./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/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_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 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-2329fc7 [2022-12-13 19:26:04,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:26:04,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:26:04,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:26:04,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:26:04,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:26:04,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:26:04,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:26:04,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:26:04,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:26:04,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:26:04,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:26:04,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:26:04,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:26:04,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:26:04,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:26:04,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:26:04,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:26:04,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:26:04,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:26:04,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:26:04,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:26:04,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:26:04,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:26:04,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:26:04,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:26:04,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:26:04,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:26:04,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:26:04,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:26:04,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:26:04,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:26:04,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:26:04,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:26:04,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:26:04,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:26:04,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:26:04,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:26:04,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:26:04,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:26:04,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:26:04,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 19:26:04,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:26:04,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:26:04,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:26:04,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:26:04,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:26:04,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:26:04,080 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:26:04,080 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 19:26:04,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:26:04,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:26:04,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 19:26:04,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:26:04,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:26:04,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:26:04,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:26:04,084 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 19:26:04,084 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_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2022-12-13 19:26:04,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:26:04,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:26:04,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:26:04,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:26:04,262 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:26:04,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-12-13 19:26:06,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:26:06,961 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:26:06,961 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2022-12-13 19:26:06,966 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/data/ef8a934be/f926c5ea24a14206a18d4110ffe4fe44/FLAGc375d4de1 [2022-12-13 19:26:06,976 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/data/ef8a934be/f926c5ea24a14206a18d4110ffe4fe44 [2022-12-13 19:26:06,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:26:06,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:26:06,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:26:06,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:26:06,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:26:06,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:26:06" (1/1) ... [2022-12-13 19:26:06,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ec0b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:06, skipping insertion in model container [2022-12-13 19:26:06,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:26:06" (1/1) ... [2022-12-13 19:26:06,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:26:06,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:26:07,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:26:07,100 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:26:07,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:26:07,118 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:26:07,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07 WrapperNode [2022-12-13 19:26:07,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:26:07,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:26:07,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:26:07,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:26:07,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,139 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 19:26:07,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:26:07,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:26:07,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:26:07,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:26:07,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,152 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:26:07,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:26:07,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:26:07,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:26:07,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (1/1) ... [2022-12-13 19:26:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:07,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:07,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 19:26:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:26:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:26:07,275 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:26:07,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:26:07,312 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:26:07,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:26:07,317 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:26:07,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:07 BoogieIcfgContainer [2022-12-13 19:26:07,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:26:07,319 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 19:26:07,319 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 19:26:07,322 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 19:26:07,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:26:07,323 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 07:26:06" (1/3) ... [2022-12-13 19:26:07,324 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@733c01b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:26:07, skipping insertion in model container [2022-12-13 19:26:07,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:26:07,324 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:26:07" (2/3) ... [2022-12-13 19:26:07,324 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@733c01b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:26:07, skipping insertion in model container [2022-12-13 19:26:07,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:26:07,324 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:07" (3/3) ... [2022-12-13 19:26:07,325 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2022-12-13 19:26:07,367 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 19:26:07,367 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 19:26:07,368 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 19:26:07,368 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 19:26:07,368 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 19:26:07,368 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 19:26:07,368 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 19:26:07,368 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 19:26:07,372 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) [2022-12-13 19:26:07,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 19:26:07,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:07,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:07,389 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:26:07,389 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 19:26:07,389 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 19:26:07,389 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) [2022-12-13 19:26:07,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-12-13 19:26:07,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:07,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:07,390 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:26:07,390 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-12-13 19:26:07,396 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2#L19-2true [2022-12-13 19:26:07,396 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 7#L21-2true assume !