./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/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_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/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 64bit --witnessprinter.graph.data.programhash 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:51:26,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:51:26,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:51:26,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:51:26,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:51:26,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:51:26,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:51:26,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:51:26,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:51:27,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:51:27,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:51:27,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:51:27,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:51:27,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:51:27,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:51:27,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:51:27,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:51:27,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:51:27,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:51:27,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:51:27,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:51:27,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:51:27,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:51:27,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:51:27,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:51:27,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:51:27,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:51:27,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:51:27,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:51:27,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:51:27,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:51:27,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:51:27,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:51:27,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:51:27,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:51:27,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:51:27,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:51:27,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:51:27,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:51:27,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:51:27,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:51:27,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 10:51:27,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:51:27,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:51:27,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:51:27,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:51:27,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:51:27,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:51:27,090 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:51:27,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 10:51:27,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 10:51:27,090 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 10:51:27,091 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 10:51:27,092 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 10:51:27,092 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 10:51:27,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:51:27,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:51:27,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:51:27,093 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 10:51:27,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:51:27,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 10:51:27,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:51:27,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:51:27,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:51:27,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:51:27,096 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 10:51:27,096 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_2b173069-1a75-49f5-938e-cad5a76cd6fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2022-11-20 10:51:27,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:51:27,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:51:27,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:51:27,408 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:51:27,408 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:51:27,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-11-20 10:51:30,503 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:51:30,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:51:30,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-11-20 10:51:30,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/data/8571f216d/47434277ce2b4a368bd816fc9b1337c3/FLAG1e9124b79 [2022-11-20 10:51:30,717 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/data/8571f216d/47434277ce2b4a368bd816fc9b1337c3 [2022-11-20 10:51:30,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:51:30,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:51:30,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:30,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:51:30,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:51:30,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760e9d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30, skipping insertion in model container [2022-11-20 10:51:30,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:51:30,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:51:30,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:30,880 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:51:30,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:30,904 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:51:30,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30 WrapperNode [2022-11-20 10:51:30,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:30,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:30,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:51:30,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:51:30,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,936 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-20 10:51:30,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:30,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:51:30,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:51:30,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:51:30,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,956 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:51:30,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:51:30,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:51:30,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:51:30,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (1/1) ... [2022-11-20 10:51:30,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:30,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:30,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:31,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 10:51:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:51:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:51:31,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:51:31,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:51:31,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:51:31,225 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:51:31,225 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:51:31,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:31 BoogieIcfgContainer [2022-11-20 10:51:31,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:51:31,234 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 10:51:31,234 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 10:51:31,238 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 10:51:31,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:51:31,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:51:30" (1/3) ... [2022-11-20 10:51:31,240 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c40920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:51:31, skipping insertion in model container [2022-11-20 10:51:31,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:51:31,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:30" (2/3) ... [2022-11-20 10:51:31,240 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c40920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:51:31, skipping insertion in model container [2022-11-20 10:51:31,241 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 10:51:31,241 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:31" (3/3) ... [2022-11-20 10:51:31,242 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2022-11-20 10:51:31,334 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 10:51:31,334 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 10:51:31,334 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 10:51:31,334 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 10:51:31,334 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 10:51:31,335 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 10:51:31,335 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 10:51:31,335 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 10:51:31,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 10:51:31,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:31,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:31,379 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:51:31,379 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 10:51:31,379 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 10:51:31,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,382 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-20 10:51:31,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:31,383 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:31,383 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:51:31,383 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 10:51:31,392 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2#L19-2true [2022-11-20 10:51:31,393 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 6#L21-2true assume !(main_~x2~0#1 > 1); 4#L21-3true main_~x1~0#1 := 1 + main_~x1~0#1; 2#L19-2true [2022-11-20 10:51:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 10:51:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199598399] [2022-11-20 10:51:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:31,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,537 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-11-20 10:51:31,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592170617] [2022-11-20 10:51:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592170617] [2022-11-20 10:51:31,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592170617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:31,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:31,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:51:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647420659] [2022-11-20 10:51:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:31,678 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:51:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:31,727 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:31,743 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-11-20 10:51:31,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2022-11-20 10:51:31,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 10:51:31,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2022-11-20 10:51:31,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-20 10:51:31,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-20 10:51:31,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2022-11-20 10:51:31,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:31,751 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-20 10:51:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2022-11-20 10:51:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-20 10:51:31,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 10:51:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2022-11-20 10:51:31,796 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-20 10:51:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:31,805 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-11-20 10:51:31,805 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 10:51:31,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2022-11-20 10:51:31,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 10:51:31,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:31,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:31,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:51:31,809 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 10:51:31,809 INFO L748 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L19-2 [2022-11-20 10:51:31,809 INFO L750 eck$LassoCheckResult]: Loop: 28#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 29#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 33#L21-2 assume !