-20 12:47:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-20 12:47:51,899 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 12:47:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:47:51,900 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-20 12:47:51,900 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 12:47:51,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-11-20 12:47:51,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:51,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:47:51,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:47:51,902 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-20 12:47:51,902 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:47:51,902 INFO L748 eck$LassoCheckResult]: Stem: 113#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); 114#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 119#L28-2 assume !false; 115#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 116#L29-2 [2022-11-20 12:47:51,902 INFO L750 eck$LassoCheckResult]: Loop: 116#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 117#L28-2 assume !false; 118#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 116#L29-2 [2022-11-20 12:47:51,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-20 12:47:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:51,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467389862] [2022-11-20 12:47:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:51,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:51,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2022-11-20 12:47:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129382806] [2022-11-20 12:47:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:51,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:51,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2022-11-20 12:47:51,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:51,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004186266] [2022-11-20 12:47:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:51,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004186266] [2022-11-20 12:47:51,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004186266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:51,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906313261] [2022-11-20 12:47:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:51,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:51,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:47:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:52,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:47:52,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:52,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:52,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906313261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:52,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:52,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 12:47:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792375321] [2022-11-20 12:47:52,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:52,108 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:52,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:52,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:52,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:52,109 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:47:52,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:52,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:52,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2022-11-20 12:47:52,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:52,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:52,111 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 12:47:52,114 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 12:47:52,121 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 12:47:52,129 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 12:47:52,168 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:52,168 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:47:52,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:52,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:52,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 12:47:52,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:52,193 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:47:52,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:52,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:52,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 12:47:52,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:52,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:52,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 12:47:52,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:52,304 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 8] Nus: [0, 1] [2022-11-20 12:47:52,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,315 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:52,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:52,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 12:47:52,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,361 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:52,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:52,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 12:47:52,415 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:47:52,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,425 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:52,425 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:52,425 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:52,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:52,425 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:47:52,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:52,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:52,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2022-11-20 12:47:52,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:52,426 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:52,426 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 12:47:52,434 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 12:47:52,446 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 12:47:52,453 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 12:47:52,499 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:52,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:47:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,505 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 12:47:52,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:52,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:52,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:52,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:52,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:52,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:52,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:52,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 12:47:52,532 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:52,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,542 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,551 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 12:47:52,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:52,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:52,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:52,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:52,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:52,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:52,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:52,576 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:52,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 12:47:52,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,588 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,597 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 12:47:52,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:52,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:52,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:52,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:52,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:52,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:52,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:52,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 12:47:52,631 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:47:52,634 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:47:52,634 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:47:52,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:52,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:52,639 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:52,649 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:47:52,649 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:47:52,649 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:47:52,649 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-20 12:47:52,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 12:47:52,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:52,654 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:47:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:52,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:52,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:52,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:52,742 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 12:47:52,743 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 12:47:52,744 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 12:47:52,763 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 13 states and 16 transitions. Complement of second has 5 states. [2022-11-20 12:47:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 12:47:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 12:47:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-20 12:47:52,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2022-11-20 12:47:52,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:52,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2022-11-20 12:47:52,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:52,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2022-11-20 12:47:52,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:52,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-11-20 12:47:52,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:52,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2022-11-20 12:47:52,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-20 12:47:52,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-20 12:47:52,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2022-11-20 12:47:52,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:47:52,778 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-20 12:47:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2022-11-20 12:47:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 12:47:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-11-20 12:47:52,781 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-11-20 12:47:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:47:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:47:52,784 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) 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 12:47:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:52,823 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 12:47:52,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2022-11-20 12:47:52,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 12:47:52,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2022-11-20 12:47:52,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 12:47:52,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-20 12:47:52,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2022-11-20 12:47:52,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:52,830 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-20 12:47:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2022-11-20 12:47:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-20 12:47:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 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 12:47:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-20 12:47:52,835 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-20 12:47:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:47:52,839 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-20 12:47:52,839 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 12:47:52,839 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2022-11-20 12:47:52,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 12:47:52,841 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:47:52,841 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:47:52,842 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2022-11-20 12:47:52,842 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:47:52,844 INFO L748 eck$LassoCheckResult]: Stem: 247#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); 248#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 251#L28-2 assume !false; 249#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 250#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 252#L28-2 assume !false; 262#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 261#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 260#L28-2 assume !false; 259#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 258#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 257#L28-2 assume !false; 256#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 254#L29-2 [2022-11-20 12:47:52,844 INFO L750 eck$LassoCheckResult]: Loop: 254#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 255#L28-2 assume !false; 253#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 254#L29-2 [2022-11-20 12:47:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -227870477, now seen corresponding path program 1 times [2022-11-20 