(main_~x2~0#1 > 1); 4#L21-3true main_~x1~0#1 := 1 + main_~x1~0#1; 2#L19-2true [2022-12-13 19:26:07,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 19:26:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467202173] [2022-12-13 19:26:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:07,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-12-13 19:26:07,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662075274] [2022-12-13 19:26:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:07,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662075274] [2022-12-13 19:26:07,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662075274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:26:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:26:07,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:26:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557189807] [2022-12-13 19:26:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:26:07,562 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:26:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:26:07,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:26:07,596 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) [2022-12-13 19:26:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:26:07,608 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-12-13 19:26:07,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2022-12-13 19:26:07,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 19:26:07,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2022-12-13 19:26:07,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-12-13 19:26:07,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-12-13 19:26:07,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2022-12-13 19:26:07,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:07,614 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-12-13 19:26:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2022-12-13 19:26:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-13 19:26:07,633 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) [2022-12-13 19:26:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2022-12-13 19:26:07,634 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-12-13 19:26:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:26:07,638 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2022-12-13 19:26:07,638 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 19:26:07,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2022-12-13 19:26:07,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-12-13 19:26:07,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:07,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:07,640 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:26:07,640 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:26:07,640 INFO L748 eck$LassoCheckResult]: Stem: 31#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L19-2 [2022-12-13 19:26:07,640 INFO L750 eck$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 [2022-12-13 19:26:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-12-13 19:26:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586428787] [2022-12-13 19:26:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2022-12-13 19:26:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76749942] [2022-12-13 19:26:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:07,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:07,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76749942] [2022-12-13 19:26:07,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76749942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:07,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962385779] [2022-12-13 19:26:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:07,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:07,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:26:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:26:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:07,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:07,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962385779] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:07,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:07,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 19:26:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931407707] [2022-12-13 19:26:07,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:07,791 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:26:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:26:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:26:07,792 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) [2022-12-13 19:26:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:26:07,810 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-12-13 19:26:07,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-12-13 19:26:07,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 19:26:07,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2022-12-13 19:26:07,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-12-13 19:26:07,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-12-13 19:26:07,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2022-12-13 19:26:07,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:07,812 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-13 19:26:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2022-12-13 19:26:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-13 19:26:07,813 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) [2022-12-13 19:26:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-13 19:26:07,814 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-13 19:26:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:26:07,815 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-13 19:26:07,815 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 19:26:07,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2022-12-13 19:26:07,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-12-13 19:26:07,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:07,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:07,816 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:26:07,817 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2022-12-13 19:26:07,817 INFO L748 eck$LassoCheckResult]: Stem: 73#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 70#L19-2 [2022-12-13 19:26:07,817 INFO L750 eck$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 [2022-12-13 19:26:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-12-13 19:26:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022498149] [2022-12-13 19:26:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:07,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash -787882000, now seen corresponding path program 2 times [2022-12-13 19:26:07,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:07,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334756764] [2022-12-13 19:26:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:26:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334756764] [2022-12-13 19:26:07,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334756764] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:26:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509054108] [2022-12-13 19:26:07,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:26:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:26:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:07,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:26:07,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:26:08,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:26:08,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:26:08,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:26:08,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:08,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:26:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509054108] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:26:08,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:26:08,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-12-13 19:26:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60853916] [2022-12-13 19:26:08,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:26:08,083 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:26:08,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:26:08,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:26:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:26:08,084 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) [2022-12-13 19:26:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:26:08,099 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-12-13 19:26:08,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2022-12-13 19:26:08,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 19:26:08,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2022-12-13 19:26:08,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-12-13 19:26:08,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2022-12-13 19:26:08,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2022-12-13 19:26:08,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:08,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-13 19:26:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2022-12-13 19:26:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-13 19:26:08,102 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) [2022-12-13 19:26:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-13 19:26:08,102 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-13 19:26:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:26:08,103 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-13 19:26:08,103 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 19:26:08,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 15 transitions. [2022-12-13 19:26:08,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 19:26:08,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:08,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:08,105 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 19:26:08,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2022-12-13 