(main_~x2~0#1 > 1); 30#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 28#L19-2 [2022-11-20 10:51:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-20 10:51:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607014826] [2022-11-20 10:51:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2022-11-20 10:51:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895741502] [2022-11-20 10:51:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:31,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895741502] [2022-11-20 10:51:31,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895741502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:31,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186260185] [2022-11-20 10:51:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:31,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:51:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:51:31,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:32,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:32,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186260185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:51:32,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:51:32,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-20 10:51:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880317006] [2022-11-20 10:51:32,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:32,128 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:51:32,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:32,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:32,129 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 10:51:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:32,148 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-20 10:51:32,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-20 10:51:32,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 10:51:32,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2022-11-20 10:51:32,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-20 10:51:32,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-20 10:51:32,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2022-11-20 10:51:32,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:32,157 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-20 10:51:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2022-11-20 10:51:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-20 10:51:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-20 10:51:32,170 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-20 10:51:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:51:32,172 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-20 10:51:32,172 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 10:51:32,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2022-11-20 10:51:32,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-20 10:51:32,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:32,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:32,173 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:51:32,173 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2022-11-20 10:51:32,174 INFO L748 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 70#L19-2 [2022-11-20 10:51:32,174 INFO L750 eck$LassoCheckResult]: Loop: 70#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 71#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 75#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 78#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 77#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 76#L21-2 assume !(main_~x2~0#1 > 1); 72#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 70#L19-2 [2022-11-20 10:51:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-20 10:51:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022965836] [2022-11-20 10:51:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash -787882000, now seen corresponding path program 2 times [2022-11-20 10:51:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845675701] [2022-11-20 10:51:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845675701] [2022-11-20 10:51:32,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845675701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866141490] [2022-11-20 10:51:32,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:51:32,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:32,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:32,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:32,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:51:32,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:51:32,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:51:32,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:51:32,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:32,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:32,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866141490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:51:32,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:51:32,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-20 10:51:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091863523] [2022-11-20 10:51:32,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:32,545 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 10:51:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:51:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:51:32,548 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 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 10:51:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:32,593 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-20 10:51:32,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2022-11-20 10:51:32,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 10:51:32,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2022-11-20 10:51:32,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-20 10:51:32,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-11-20 10:51:32,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2022-11-20 10:51:32,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:32,599 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 10:51:32,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2022-11-20 10:51:32,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 10:51:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-20 10:51:32,604 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 10:51:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:32,607 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 10:51:32,607 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 10:51:32,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 15 transitions. [2022-11-20 10:51:32,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-20 10:51:32,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:32,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:32,612 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 10:51:32,612 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2022-11-20 10:51:32,612 INFO L748 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 143#L19-2 [2022-11-20 10:51:32,613 INFO L750 eck$LassoCheckResult]: Loop: 143#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 144#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 148#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 156#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 155#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 154#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 153#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 152#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 151#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 150#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 149#L21-2 assume !(main_~x2~0#1 > 1); 145#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 143#L19-2 [2022-11-20 10:51:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-11-20 10:51:32,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138301978] [2022-11-20 10:51:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash -219093776, now seen corresponding path program 3 times [2022-11-20 10:51:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774484008] [2022-11-20 10:51:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash 995055026, now seen corresponding path program 1 times [2022-11-20 10:51:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:32,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845281090] [2022-11-20 10:51:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:32,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:32,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:32,891 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:32,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:32,892 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:32,892 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:32,893 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:51:32,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:32,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:32,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:32,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2022-11-20 10:51:32,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:32,894 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:32,911 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:32,923 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:32,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:32,934 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:32,994 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:32,995 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:51:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:32,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 10:51:33,033 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:33,034 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:33,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-11-20 10:51:33,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 10:51:33,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:33,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:33,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 10:51:33,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:33,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x2~0#1=1} Honda state: {ULTIMATE.start_main_~x2~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:33,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 10:51:33,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:51:33,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 10:51:33,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:51:33,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,258 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:33,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:33,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:33,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:33,259 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:51:33,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:33,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:33,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2022-11-20 10:51:33,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:33,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:33,261 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,274 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:33,356 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:51:33,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:33,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:33,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:33,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:33,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:33,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 10:51:33,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:51:33,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:51:33,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:51:33,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 