12:47:52,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:52,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411585249] [2022-11-20 12:47:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:52,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:52,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2022-11-20 12:47:52,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:52,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303107084] [2022-11-20 12:47:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:52,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:52,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:52,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:52,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:52,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1853936168, now seen corresponding path program 2 times [2022-11-20 12:47:52,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:52,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001727469] [2022-11-20 12:47:52,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:52,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001727469] [2022-11-20 12:47:53,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001727469] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:53,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385996332] [2022-11-20 12:47:53,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:47:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,025 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:47:53,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:47:53,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:47:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:53,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:53,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385996332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:53,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:53,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 12:47:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118458081] [2022-11-20 12:47:53,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:53,211 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:53,212 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:53,212 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:53,212 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:53,212 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:47:53,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:53,212 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:53,212 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2022-11-20 12:47:53,213 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:53,213 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:53,214 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 12:47:53,219 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 12:47:53,222 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 12:47:53,227 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 12:47:53,259 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:53,259 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:47:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:53,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:53,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 12:47:53,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-20 12:47:53,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,328 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:53,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:53,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 12:47:53,383 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:53,383 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 8] Nus: [0, 1] [2022-11-20 12:47:53,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,394 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:53,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:53,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 12:47:53,420 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:53,420 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:47:53,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,431 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:53,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:53,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 12:47:53,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,478 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:53,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:53,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 12:47:53,527 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:47:53,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,531 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:53,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:53,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:53,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:53,532 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:47:53,532 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,532 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:53,532 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:53,532 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2022-11-20 12:47:53,532 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:53,532 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:53,533 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 12:47:53,542 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 12:47:53,545 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 12:47:53,551 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 12:47:53,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:53,594 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:47:53,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,597 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,609 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 12:47:53,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 12:47:53,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:53,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:53,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:53,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:53,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:53,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:53,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:53,639 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:53,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,644 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,648 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 12:47:53,661 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:53,661 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:53,661 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:53,661 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:53,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:53,664 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:53,664 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:53,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 12:47:53,673 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:53,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,678 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,684 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 12:47:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 12:47:53,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:53,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:53,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:53,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:53,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:53,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:53,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:53,708 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:47:53,710 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:47:53,710 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:47:53,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:53,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:53,716 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:53,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:47:53,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:47:53,720 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:47:53,720 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-20 12:47:53,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-20 12:47:53,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:53,725 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:47:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,805 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 12:47:53,806 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 12:47:53,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,816 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 5 states. [2022-11-20 12:47:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 12:47:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 12:47:53,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:47:53,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:53,818 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:47:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,888 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 12:47:53,889 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 12:47:53,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 5 states. [2022-11-20 12:47:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 12:47:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 12:47:53,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:47:53,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:53,899 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 12:47:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:53,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:53,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:53,966 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 12:47:53,967 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 12:47:53,967 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,980 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 27 transitions. Complement of second has 4 states. [2022-11-20 12:47:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-20 12:47:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-11-20 12:47:53,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2022-11-20 12:47:53,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:53,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-20 12:47:53,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:53,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2022-11-20 12:47:53,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:53,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2022-11-20 12:47:53,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 12:47:53,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2022-11-20 12:47:53,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-20 12:47:53,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-20 12:47:53,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2022-11-20 12:47:53,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:47:53,985 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-20 12:47:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2022-11-20 12:47:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-20 12:47:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-20 12:47:53,987 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-20 12:47:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:53,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:47:53,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:47:53,988 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 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 12:47:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:54,029 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-11-20 12:47:54,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2022-11-20 12:47:54,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 12:47:54,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2022-11-20 12:47:54,033 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-11-20 12:47:54,033 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2022-11-20 12:47:54,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2022-11-20 12:47:54,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 12:47:54,033 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-11-20 12:47:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2022-11-20 12:47:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-11-20 12:47:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 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 12:47:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-11-20 12:47:54,038 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-20 12:47:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:47:54,039 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-11-20 12:47:54,039 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 12:47:54,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2022-11-20 12:47:54,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-20 12:47:54,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 12:47:54,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 12:47:54,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2022-11-20 12:47:54,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 12:47:54,042 INFO L748 eck$LassoCheckResult]: Stem: 664#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); 665#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 670#L28-2 assume !false; 666#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 667#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 672#L28-2 assume !false; 698#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 697#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 696#L28-2 assume !false; 695#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 694#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 693#L28-2 assume !false; 692#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 691#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 690#L28-2 assume !false; 689#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 688#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 687#L28-2 assume !false; 686#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 685#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 684#L28-2 assume !false; 683#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 682#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 681#L28-2 assume !false; 680#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 679#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 678#L28-2 assume !false; 677#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 676#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 673#L28-2 [2022-11-20 12:47:54,047 INFO L750 eck$LassoCheckResult]: Loop: 673#L28-2 assume !false; 675#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 674#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 673#L28-2 [2022-11-20 12:47:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:54,047 INFO L85 PathProgramCache]: Analyzing trace with hash 992319728, now seen corresponding path program 2 times [2022-11-20 12:47:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:54,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696380558] [2022-11-20 12:47:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:54,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 40818, now seen corresponding path program 1 times [2022-11-20 12:47:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361608350] [2022-11-20 12:47:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -62870493, now seen corresponding path program 3 times [2022-11-20 12:47:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403769108] [2022-11-20 12:47:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:47:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:47:54,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:47:54,212 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:54,212 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:54,212 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:54,212 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:54,212 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 12:47:54,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:54,213 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:54,213 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2022-11-20 12:47:54,213 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:54,213 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:54,214 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 12:47:54,219 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 12:47:54,227 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 12:47:54,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 12:47:54,272 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:54,272 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 12:47:54,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,276 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:54,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:54,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 12:47:54,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:54,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:54,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 12:47:54,380 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:54,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 1, 6] Nus: [0, 1] [2022-11-20 12:47:54,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,392 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:54,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:54,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 12:47:54,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 12:47:54,423 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 12:47:54,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 12:47:54,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:54,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 12:47:54,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,478 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 12:47:54,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 12:47:54,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 12:47:54,519 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 12:47:54,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,528 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 12:47:54,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 12:47:54,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 12:47:54,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 12:47:54,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 12:47:54,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 12:47:54,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 12:47:54,529 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2022-11-20 12:47:54,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 12:47:54,529 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 12:47:54,530 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 12:47:54,537 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 12:47:54,539 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 12:47:54,546 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 12:47:54,583 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 12:47:54,584 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 12:47:54,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,585 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 12:47:54,590 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 12:47:54,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:54,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:54,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:54,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:54,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:54,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:54,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:54,623 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:54,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,634 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,637 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 12:47:54,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:54,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:54,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:54,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:54,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:54,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 12:47:54,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:54,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:54,671 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 12:47:54,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,681 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,686 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 12:47:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 12:47:54,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 12:47:54,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 12:47:54,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 12:47:54,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 12:47:54,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 12:47:54,701 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 12:47:54,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 12:47:54,710 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 12:47:54,714 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 12:47:54,714 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 12:47:54,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 12:47:54,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:54,718 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:54,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 12:47:54,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 12:47:54,720 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 12:47:54,720 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 99 Supporting invariants [] [2022-11-20 12:47:54,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 12:47:54,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:54,730 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 12:47:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:54,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:47:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:54,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:47:54,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:54,838 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 12:47:54,838 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 12:47:54,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:54,854 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 65 transitions. Complement of second has 6 states. [2022-11-20 12:47:54,855 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 12:47:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-20 12:47:54,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2022-11-20 12:47:54,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:54,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2022-11-20 12:47:54,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:54,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2022-11-20 12:47:54,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 12:47:54,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2022-11-20 12:47:54,859 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 12:47:54,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2022-11-20 12:47:54,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 12:47:54,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 12:47:54,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 12:47:54,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:47:54,860 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:47:54,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:47:54,860 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:47:54,860 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 12:47:54,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:47:54,860 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 12:47:54,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 12:47:54,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:47:54 BoogieIcfgContainer [2022-11-20 12:47:54,869 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 12:47:54,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:47:54,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:47:54,870 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:47:54,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:50" (3/4) ... [2022-11-20 12:47:54,873 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:47:54,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:47:54,874 INFO L158 Benchmark]: Toolchain (without parser) took 5164.30ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 126.7MB in the beginning and 83.8MB in the end (delta: 42.9MB). Peak memory consumption was 79.0MB. Max. memory is 16.1GB. [2022-11-20 12:47:54,875 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 159.4MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:47:54,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.58ms. Allocated memory is still 159.4MB. Free memory was 126.1MB in the beginning and 116.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:47:54,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.95ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 114.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:47:54,876 INFO L158 Benchmark]: Boogie Preprocessor took 25.89ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 113.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:47:54,876 INFO L158 Benchmark]: RCFGBuilder took 263.97ms. Allocated memory is still 159.4MB. Free memory was 113.6MB in the beginning and 104.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:47:54,876 INFO L158 Benchmark]: BuchiAutomizer took 4531.11ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 103.8MB in the beginning and 83.8MB in the end (delta: 20.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-11-20 12:47:54,877 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 192.9MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:47:54,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 159.4MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.58ms. Allocated memory is still 159.4MB. Free memory was 126.1MB in the beginning and 116.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.95ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 114.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.89ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 113.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 263.97ms. Allocated memory is still 159.4MB. Free memory was 113.6MB in the beginning and 104.4MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4531.11ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 103.8MB in the beginning and 83.8MB in the end (delta: 20.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 192.9MB. Free memory is still 83.8MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 99 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 49 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s 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 12:47:54,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:55,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:55,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-20 12:47:55,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:55,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 12:47:55,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9b3bf4-10fc-4c07-b996-6037665a6f46/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