19:26:08,105 INFO L748 eck$LassoCheckResult]: Stem: 146#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 143#L19-2 [2022-12-13 19:26:08,105 INFO L750 eck$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 [2022-12-13 19:26:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-12-13 19:26:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168036292] [2022-12-13 19:26:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -219093776, now seen corresponding path program 3 times [2022-12-13 19:26:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471815266] [2022-12-13 19:26:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 995055026, now seen corresponding path program 1 times [2022-12-13 19:26:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853355431] [2022-12-13 19:26:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,235 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:08,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:08,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:08,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:08,236 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:26:08,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,236 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:08,236 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:08,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2022-12-13 19:26:08,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:08,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:08,248 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,255 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,307 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:08,307 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:26:08,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 19:26:08,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:08,335 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: [] [2022-12-13 19:26:08,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:08,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 19:26:08,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:08,361 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: [] [2022-12-13 19:26:08,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 19:26:08,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 19:26:08,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:08,381 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: [] [2022-12-13 19:26:08,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 19:26:08,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 19:26:08,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 19:26:08,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 19:26:08,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:26:08,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,426 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:26:08,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 19:26:08,430 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:08,430 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:08,430 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:08,430 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:08,430 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:26:08,430 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:08,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:08,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration4_Loop [2022-12-13 19:26:08,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:08,431 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:08,432 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,435 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,437 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,442 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,475 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:08,479 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:26:08,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 19:26:08,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,499 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 19:26:08,499 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 19:26:08,504 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:26:08,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 19:26:08,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 19:26:08,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,523 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 19:26:08,523 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 19:26:08,527 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:26:08,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 19:26:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 19:26:08,533 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:26:08,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:26:08,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:26:08,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:26:08,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 19:26:08,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,552 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 19:26:08,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:26:08,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:26:08,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:26:08,569 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:26:08,572 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:26:08,572 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 19:26:08,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 19:26:08,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:26:08,577 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:26:08,577 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:26:08,578 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 [] [2022-12-13 19:26:08,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 19:26:08,584 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:26:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:08,607 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:26:08,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:08,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:08,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 19:26:08,695 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 19:26:08,696 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) [2022-12-13 19:26:08,724 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. [2022-12-13 19:26:08,724 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 [2022-12-13 19:26:08,725 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) [2022-12-13 19:26:08,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 19:26:08,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 12 letters. [2022-12-13 19:26:08,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:08,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 12 letters. [2022-12-13 19:26:08,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:08,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 24 letters. [2022-12-13 19:26:08,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:08,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2022-12-13 19:26:08,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:26:08,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 28 transitions. [2022-12-13 19:26:08,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-12-13 19:26:08,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-12-13 19:26:08,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2022-12-13 19:26:08,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:26:08,730 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-13 19:26:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2022-12-13 19:26:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-12-13 19:26:08,732 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) [2022-12-13 19:26:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-12-13 19:26:08,732 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-13 19:26:08,732 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-13 19:26:08,732 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 19:26:08,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2022-12-13 19:26:08,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:26:08,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:08,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:08,733 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 19:26:08,733 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-12-13 19:26:08,734 INFO L748 eck$LassoCheckResult]: Stem: 249#$Ultimate##0 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 [2022-12-13 19:26:08,734 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 [2022-12-13 19:26:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-12-13 19:26:08,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843933471] [2022-12-13 19:26:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-12-13 19:26:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505841242] [2022-12-13 19:26:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-12-13 19:26:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:08,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659583961] [2022-12-13 19:26:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:08,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:08,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:08,763 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:08,763 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:08,763 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:08,763 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:08,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:26:08,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:08,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:08,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2022-12-13 19:26:08,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:08,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:08,764 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,769 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 