10:51:33,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:33,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:33,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:33,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:33,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:33,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:51:33,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:51:33,446 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:51:33,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-20 10:51:33,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:33,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:33,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:51:33,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:33,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:33,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:33,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:51:33,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:51:33,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 10:51:33,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:51:33,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,519 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:33,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-20 10:51:33,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:33,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:51:33,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:33,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:33,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:33,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:51:33,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:51:33,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:51:33,567 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:51:33,567 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 10:51:33,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,585 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,596 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:51:33,596 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:51:33,596 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:51:33,597 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0#1) = -2*ULTIMATE.start_main_~x1~0#1 + 21 Supporting invariants [] [2022-11-20 10:51:33,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 10:51:33,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,609 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:51:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:33,637 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:51:33,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:33,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:51:33,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 10:51:33,748 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-20 10:51:33,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,779 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 26 states and 29 transitions. Complement of second has 4 states. [2022-11-20 10:51:33,780 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 10:51:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 10:51:33,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 12 letters. [2022-11-20 10:51:33,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:33,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 12 letters. [2022-11-20 10:51:33,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:33,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 24 letters. [2022-11-20 10:51:33,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:33,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2022-11-20 10:51:33,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 10:51:33,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 28 transitions. [2022-11-20 10:51:33,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-20 10:51:33,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-20 10:51:33,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2022-11-20 10:51:33,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:51:33,787 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-20 10:51:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2022-11-20 10:51:33,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-11-20 10:51:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-20 10:51:33,791 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-20 10:51:33,791 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-20 10:51:33,791 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 10:51:33,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2022-11-20 10:51:33,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 10:51:33,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:33,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:33,793 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 10:51:33,793 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 10:51:33,793 INFO L748 eck$LassoCheckResult]: Stem: 249#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 250#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 244#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 246#L21-2 [2022-11-20 10:51:33,793 INFO L750 eck$LassoCheckResult]: Loop: 246#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 246#L21-2 [2022-11-20 10:51:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-20 10:51:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:33,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562666686] [2022-11-20 10:51:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-11-20 10:51:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901908751] [2022-11-20 10:51:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-11-20 10:51:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:33,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018997009] [2022-11-20 10:51:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:33,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:33,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:33,878 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:33,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:33,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:33,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:33,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:51:33,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:33,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:33,879 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2022-11-20 10:51:33,879 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:33,879 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:33,880 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,884 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:33,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:33,928 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:51:33,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,931 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:33,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 10:51:33,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:33,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:33,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:33,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:33,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:33,978 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:33,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:33,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 10:51:34,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:34,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:34,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:34,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 10:51:34,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 10:51:34,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:51:34,065 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,100 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:51:34,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,109 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:34,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:34,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:34,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:34,110 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:51:34,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:34,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:34,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2022-11-20 10:51:34,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:34,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:34,111 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 10:51:34,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,122 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:34,168 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:51:34,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,169 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:34,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:34,193 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:34,193 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:34,193 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:34,196 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-20 10:51:34,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-20 10:51:34,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 10:51:34,208 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 10:51:34,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,213 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 10:51:34,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:34,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:51:34,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:34,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:34,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:34,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:51:34,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:51:34,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:51:34,246 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:51:34,247 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:51:34,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,251 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:51:34,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:51:34,264 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:51:34,265 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2022-11-20 10:51:34,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 10:51:34,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,275 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:51:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,306 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,308 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-20 10:51:34,308 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 37 transitions. Complement of second has 5 states. [2022-11-20 10:51:34,320 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 10:51:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 10:51:34,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-11-20 10:51:34,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-11-20 10:51:34,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-11-20 10:51:34,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2022-11-20 10:51:34,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 10:51:34,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 28 states and 32 transitions. [2022-11-20 10:51:34,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-20 10:51:34,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-11-20 10:51:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2022-11-20 10:51:34,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 10:51:34,325 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 10:51:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2022-11-20 10:51:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2022-11-20 10:51:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-20 10:51:34,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-20 10:51:34,328 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-20 10:51:34,328 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 10:51:34,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2022-11-20 10:51:34,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-20 10:51:34,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 10:51:34,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 10:51:34,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1, 1] [2022-11-20 10:51:34,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-20 10:51:34,330 INFO L748 eck$LassoCheckResult]: Stem: 328#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 329#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 323#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 324#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 330#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 338#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 337#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 336#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 335#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 334#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 333#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 332#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 331#L21-2 assume !