./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/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_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC --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 31d0c4253184c01eb9f9573658b07bed7aa94585 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:33:21,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:33:21,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:33:21,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:33:21,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:33:21,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:33:21,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:33:21,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:33:21,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:33:21,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:33:21,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:33:21,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:33:21,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:33:21,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:33:21,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:33:21,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:33:21,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:33:21,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:33:21,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:33:21,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:33:21,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:33:21,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:33:21,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:33:21,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:33:21,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:33:21,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:33:21,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:33:21,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:33:21,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:33:21,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:33:21,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:33:21,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:33:21,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:33:21,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:33:21,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:33:21,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:33:21,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:33:21,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:33:21,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:33:21,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:33:21,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:33:21,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-11 00:33:21,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:33:21,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:33:21,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:33:21,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:33:21,209 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:33:21,209 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:33:21,209 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:33:21,209 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:33:21,210 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:33:21,210 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:33:21,210 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:33:21,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:33:21,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:33:21,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:33:21,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:33:21,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:33:21,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:33:21,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:33:21,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:33:21,212 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:33:21,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:33:21,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:33:21,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:33:21,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:33:21,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:33:21,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:33:21,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:33:21,215 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:33:21,215 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_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2021-10-11 00:33:21,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:33:21,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:33:21,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:33:21,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:33:21,520 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:33:21,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2021-10-11 00:33:21,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/data/35f84c186/8a8fc84356f74721a811b7c58d4a17bd/FLAGcb829d367 [2021-10-11 00:33:22,137 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:33:22,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2021-10-11 00:33:22,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/data/35f84c186/8a8fc84356f74721a811b7c58d4a17bd/FLAGcb829d367 [2021-10-11 00:33:22,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/data/35f84c186/8a8fc84356f74721a811b7c58d4a17bd [2021-10-11 00:33:22,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:33:22,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:33:22,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:33:22,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:33:22,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:33:22,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11696b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22, skipping insertion in model container [2021-10-11 00:33:22,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:33:22,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:33:22,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:33:22,715 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:33:22,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:33:22,740 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:33:22,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22 WrapperNode [2021-10-11 00:33:22,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:33:22,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:33:22,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:33:22,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:33:22,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:33:22,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:33:22,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:33:22,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:33:22,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... [2021-10-11 00:33:22,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:33:22,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:33:22,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:33:22,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:33:22,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:33:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:33:22,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:33:22,993 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:33:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:22 BoogieIcfgContainer [2021-10-11 00:33:22,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:33:22,996 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:33:22,996 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:33:23,000 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:33:23,001 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:33:23,001 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:33:22" (1/3) ... [2021-10-11 00:33:23,002 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7582fe5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:33:23, skipping insertion in model container [2021-10-11 00:33:23,003 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:33:23,003 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:33:22" (2/3) ... [2021-10-11 00:33:23,003 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7582fe5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:33:23, skipping insertion in model container [2021-10-11 00:33:23,004 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:33:23,004 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:22" (3/3) ... [2021-10-11 00:33:23,005 INFO L389 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2021-10-11 00:33:23,052 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:33:23,052 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:33:23,052 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:33:23,052 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:33:23,052 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:33:23,053 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:33:23,053 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:33:23,053 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:33:23,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2021-10-11 00:33:23,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:33:23,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:23,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:23,089 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:23,090 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:33:23,090 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:33:23,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2021-10-11 00:33:23,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:33:23,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:23,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:23,092 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:23,092 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:33:23,099 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2021-10-11 00:33:23,100 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 9#L21-2true assume !