19:26:08,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:08,804 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:26:08,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,806 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 19:26:08,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:08,827 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: [] [2022-12-13 19:26:08,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 19:26:08,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,831 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 19:26:08,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,853 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:08,853 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: [] [2022-12-13 19:26:08,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 19:26:08,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 19:26:08,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:08,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 19:26:08,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,875 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 19:26:08,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:26:08,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:08,899 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:26:08,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 19:26:08,903 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:08,903 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:08,903 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:08,903 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:08,903 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:26:08,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:08,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:08,904 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration5_Loop [2022-12-13 19:26:08,904 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:08,904 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:08,905 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,908 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,912 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:08,938 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:08,938 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:26:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,939 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 19:26:08,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,955 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-12-13 19:26:08,955 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-12-13 19:26:08,959 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:26:08,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,963 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 19:26:08,966 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:08,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:08,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:26:08,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:08,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:08,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:08,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:26:08,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:26:08,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:26:08,983 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:26:08,983 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:26:08,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:08,984 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:08,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 19:26:08,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:26:08,986 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:26:08,986 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:26:08,986 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 [] [2022-12-13 19:26:08,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 19:26:08,990 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:26:09,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:09,012 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 [2022-12-13 19:26:09,012 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) [2022-12-13 19:26:09,022 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. [2022-12-13 19:26:09,022 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 [2022-12-13 19:26:09,023 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) [2022-12-13 19:26:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 19:26:09,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2022-12-13 19:26:09,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2022-12-13 19:26:09,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-12-13 19:26:09,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 37 transitions. [2022-12-13 19:26:09,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:26:09,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 28 states and 32 transitions. [2022-12-13 19:26:09,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-12-13 19:26:09,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-12-13 19:26:09,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 32 transitions. [2022-12-13 19:26:09,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:26:09,026 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-13 19:26:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 32 transitions. [2022-12-13 19:26:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2022-12-13 19:26:09,027 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) [2022-12-13 19:26:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 19:26:09,028 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 19:26:09,028 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 19:26:09,028 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 19:26:09,028 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2022-12-13 19:26:09,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-12-13 19:26:09,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:26:09,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:26:09,029 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1, 1] [2022-12-13 19:26:09,029 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-12-13 19:26:09,030 INFO L748 eck$LassoCheckResult]: Stem: 328#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 329#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 323#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 324#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 330#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 338#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 337#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 336#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 335#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 334#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 333#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 332#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 331#L21-2 assume !(main_~x2~0#1 > 1); 327#L21-3 main_~x1~0#1 := 1 + main_~x1~0#1; 325#L19-2 assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10; 326#L21-2 [2022-12-13 19:26:09,030 INFO L750 eck$LassoCheckResult]: Loop: 326#L21-2 assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1; 326#L21-2 [2022-12-13 19:26:09,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 781934745, now seen corresponding path program 2 times [2022-12-13 19:26:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:09,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24962280] [2022-12-13 19:26:09,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:09,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,051 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-12-13 19:26:09,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:09,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875955551] [2022-12-13 19:26:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:09,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1529826661, now seen corresponding path program 3 times [2022-12-13 19:26:09,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:26:09,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387982112] [2022-12-13 19:26:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:26:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:26:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:26:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:26:09,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:26:09,081 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:09,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:09,081 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:09,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:09,082 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:26:09,082 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,082 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:09,082 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:09,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2022-12-13 19:26:09,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:09,082 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:09,083 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,114 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:09,114 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:26:09,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:09,115 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:09,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 19:26:09,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:09,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:09,136 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:26:09,137 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: [] [2022-12-13 19:26:09,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 19:26:09,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:09,142 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:09,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 19:26:09,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:26:09,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:09,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 19:26:09,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:09,159 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:09,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 19:26:09,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:26:09,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:26:09,183 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:26:09,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 19:26:09,186 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:26:09,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:26:09,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:26:09,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:26:09,186 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:26:09,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:26:09,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:26:09,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2022-12-13 19:26:09,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:26:09,187 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:26:09,188 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,193 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,195 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:26:09,221 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:26:09,221 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:26:09,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:09,223 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:09,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 19:26:09,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:26:09,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:26:09,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:26:09,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:26:09,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:26:09,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:26:09,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:26:09,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:26:09,238 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:26:09,241 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:26:09,241 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:26:09,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:26:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:26:09,243 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:26:09,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 19:26:09,245 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:26:09,245 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:26:09,245 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:26:09,245 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 [] [2022-12-13 19:26:09,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 19:26:09,250 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:26:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,291 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:09,292 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 [2022-12-13 19:26:09,292 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) [2022-12-13 19:26:09,303 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. [2022-12-13 19:26:09,304 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 [2022-12-13 19:26:09,305 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) [2022-12-13 19:26:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 19:26:09,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2022-12-13 19:26:09,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,306 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:26:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,346 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:09,348 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 [2022-12-13 19:26:09,348 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) [2022-12-13 19:26:09,355 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. [2022-12-13 19:26:09,355 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 [2022-12-13 19:26:09,356 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) [2022-12-13 19:26:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-12-13 19:26:09,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 15 letters. Loop has 1 letters. [2022-12-13 19:26:09,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,356 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:26:09,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:26:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:26:09,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:26:09,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:26:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:26:09,393 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 [2022-12-13 19:26:09,393 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) [2022-12-13 19:26:09,401 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. [2022-12-13 19:26:09,401 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 [2022-12-13 19:26:09,402 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) [2022-12-13 19:26:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-12-13 19:26:09,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 1 letters. [2022-12-13 19:26:09,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 1 letters. [2022-12-13 19:26:09,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 15 letters. Loop has 2 letters. [2022-12-13 19:26:09,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:26:09,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2022-12-13 19:26:09,405 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:26:09,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2022-12-13 19:26:09,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 19:26:09,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 19:26:09,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 19:26:09,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:09,405 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:26:09,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:26:09,405 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:26:09,406 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 19:26:09,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 19:26:09,406 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:26:09,406 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 19:26:09,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 07:26:09 BoogieIcfgContainer [2022-12-13 19:26:09,413 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 19:26:09,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:26:09,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:26:09,413 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:26:09,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:26:07" (3/4) ... [2022-12-13 19:26:09,416 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:26:09,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:26:09,417 INFO L158 Benchmark]: Toolchain (without parser) took 2437.39ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 110.9MB in the beginning and 104.7MB in the end (delta: 6.2MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2022-12-13 19:26:09,417 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 140.5MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:26:09,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.59ms. Allocated memory is still 140.5MB. Free memory was 110.9MB in the beginning and 101.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 19:26:09,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.12ms. Allocated memory is still 140.5MB. Free memory was 101.8MB in the beginning and 100.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:26:09,418 INFO L158 Benchmark]: Boogie Preprocessor took 13.34ms. Allocated memory is still 140.5MB. Free memory was 100.4MB in the beginning and 99.5MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:26:09,418 INFO L158 Benchmark]: RCFGBuilder took 165.06ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 91.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 19:26:09,419 INFO L158 Benchmark]: BuchiAutomizer took 2093.53ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 91.1MB in the beginning and 104.7MB in the end (delta: -13.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-12-13 19:26:09,419 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 182.5MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:26:09,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 140.5MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.59ms. Allocated memory is still 140.5MB. Free memory was 110.9MB in the beginning and 101.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.12ms. Allocated memory is still 140.5MB. Free memory was 101.8MB in the beginning and 100.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.34ms. Allocated memory is still 140.5MB. Free memory was 100.4MB in the beginning and 99.5MB in the end (delta: 971.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 165.06ms. Allocated memory is still 140.5MB. Free memory was 99.5MB in the beginning and 91.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2093.53ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 91.1MB in the beginning and 104.7MB in the end (delta: -13.6MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 182.5MB. Free memory is still 104.7MB. 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 2.0s and 7 iterations. TraceHistogramMax:9. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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, 0.0s 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: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 19:26:09,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:09,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-12-13 19:26:09,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:26:10,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-13 19:26:10,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9d10771-5ddf-446b-8cee-c9be28133041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE