./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD --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 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:12:41,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:12:41,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:12:42,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:12:42,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:12:42,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:12:42,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:12:42,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:12:42,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:12:42,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:12:42,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:12:42,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:12:42,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:12:42,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:12:42,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:12:42,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:12:42,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:12:42,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:12:42,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:12:42,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:12:42,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:12:42,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:12:42,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:12:42,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:12:42,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:12:42,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:12:42,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:12:42,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:12:42,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:12:42,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:12:42,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:12:42,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:12:42,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:12:42,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:12:42,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:12:42,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:12:42,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:12:42,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:12:42,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:12:42,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:12:42,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:12:42,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:12:42,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:12:42,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:12:42,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:12:42,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:12:42,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:12:42,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:12:42,202 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:12:42,203 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:12:42,203 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:12:42,203 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:12:42,205 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:12:42,205 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:12:42,205 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:12:42,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:12:42,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:12:42,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:12:42,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:12:42,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:12:42,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:12:42,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:12:42,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:12:42,208 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:12:42,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:12:42,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:12:42,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:12:42,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:12:42,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:12:42,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:12:42,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:12:42,213 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:12:42,214 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_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd [2021-10-28 23:12:42,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:12:42,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:12:42,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:12:42,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:12:42,576 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:12:42,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 23:12:42,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/data/e7ebaea2c/49c5832df85f413181af415cdf389800/FLAG9024deef8 [2021-10-28 23:12:43,156 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:12:43,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 23:12:43,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/data/e7ebaea2c/49c5832df85f413181af415cdf389800/FLAG9024deef8 [2021-10-28 23:12:43,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/data/e7ebaea2c/49c5832df85f413181af415cdf389800 [2021-10-28 23:12:43,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:12:43,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:12:43,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:43,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:12:43,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:12:43,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a29f766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43, skipping insertion in model container [2021-10-28 23:12:43,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:12:43,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:12:43,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:43,748 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:12:43,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:12:43,776 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:12:43,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43 WrapperNode [2021-10-28 23:12:43,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:12:43,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:43,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:12:43,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:12:43,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:12:43,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:12:43,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:12:43,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:12:43,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:12:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:12:43,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:12:43,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:12:43,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (1/1) ... [2021-10-28 23:12:43,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:43,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:43,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:12:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:12:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:12:44,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:12:44,138 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:12:44,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:44 BoogieIcfgContainer [2021-10-28 23:12:44,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:12:44,142 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:12:44,143 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:12:44,146 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:12:44,147 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:44,148 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:12:43" (1/3) ... [2021-10-28 23:12:44,149 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34e40bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:12:44, skipping insertion in model container [2021-10-28 23:12:44,150 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:44,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:12:43" (2/3) ... [2021-10-28 23:12:44,150 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34e40bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:12:44, skipping insertion in model container [2021-10-28 23:12:44,151 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:12:44,151 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:44" (3/3) ... [2021-10-28 23:12:44,152 INFO L389 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2021-10-28 23:12:44,224 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:12:44,224 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:12:44,224 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:12:44,224 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:12:44,224 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:12:44,224 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:12:44,225 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:12:44,225 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:12:44,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:44,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:44,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:44,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:44,268 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:12:44,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:12:44,268 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:12:44,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:44,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:44,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:44,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:44,270 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:12:44,271 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:12:44,278 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18-2true [2021-10-28 23:12:44,279 INFO L793 eck$LassoCheckResult]: Loop: 7#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 5#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 7#L18-2true [2021-10-28 23:12:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:12:44,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:44,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834802529] [2021-10-28 23:12:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:44,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,384 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,405 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:44,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-10-28 23:12:44,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:44,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044918682] [2021-10-28 23:12:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:44,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,422 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,429 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-10-28 23:12:44,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:44,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723392770] [2021-10-28 23:12:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:44,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,441 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:44,449 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:44,541 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:44,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:44,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:44,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:44,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:44,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:44,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:44,543 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:44,543 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2021-10-28 23:12:44,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:44,543 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:44,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:44,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:44,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:44,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:44,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:44,771 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:44,771 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:44,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:44,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:44,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:12:44,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:44,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:44,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:44,801 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: [] [2021-10-28 23:12:44,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-28 23:12:44,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:44,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:44,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:12:44,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:44,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:44,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:44,868 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: [] [2021-10-28 23:12:44,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:44,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:44,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:44,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:12:44,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:44,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:44,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:44,926 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:12:44,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:44,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:44,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:44,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:44,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:44,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:44,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:12:45,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-28 23:12:45,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:12:45,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:45,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:45,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:45,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-28 23:12:45,092 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:45,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:45,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:45,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:45,093 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:45,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:45,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:45,093 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2021-10-28 23:12:45,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:45,093 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:45,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:45,209 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:45,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:45,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:12:45,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:45,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:45,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:45,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:45,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:12:45,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:12:45,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:45,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:45,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,322 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:45,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:45,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:45,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:45,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:45,343 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:12:45,343 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:12:45,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:12:45,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:45,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:45,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:12:45,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:45,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:45,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:45,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:45,426 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:12:45,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:45,429 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:12:45,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:45,438 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:45,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:45,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:12:45,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:45,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:45,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:45,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:45,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:45,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:45,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:45,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:45,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:45,504 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 23:12:45,504 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:12:45,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,507 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:12:45,508 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:45,508 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:45,508 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:45,509 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-28 23:12:45,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:45,536 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:45,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:45,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:45,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:45,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:45,676 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 [2021-10-28 23:12:45,678 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:45,727 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 7 states. [2021-10-28 23:12:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 23:12:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2021-10-28 23:12:45,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2021-10-28 23:12:45,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:45,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-28 23:12:45,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:45,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-28 23:12:45,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:45,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-10-28 23:12:45,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:45,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-10-28 23:12:45,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 23:12:45,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 23:12:45,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-10-28 23:12:45,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:12:45,744 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:12:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-10-28 23:12:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-28 23:12:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-28 23:12:45,772 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 23:12:45,772 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-28 23:12:45,772 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:12:45,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-28 23:12:45,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:45,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:45,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:45,773 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:12:45,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:12:45,774 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 71#L18 [2021-10-28 23:12:45,774 INFO L793 eck$LassoCheckResult]: Loop: 71#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 71#L18 [2021-10-28 23:12:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-28 23:12:45,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:45,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68500656] [2021-10-28 23:12:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:45,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,781 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-10-28 23:12:45,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:45,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543598165] [2021-10-28 23:12:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:45,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,795 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2021-10-28 23:12:45,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:45,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776892240] [2021-10-28 23:12:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:45,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,816 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:45,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:45,885 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:45,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:45,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:45,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:45,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:45,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:45,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:45,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2021-10-28 23:12:45,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:45,886 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:45,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:45,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:45,960 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:45,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:45,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:45,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:45,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:12:46,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:46,024 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: [] [2021-10-28 23:12:46,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:46,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:46,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:12:46,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:46,103 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: [] [2021-10-28 23:12:46,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:46,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:46,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:12:46,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:12:46,165 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:12:46,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,188 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:12:46,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:46,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:46,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:12:46,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:46,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:46,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:46,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,356 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:46,356 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:46,356 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:46,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:46,356 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:46,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:46,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:46,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2021-10-28 23:12:46,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:46,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:46,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,456 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:46,456 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:46,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,459 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:46,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:46,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:46,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:46,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:46,485 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:12:46,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:12:46,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:12:46,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:46,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,551 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:46,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:46,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:46,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:46,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:46,581 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:12:46,581 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:12:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:12:46,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:46,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,640 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:46,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:46,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:46,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:46,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:46,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:46,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:46,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:46,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:12:46,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:12:46,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,716 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:12:46,723 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:46,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:46,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:46,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:46,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:46,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:46,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:46,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:46,743 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:46,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:12:46,771 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:12:46,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:46,779 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:46,785 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:46,786 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:46,786 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:46,786 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 23:12:46,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:12:46,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:46,822 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:46,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:46,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:46,855 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:46,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:46,893 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 [2021-10-28 23:12:46,894 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:46,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2021-10-28 23:12:46,913 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 [2021-10-28 23:12:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-10-28 23:12:46,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 23:12:46,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:46,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:12:46,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:46,915 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 23:12:46,915 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:46,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-10-28 23:12:46,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:46,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2021-10-28 23:12:46,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-28 23:12:46,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-28 23:12:46,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-10-28 23:12:46,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:12:46,917 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-10-28 23:12:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-10-28 23:12:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2021-10-28 23:12:46,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-10-28 23:12:46,919 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-28 23:12:46,919 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-28 23:12:46,919 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:12:46,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-10-28 23:12:46,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:12:46,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:12:46,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:12:46,920 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2021-10-28 23:12:46,920 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:12:46,920 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 128#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 125#L18 [2021-10-28 23:12:46,920 INFO L793 eck$LassoCheckResult]: Loop: 125#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 126#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 125#L18 [2021-10-28 23:12:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2021-10-28 23:12:46,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:46,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388375275] [2021-10-28 23:12:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:46,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,931 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:46,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2021-10-28 23:12:46,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:46,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950678100] [2021-10-28 23:12:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:46,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,947 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2021-10-28 23:12:46,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:12:46,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990498265] [2021-10-28 23:12:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:12:46,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:12:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,958 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:12:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:12:46,966 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:12:46,991 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:46,992 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:46,992 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:46,992 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:46,992 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:12:46,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:46,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:46,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:46,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2021-10-28 23:12:46,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:46,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:46,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:46,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,054 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:47,054 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:12:47,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:47,055 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:47,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 23:12:47,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:12:47,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:47,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:47,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:47,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:47,126 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:47,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:12:47,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:12:47,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 23:12:47,232 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:12:47,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:47,235 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:12:47,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:12:47,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:12:47,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:12:47,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:12:47,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:47,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:12:47,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:12:47,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2021-10-28 23:12:47,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:12:47,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:12:47,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:12:47,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:12:47,346 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:12:47,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:47,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:47,351 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:47,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:12:47,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:12:47,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:12:47,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:12:47,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:12:47,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:12:47,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:12:47,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:12:47,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 23:12:47,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:12:47,388 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:12:47,388 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:12:47,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:12:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:12:47,391 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:12:47,392 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:12:47,393 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:12:47,393 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:12:47,393 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-10-28 23:12:47,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 23:12:47,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-28 23:12:47,421 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:12:47,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,487 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:47,505 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 [2021-10-28 23:12:47,505 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2021-10-28 23:12:47,527 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 [2021-10-28 23:12:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-10-28 23:12:47,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:12:47,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:47,528 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:12:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,571 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:47,600 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:12:47,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,622 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2021-10-28 23:12:47,623 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 [2021-10-28 23:12:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-10-28 23:12:47,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:12:47,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:47,624 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:12:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:12:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:12:47,702 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:12:47,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:12:47,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 23:12:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:12:47,716 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 2 loop predicates [2021-10-28 23:12:47,716 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 4 states. [2021-10-28 23:12:47,738 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 [2021-10-28 23:12:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:12:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-10-28 23:12:47,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:12:47,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:47,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-10-28 23:12:47,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:47,740 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-28 23:12:47,740 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:12:47,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2021-10-28 23:12:47,742 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:12:47,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-10-28 23:12:47,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:12:47,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:12:47,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:12:47,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:12:47,743 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:47,743 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:47,743 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:12:47,743 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:12:47,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:12:47,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:12:47,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:12:47,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:12:47 BoogieIcfgContainer [2021-10-28 23:12:47,750 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:12:47,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:12:47,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:12:47,751 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:12:47,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:12:44" (3/4) ... [2021-10-28 23:12:47,755 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:12:47,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:12:47,757 INFO L168 Benchmark]: Toolchain (without parser) took 4226.56 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.3 MB in the beginning and 83.8 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:47,758 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:47,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.41 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.1 MB in the beginning and 92.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:47,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:47,760 INFO L168 Benchmark]: Boogie Preprocessor took 19.31 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.8 MB in the end (delta: 691.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:47,761 INFO L168 Benchmark]: RCFGBuilder took 308.07 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 82.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:47,762 INFO L168 Benchmark]: BuchiAutomizer took 3607.88 ms. Allocated memory is still 115.3 MB. Free memory was 82.8 MB in the beginning and 83.8 MB in the end (delta: -968.9 kB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:12:47,762 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 115.3 MB. Free memory is still 83.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:12:47,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.41 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.1 MB in the beginning and 92.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 115.3 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.31 ms. Allocated memory is still 115.3 MB. Free memory was 91.5 MB in the beginning and 90.8 MB in the end (delta: 691.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 308.07 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 82.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3607.88 ms. Allocated memory is still 115.3 MB. Free memory was 82.8 MB in the beginning and 83.8 MB in the end (delta: -968.9 kB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.71 ms. Allocated memory is still 115.3 MB. Free memory is still 83.8 MB. 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 60ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:12:47,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f81036e7-2f11-4bab-9ff8-c5d1220d4dc7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...