(main_~x2~0 > 1); 8#L21-3true main_~x1~0 := 1 + main_~x1~0; 6#L19-2true [2021-10-11 00:33:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-11 00:33:23,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315659963] [2021-10-11 00:33:23,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,214 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,216 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-10-11 00:33:23,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651159790] [2021-10-11 00:33:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651159790] [2021-10-11 00:33:23,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:33:23,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:33:23,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229703286] [2021-10-11 00:33:23,284 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:23,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:23,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:33:23,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:33:23,306 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2021-10-11 00:33:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:23,333 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-11 00:33:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:33:23,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-11 00:33:23,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:33:23,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-10-11 00:33:23,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-11 00:33:23,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-11 00:33:23,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-10-11 00:33:23,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:23,348 INFO L692 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-11 00:33:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-10-11 00:33:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-10-11 00:33:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-11 00:33:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-10-11 00:33:23,378 INFO L715 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-11 00:33:23,379 INFO L595 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-11 00:33:23,379 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:33:23,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-10-11 00:33:23,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-11 00:33:23,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:23,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:23,381 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:23,382 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-11 00:33:23,383 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 27#L19-2 [2021-10-11 00:33:23,383 INFO L796 eck$LassoCheckResult]: Loop: 27#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 28#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 30#L21-2 assume !(main_~x2~0 > 1); 29#L21-3 main_~x1~0 := 1 + main_~x1~0; 27#L19-2 [2021-10-11 00:33:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-11 00:33:23,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468400481] [2021-10-11 00:33:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2021-10-11 00:33:23,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506672857] [2021-10-11 00:33:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506672857] [2021-10-11 00:33:23,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500010635] [2021-10-11 00:33:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:23,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:33:23,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:23,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:33:23,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330733470] [2021-10-11 00:33:23,636 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:23,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:23,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:33:23,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:33:23,638 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2021-10-11 00:33:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:23,657 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2021-10-11 00:33:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:33:23,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2021-10-11 00:33:23,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-11 00:33:23,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2021-10-11 00:33:23,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-11 00:33:23,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-11 00:33:23,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2021-10-11 00:33:23,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:23,661 INFO L692 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-11 00:33:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2021-10-11 00:33:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 00:33:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 00:33:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-11 00:33:23,663 INFO L715 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-11 00:33:23,664 INFO L595 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-11 00:33:23,664 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:33:23,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-11 00:33:23,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-11 00:33:23,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:23,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:23,685 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:23,685 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2021-10-11 00:33:23,686 INFO L794 eck$LassoCheckResult]: Stem: 53#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 54#L19-2 [2021-10-11 00:33:23,686 INFO L796 eck$LassoCheckResult]: Loop: 54#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 55#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 57#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 58#L21-2 assume !(main_~x2~0 > 1); 56#L21-3 main_~x1~0 := 1 + main_~x1~0; 54#L19-2 [2021-10-11 00:33:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-11 00:33:23,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244004637] [2021-10-11 00:33:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,720 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,722 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2021-10-11 00:33:23,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539201912] [2021-10-11 00:33:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539201912] [2021-10-11 00:33:23,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416779265] [2021-10-11 00:33:23,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:23,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:33:23,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:23,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:23,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-11 00:33:23,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133810784] [2021-10-11 00:33:23,854 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:23,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:33:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:33:23,858 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2021-10-11 00:33:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:23,888 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2021-10-11 00:33:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:33:23,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2021-10-11 00:33:23,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-11 00:33:23,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2021-10-11 00:33:23,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-11 00:33:23,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-11 00:33:23,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-11 00:33:23,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:23,895 INFO L692 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-11 00:33:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-11 00:33:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 00:33:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 00:33:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-11 00:33:23,897 INFO L715 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-11 00:33:23,897 INFO L595 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-11 00:33:23,898 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:33:23,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-10-11 00:33:23,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-11 00:33:23,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:23,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:23,902 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:23,902 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2021-10-11 00:33:23,903 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L19-2 [2021-10-11 00:33:23,903 INFO L796 eck$LassoCheckResult]: Loop: 87#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 88#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 90#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 92#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 91#L21-2 assume !(main_~x2~0 > 1); 89#L21-3 main_~x1~0 := 1 + main_~x1~0; 87#L19-2 [2021-10-11 00:33:23,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-10-11 00:33:23,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576417138] [2021-10-11 00:33:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:23,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:23,922 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:23,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:23,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2021-10-11 00:33:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:23,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859161860] [2021-10-11 00:33:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:23,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859161860] [2021-10-11 00:33:23,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749838412] [2021-10-11 00:33:23,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:24,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 00:33:24,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:33:24,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:24,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:33:24,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435933643] [2021-10-11 00:33:24,103 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:24,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:24,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:33:24,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:33:24,104 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 6 states. [2021-10-11 00:33:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:24,136 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-11 00:33:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:33:24,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-11 00:33:24,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-11 00:33:24,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2021-10-11 00:33:24,144 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-11 00:33:24,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-11 00:33:24,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-11 00:33:24,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:24,145 INFO L692 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 00:33:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-11 00:33:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 00:33:24,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 00:33:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-11 00:33:24,148 INFO L715 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 00:33:24,148 INFO L595 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-11 00:33:24,148 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:33:24,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-10-11 00:33:24,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-11 00:33:24,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:24,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:24,150 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:24,155 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2021-10-11 00:33:24,155 INFO L794 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 126#L19-2 [2021-10-11 00:33:24,155 INFO L796 eck$LassoCheckResult]: Loop: 126#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 127#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 129#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 132#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 131#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 130#L21-2 assume !(main_~x2~0 > 1); 128#L21-3 main_~x1~0 := 1 + main_~x1~0; 126#L19-2 [2021-10-11 00:33:24,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2021-10-11 00:33:24,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246381010] [2021-10-11 00:33:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,164 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2021-10-11 00:33:24,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178791365] [2021-10-11 00:33:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178791365] [2021-10-11 00:33:24,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093715728] [2021-10-11 00:33:24,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:33:24,312 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:33:24,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:24,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:33:24,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:24,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:33:24,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262815814] [2021-10-11 00:33:24,389 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:24,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:24,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:33:24,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:33:24,390 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 7 states. [2021-10-11 00:33:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:24,412 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-11 00:33:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:33:24,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-11 00:33:24,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-11 00:33:24,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 00:33:24,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-11 00:33:24,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-11 00:33:24,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-10-11 00:33:24,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:24,415 INFO L692 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:33:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-10-11 00:33:24,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 00:33:24,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 00:33:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 00:33:24,417 INFO L715 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:33:24,417 INFO L595 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 00:33:24,417 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-11 00:33:24,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-10-11 00:33:24,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-11 00:33:24,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:24,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:24,419 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:24,419 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2021-10-11 00:33:24,419 INFO L794 eck$LassoCheckResult]: Stem: 170#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 171#L19-2 [2021-10-11 00:33:24,419 INFO L796 eck$LassoCheckResult]: Loop: 171#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 172#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 174#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 178#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 177#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 176#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 175#L21-2 assume !(main_~x2~0 > 1); 173#L21-3 main_~x1~0 := 1 + main_~x1~0; 171#L19-2 [2021-10-11 00:33:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2021-10-11 00:33:24,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896525968] [2021-10-11 00:33:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2021-10-11 00:33:24,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270333740] [2021-10-11 00:33:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270333740] [2021-10-11 00:33:24,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952987188] [2021-10-11 00:33:24,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:33:24,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-11 00:33:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:33:24,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:24,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:33:24,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075089926] [2021-10-11 00:33:24,626 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:24,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:24,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:33:24,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:33:24,627 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 8 states. [2021-10-11 00:33:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:24,648 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-11 00:33:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:33:24,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-10-11 00:33:24,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-11 00:33:24,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 00:33:24,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-11 00:33:24,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-11 00:33:24,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-10-11 00:33:24,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:24,650 INFO L692 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:33:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-10-11 00:33:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 00:33:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 00:33:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 00:33:24,652 INFO L715 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:33:24,652 INFO L595 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 00:33:24,652 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-11 00:33:24,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-11 00:33:24,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-11 00:33:24,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:24,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:24,653 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:24,653 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2021-10-11 00:33:24,654 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 222#L19-2 [2021-10-11 00:33:24,654 INFO L796 eck$LassoCheckResult]: Loop: 222#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 223#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 225#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 230#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 229#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 228#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 227#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 226#L21-2 assume !(main_~x2~0 > 1); 224#L21-3 main_~x1~0 := 1 + main_~x1~0; 222#L19-2 [2021-10-11 00:33:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2021-10-11 00:33:24,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645635884] [2021-10-11 00:33:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,663 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2021-10-11 00:33:24,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117554835] [2021-10-11 00:33:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117554835] [2021-10-11 00:33:24,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898368968] [2021-10-11 00:33:24,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:33:24,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-11 00:33:24,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:24,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:33:24,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:24,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:33:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582084004] [2021-10-11 00:33:24,804 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:24,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:24,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:33:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:33:24,805 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 9 states. [2021-10-11 00:33:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:24,827 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-11 00:33:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:33:24,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-10-11 00:33:24,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-11 00:33:24,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 00:33:24,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-11 00:33:24,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-11 00:33:24,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2021-10-11 00:33:24,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:24,829 INFO L692 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:33:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2021-10-11 00:33:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:33:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:33:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 00:33:24,831 INFO L715 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:33:24,831 INFO L595 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 00:33:24,831 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-11 00:33:24,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-10-11 00:33:24,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-11 00:33:24,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:24,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:24,832 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:24,832 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2021-10-11 00:33:24,832 INFO L794 eck$LassoCheckResult]: Stem: 278#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 279#L19-2 [2021-10-11 00:33:24,832 INFO L796 eck$LassoCheckResult]: Loop: 279#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 280#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 282#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 288#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 287#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 286#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 285#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 284#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 283#L21-2 assume !(main_~x2~0 > 1); 281#L21-3 main_~x1~0 := 1 + main_~x1~0; 279#L19-2 [2021-10-11 00:33:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,833 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2021-10-11 00:33:24,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850596828] [2021-10-11 00:33:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:24,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:24,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2021-10-11 00:33:24,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:24,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708682734] [2021-10-11 00:33:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:24,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708682734] [2021-10-11 00:33:24,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57346752] [2021-10-11 00:33:24,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:33:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:24,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:33:24,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:25,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:25,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:33:25,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551581232] [2021-10-11 00:33:25,013 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:25,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:33:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:33:25,014 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 10 states. [2021-10-11 00:33:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:25,039 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-11 00:33:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:33:25,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2021-10-11 00:33:25,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-11 00:33:25,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2021-10-11 00:33:25,041 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-10-11 00:33:25,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-11 00:33:25,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2021-10-11 00:33:25,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:25,042 INFO L692 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 00:33:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2021-10-11 00:33:25,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 00:33:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:33:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-11 00:33:25,044 INFO L715 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 00:33:25,044 INFO L595 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 00:33:25,044 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-11 00:33:25,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2021-10-11 00:33:25,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-11 00:33:25,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:25,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:25,045 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:25,045 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2021-10-11 00:33:25,046 INFO L794 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 342#L19-2 [2021-10-11 00:33:25,046 INFO L796 eck$LassoCheckResult]: Loop: 342#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 343#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 345#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 352#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 351#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 350#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 349#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 348#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 347#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 346#L21-2 assume !(main_~x2~0 > 1); 344#L21-3 main_~x1~0 := 1 + main_~x1~0; 342#L19-2 [2021-10-11 00:33:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2021-10-11 00:33:25,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:25,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126757714] [2021-10-11 00:33:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,052 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2021-10-11 00:33:25,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:25,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181868716] [2021-10-11 00:33:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:25,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181868716] [2021-10-11 00:33:25,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652620816] [2021-10-11 00:33:25,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:33:25,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:33:25,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:33:25,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:33:25,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:33:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:25,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:33:25,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:33:25,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710793758] [2021-10-11 00:33:25,223 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:33:25,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:33:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:33:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:33:25,224 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 11 states. [2021-10-11 00:33:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:33:25,264 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-11 00:33:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:33:25,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-10-11 00:33:25,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-11 00:33:25,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 00:33:25,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-11 00:33:25,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-11 00:33:25,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-10-11 00:33:25,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:25,266 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:33:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-10-11 00:33:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 00:33:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:33:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 00:33:25,270 INFO L715 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:33:25,270 INFO L595 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 00:33:25,270 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-11 00:33:25,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-10-11 00:33:25,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-11 00:33:25,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:25,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:25,272 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-11 00:33:25,272 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2021-10-11 00:33:25,272 INFO L794 eck$LassoCheckResult]: Stem: 410#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 411#L19-2 [2021-10-11 00:33:25,272 INFO L796 eck$LassoCheckResult]: Loop: 411#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 412#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 414#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 422#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 421#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 420#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 419#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 418#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 417#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 416#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 415#L21-2 assume !(main_~x2~0 > 1); 413#L21-3 main_~x1~0 := 1 + main_~x1~0; 411#L19-2 [2021-10-11 00:33:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2021-10-11 00:33:25,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:25,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507227246] [2021-10-11 00:33:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,282 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:25,283 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2021-10-11 00:33:25,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:25,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414171018] [2021-10-11 00:33:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,325 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:25,327 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2021-10-11 00:33:25,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:25,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205800475] [2021-10-11 00:33:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:25,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:25,355 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:25,494 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:25,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:25,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:25,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:25,495 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:33:25,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:25,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:25,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration10_Loop [2021-10-11 00:33:25,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:25,496 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:25,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,601 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:25,602 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:25,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:25,616 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,625 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:33:25,625 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:25,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:33:25,676 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:33:25,676 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:25,712 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:33:25,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:33:25,801 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:33:25,803 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:25,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:25,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:25,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:25,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:33:25,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:25,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:25,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration10_Loop [2021-10-11 00:33:25,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:25,804 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:25,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:25,876 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:25,884 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:25,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:25,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:25,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:25,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:25,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:25,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:33:25,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:25,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:25,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:25,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:25,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:25,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:25,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:33:25,964 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:25,973 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:26,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:26,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:33:26,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:26,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:26,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:26,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:33:26,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:33:26,041 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:33:26,045 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:33:26,045 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,054 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:33:26,054 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:33:26,054 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:33:26,055 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0) = -2*ULTIMATE.start_main_~x1~0 + 21 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,090 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:33:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:26,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:33:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:26,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-11 00:33:26,206 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-11 00:33:26,207 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2021-10-11 00:33:26,233 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 25 states and 28 transitions. Complement of second has 4 states. [2021-10-11 00:33:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:33:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:33:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-11 00:33:26,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2021-10-11 00:33:26,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:26,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2021-10-11 00:33:26,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:26,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2021-10-11 00:33:26,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:26,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2021-10-11 00:33:26,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:33:26,239 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2021-10-11 00:33:26,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-11 00:33:26,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-11 00:33:26,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2021-10-11 00:33:26,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:33:26,239 INFO L692 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-11 00:33:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2021-10-11 00:33:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-10-11 00:33:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:33:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-11 00:33:26,241 INFO L715 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-11 00:33:26,241 INFO L595 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-11 00:33:26,241 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-11 00:33:26,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2021-10-11 00:33:26,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:33:26,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:26,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:26,242 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-11 00:33:26,242 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:33:26,243 INFO L794 eck$LassoCheckResult]: Stem: 507#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 508#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 510#L21-2 [2021-10-11 00:33:26,243 INFO L796 eck$LassoCheckResult]: Loop: 510#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 510#L21-2 [2021-10-11 00:33:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-11 00:33:26,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:26,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279689102] [2021-10-11 00:33:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,261 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-11 00:33:26,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:26,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080572787] [2021-10-11 00:33:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,277 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-10-11 00:33:26,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:26,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609983960] [2021-10-11 00:33:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:26,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:26,284 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:26,299 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:26,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:26,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:26,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:26,300 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:33:26,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:26,300 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:26,300 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration11_Loop [2021-10-11 00:33:26,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:26,301 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:26,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,364 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:26,365 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:26,373 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:33:26,386 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:26,427 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:33:26,441 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:26,489 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:33:26,548 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,609 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:33:26,611 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:26,611 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:26,611 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:26,611 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:26,611 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:33:26,612 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:26,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:26,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration11_Loop [2021-10-11 00:33:26,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:26,612 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:26,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:26,679 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:26,679 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,745 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:26,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:26,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:26,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:26,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:26,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:33:26,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:33:26,769 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,836 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:26,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:26,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:26,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:26,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:26,851 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:33:26,851 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-11 00:33:26,873 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:26,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:26,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:33:26,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:26,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:26,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:26,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:33:26,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:33:26,937 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,944 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-11 00:33:26,944 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:26,951 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:33:26,951 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:33:26,952 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:33:26,952 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:26,982 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:33:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,020 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:27,021 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:33:27,021 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 2 states. [2021-10-11 00:33:27,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2021-10-11 00:33:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:33:27,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:33:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-11 00:33:27,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-11 00:33:27,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-11 00:33:27,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-11 00:33:27,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2021-10-11 00:33:27,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:33:27,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2021-10-11 00:33:27,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-11 00:33:27,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-11 00:33:27,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2021-10-11 00:33:27,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-11 00:33:27,043 INFO L692 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-11 00:33:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2021-10-11 00:33:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2021-10-11 00:33:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:33:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 00:33:27,049 INFO L715 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 00:33:27,049 INFO L595 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 00:33:27,049 INFO L427 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-11 00:33:27,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-10-11 00:33:27,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-11 00:33:27,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:33:27,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:33:27,053 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2021-10-11 00:33:27,053 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-11 00:33:27,053 INFO L794 eck$LassoCheckResult]: Stem: 582#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 583#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 584#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 588#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 596#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 595#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 594#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 593#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 592#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 591#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 590#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 589#L21-2 assume !(main_~x2~0 > 1); 587#L21-3 main_~x1~0 := 1 + main_~x1~0; 585#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 586#L21-2 [2021-10-11 00:33:27,053 INFO L796 eck$LassoCheckResult]: Loop: 586#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 586#L21-2 [2021-10-11 00:33:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2021-10-11 00:33:27,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:27,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656789934] [2021-10-11 00:33:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,089 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-10-11 00:33:27,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:27,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753759925] [2021-10-11 00:33:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,094 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2021-10-11 00:33:27,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:33:27,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815570588] [2021-10-11 00:33:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:33:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,115 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:33:27,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:33:27,137 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:33:27,151 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:27,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:27,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:27,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:27,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:33:27,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,151 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:27,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:27,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration12_Loop [2021-10-11 00:33:27,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:27,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:27,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,208 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:27,208 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:27,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:27,216 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:33:27,233 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: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:27,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:33:27,270 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,322 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:33:27,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:33:27,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:33:27,354 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:33:27,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:33:27,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:33:27,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:33:27,354 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:33:27,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,355 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:33:27,355 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:33:27,355 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration12_Loop [2021-10-11 00:33:27,355 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:33:27,355 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:33:27,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:33:27,455 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:33:27,455 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:27,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:27,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:27,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:27,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:27,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:27,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-11 00:33:27,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,498 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:27,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:33:27,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:33:27,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:33:27,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:33:27,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:33:27,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:33:27,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:33:27,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,561 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:33:27,563 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-11 00:33:27,563 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b6aa33b-4945-4c27-b511-45f14053512e/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:33:27,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:33:27,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:33:27,567 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:33:27,567 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:33:27,598 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:33:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,644 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:27,646 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:33:27,646 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2021-10-11 00:33:27,655 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2021-10-11 00:33:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:33:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:33:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-11 00:33:27,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-11 00:33:27,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,657 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:33:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,701 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:27,702 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:33:27,702 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2021-10-11 00:33:27,711 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2021-10-11 00:33:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:33:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:33:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-11 00:33:27,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-11 00:33:27,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,713 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-11 00:33:27,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:33:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:33:27,753 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:33:27,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:33:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:33:27,754 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-11 00:33:27,754 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2021-10-11 00:33:27,763 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 18 states and 20 transitions. Complement of second has 4 states. [2021-10-11 00:33:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-11 00:33:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-11 00:33:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-11 00:33:27,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-11 00:33:27,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2021-10-11 00:33:27,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2021-10-11 00:33:27,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:33:27,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-11 00:33:27,767 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:33:27,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2021-10-11 00:33:27,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:33:27,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:33:27,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:33:27,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:33:27,768 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:33:27,768 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:33:27,768 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:33:27,768 INFO L427 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-11 00:33:27,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:33:27,768 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:33:27,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:33:27,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:33:27 BoogieIcfgContainer [2021-10-11 00:33:27,774 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:33:27,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:33:27,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:33:27,775 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:33:27,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:33:22" (3/4) ... [2021-10-11 00:33:27,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:33:27,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:33:27,780 INFO L168 Benchmark]: Toolchain (without parser) took 5259.20 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 81.2 MB in the beginning and 100.0 MB in the end (delta: -18.8 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:33:27,780 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 67.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:33:27,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.93 ms. Allocated memory is still 113.2 MB. Free memory was 80.9 MB in the beginning and 90.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:33:27,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.11 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 89.1 MB in the end (delta: 893.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:33:27,782 INFO L168 Benchmark]: Boogie Preprocessor took 19.82 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.9 MB in the end (delta: 767.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:33:27,782 INFO L168 Benchmark]: RCFGBuilder took 203.52 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 79.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:33:27,783 INFO L168 Benchmark]: BuchiAutomizer took 4778.10 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 79.1 MB in the beginning and 100.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:33:27,783 INFO L168 Benchmark]: Witness Printer took 4.14 ms. Allocated memory is still 163.6 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:33:27,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 68.0 MB in the beginning and 67.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.93 ms. Allocated memory is still 113.2 MB. Free memory was 80.9 MB in the beginning and 90.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.11 ms. Allocated memory is still 113.2 MB. Free memory was 90.0 MB in the beginning and 89.1 MB in the end (delta: 893.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.82 ms. Allocated memory is still 113.2 MB. Free memory was 88.7 MB in the beginning and 87.9 MB in the end (delta: 767.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 203.52 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 79.5 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4778.10 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 79.1 MB in the beginning and 100.1 MB in the end (delta: -21.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.14 ms. Allocated memory is still 163.6 MB. Free memory was 100.1 MB in the beginning and 100.0 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 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. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 3.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 21 SDslu, 50 SDs, 0 SdLazy, 157 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax204 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...