(main_~x2~0#1 > 1); 327#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 325#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 326#L21-2 [2022-11-20 10:51:34,330 INFO L750 eck$LassoCheckResult]: Loop: 326#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 326#L21-2 [2022-11-20 10:51:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash 781934745, now seen corresponding path program 2 times [2022-11-20 10:51:34,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078295386] [2022-11-20 10:51:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:34,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-11-20 10:51:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:34,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525166096] [2022-11-20 10:51:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1529826661, now seen corresponding path program 3 times [2022-11-20 10:51:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643170034] [2022-11-20 10:51:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:34,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:34,384 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:34,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:34,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:34,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:34,385 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 10:51:34,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:34,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:34,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2022-11-20 10:51:34,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:34,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:34,386 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,389 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,395 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:34,434 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 10:51:34,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,435 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:34,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-20 10:51:34,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 10:51:34,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 10:51:34,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,481 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 10:51:34,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 10:51:34,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,523 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 10:51:34,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 10:51:34,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 10:51:34,570 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 10:51:34,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,579 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 10:51:34,579 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 10:51:34,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 10:51:34,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 10:51:34,579 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 10:51:34,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 10:51:34,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 10:51:34,579 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2022-11-20 10:51:34,579 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 10:51:34,579 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 10:51:34,580 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,592 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 10:51:34,629 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 10:51:34,630 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 10:51:34,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,631 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 10:51:34,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 10:51:34,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 10:51:34,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 10:51:34,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 10:51:34,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 10:51:34,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 10:51:34,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 10:51:34,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 10:51:34,666 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 10:51:34,676 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 10:51:34,676 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 10:51:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 10:51:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,682 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,684 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 10:51:34,684 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 10:51:34,684 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 10:51:34,684 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2022-11-20 10:51:34,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 10:51:34,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:34,694 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 10:51:34,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,760 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,761 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-20 10:51:34,762 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,776 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 34 transitions. Complement of second has 5 states. [2022-11-20 10:51:34,778 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 10:51:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 10:51:34,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2022-11-20 10:51:34,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,780 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:51:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,864 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,866 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-20 10:51:34,866 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,878 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 34 transitions. Complement of second has 5 states. [2022-11-20 10:51:34,879 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 10:51:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-20 10:51:34,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2022-11-20 10:51:34,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,883 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 10:51:34,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,961 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,963 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 1 loop predicates [2022-11-20 10:51:34,963 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,978 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 21 transitions. Complement of second has 4 states. [2022-11-20 10:51:34,978 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 10:51:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10:51:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-11-20 10:51:34,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 1 letters. [2022-11-20 10:51:34,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 1 letters. [2022-11-20 10:51:34,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 2 letters. [2022-11-20 10:51:34,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 10:51:34,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2022-11-20 10:51:34,988 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:51:34,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2022-11-20 10:51:34,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 10:51:34,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 10:51:34,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 10:51:34,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:34,990 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:51:34,990 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:51:34,991 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:51:34,991 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-20 10:51:34,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:51:34,991 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 10:51:34,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 10:51:34,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:51:34 BoogieIcfgContainer [2022-11-20 10:51:34,998 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 10:51:34,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:51:34,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:51:34,999 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:51:34,999 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:31" (3/4) ... [2022-11-20 10:51:35,002 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:51:35,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:51:35,003 INFO L158 Benchmark]: Toolchain (without parser) took 4281.81ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.8MB in the beginning and 102.6MB in the end (delta: 8.2MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2022-11-20 10:51:35,003 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 155.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:51:35,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.73ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 101.7MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:51:35,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.96ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 100.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:51:35,004 INFO L158 Benchmark]: Boogie Preprocessor took 21.62ms. Allocated memory is still 155.2MB. Free memory was 100.3MB in the beginning and 99.3MB in the end (delta: 934.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:51:35,004 INFO L158 Benchmark]: RCFGBuilder took 272.58ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 90.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 10:51:35,004 INFO L158 Benchmark]: BuchiAutomizer took 3764.45ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 90.6MB in the beginning and 102.6MB in the end (delta: -11.9MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-11-20 10:51:35,005 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 186.6MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:51:35,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 155.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.73ms. Allocated memory is still 155.2MB. Free memory was 110.5MB in the beginning and 101.7MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.96ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 100.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.62ms. Allocated memory is still 155.2MB. Free memory was 100.3MB in the beginning and 99.3MB in the end (delta: 934.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.58ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 90.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3764.45ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 90.6MB in the beginning and 102.6MB in the end (delta: -11.9MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 186.6MB. Free memory is still 102.6MB. 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x1 + 21 and consists of 3 locations. One deterministic module has affine ranking function x2 and consists of 3 locations. One nondeterministic module has affine ranking function x2 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 7 iterations. TraceHistogramMax:9. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 46 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 10:51:35,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:35,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-11-20 10:51:35,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:35,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:35,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b173069-1a75-49f5-938e-cad5a76cd6fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE