./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer --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 f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:30:05,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:30:06,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:30:06,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:30:06,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:30:06,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:30:06,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:30:06,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:30:06,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:30:06,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:30:06,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:30:06,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:30:06,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:30:06,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:30:06,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:30:06,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:30:06,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:30:06,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:30:06,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:30:06,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:30:06,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:30:06,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:30:06,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:30:06,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:30:06,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:30:06,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:30:06,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:30:06,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:30:06,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:30:06,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:30:06,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:30:06,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:30:06,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:30:06,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:30:06,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:30:06,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:30:06,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:30:06,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:30:06,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:30:06,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:30:06,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:30:06,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:30:06,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:30:06,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:30:06,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:30:06,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:30:06,195 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:30:06,195 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:30:06,195 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:30:06,195 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:30:06,196 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:30:06,196 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:30:06,197 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:30:06,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:30:06,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:30:06,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:30:06,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:30:06,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:30:06,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:30:06,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:30:06,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:30:06,200 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:30:06,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:30:06,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:30:06,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:30:06,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:30:06,201 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:30:06,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:30:06,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:30:06,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:30:06,203 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:30:06,206 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:30:06,206 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-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2020-11-29 23:30:06,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:30:06,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:30:06,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:30:06,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:30:06,495 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:30:06,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-29 23:30:06,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/data/23c0814e2/a0f590383e2c47338b3e88727e6d98b0/FLAG57909df26 [2020-11-29 23:30:07,082 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:30:07,083 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-29 23:30:07,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/data/23c0814e2/a0f590383e2c47338b3e88727e6d98b0/FLAG57909df26 [2020-11-29 23:30:07,472 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/data/23c0814e2/a0f590383e2c47338b3e88727e6d98b0 [2020-11-29 23:30:07,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:30:07,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:30:07,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:30:07,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:30:07,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:30:07,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629a7fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07, skipping insertion in model container [2020-11-29 23:30:07,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:30:07,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:30:07,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:30:07,682 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:30:07,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:30:07,724 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:30:07,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07 WrapperNode [2020-11-29 23:30:07,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:30:07,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:30:07,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:30:07,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:30:07,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:30:07,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:30:07,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:30:07,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:30:07,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... [2020-11-29 23:30:07,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:30:07,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:30:07,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:30:07,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:30:07,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:07,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:30:07,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:30:08,079 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:30:08,080 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 23:30:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:30:08 BoogieIcfgContainer [2020-11-29 23:30:08,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:30:08,083 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:30:08,083 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:30:08,087 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:30:08,088 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:30:08,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:30:07" (1/3) ... [2020-11-29 23:30:08,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c534973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:30:08, skipping insertion in model container [2020-11-29 23:30:08,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:30:08,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:07" (2/3) ... [2020-11-29 23:30:08,091 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c534973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:30:08, skipping insertion in model container [2020-11-29 23:30:08,091 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:30:08,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:30:08" (3/3) ... [2020-11-29 23:30:08,093 INFO L373 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-29 23:30:08,169 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:30:08,170 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:30:08,170 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:30:08,170 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:30:08,170 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:30:08,170 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:30:08,170 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:30:08,170 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:30:08,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:30:08,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:30:08,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:08,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:08,207 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:30:08,208 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:30:08,208 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:30:08,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 23:30:08,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:30:08,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:08,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:08,211 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:30:08,211 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:30:08,218 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, 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; 3#L17-2true [2020-11-29 23:30:08,219 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 6#L19-2true assume !(main_~y~0 < main_~x~0); 5#L19-3true main_~x~0 := main_~x~0 - 1; 3#L17-2true [2020-11-29 23:30:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 23:30:08,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:08,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035974195] [2020-11-29 23:30:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,327 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:08,349 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 23:30:08,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:08,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702741522] [2020-11-29 23:30:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 23:30:08,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:08,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984263785] [2020-11-29 23:30:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:08,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:08,419 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:08,526 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2020-11-29 23:30:08,567 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:08,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:08,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:08,568 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:08,569 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:30:08,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:08,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:08,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2020-11-29 23:30:08,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:08,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:08,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:08,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:08,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:08,773 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:08,774 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:08,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:08,784 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:08,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:08,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:08,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:08,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:08,854 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:08,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:30:08,887 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,918 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:30:08,919 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:08,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:08,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:08,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:08,920 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:30:08,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:08,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:08,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:08,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2020-11-29 23:30:08,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:08,920 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:08,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:08,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:08,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,116 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 23:30:09,200 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:09,205 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:09,215 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:09,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:09,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:09,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:09,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:09,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:09,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:09,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:30:09,235 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:30:09,235 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,240 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:30:09,240 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:30:09,241 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:30:09,242 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-11-29 23:30:09,264 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:30:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:09,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:30:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:30:09,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:09,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:09,392 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 [2020-11-29 23:30:09,392 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 23:30:09,461 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 23:30:09,471 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 [2020-11-29 23:30:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 23:30:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 23:30:09,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 23:30:09,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:09,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 23:30:09,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:09,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 23:30:09,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:09,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 23:30:09,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:09,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 23:30:09,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 23:30:09,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 23:30:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 23:30:09,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:30:09,525 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 23:30:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 23:30:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 23:30:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:30:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 23:30:09,553 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 23:30:09,553 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 23:30:09,553 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:30:09,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 23:30:09,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:09,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:09,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:09,555 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 23:30:09,555 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:30:09,555 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, 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; 70#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 72#L19-2 [2020-11-29 23:30:09,555 INFO L796 eck$LassoCheckResult]: Loop: 72#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 72#L19-2 [2020-11-29 23:30:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 23:30:09,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:09,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704230340] [2020-11-29 23:30:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 23:30:09,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:09,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267769136] [2020-11-29 23:30:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 23:30:09,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:09,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595370399] [2020-11-29 23:30:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:09,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:09,636 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:09,694 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:09,694 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:09,694 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:09,694 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:09,695 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:30:09,695 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,695 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:09,695 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:09,695 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2020-11-29 23:30:09,695 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:09,695 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:09,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:09,801 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:09,801 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:09,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:09,810 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:09,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:09,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:09,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:09,842 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:09,866 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:09,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:30:09,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:22,057 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-11-29 23:30:22,065 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:22,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:22,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:22,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:22,066 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:30:22,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:22,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:22,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2020-11-29 23:30:22,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:22,066 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:22,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:22,240 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:22,241 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:22,248 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:22,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:22,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:22,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:22,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:22,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:30:22,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:22,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:22,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:22,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:22,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:22,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:22,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:22,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:22,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,308 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:22,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:22,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:22,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:22,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:22,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:22,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:22,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:30:22,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:22,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:22,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:22,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:22,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:22,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:22,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:22,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:30:22,406 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:22,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:22,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:22,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:22,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:22,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:22,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:30:22,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,472 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:30:22,484 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-29 23:30:22,484 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:22,491 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:22,497 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 23:30:22,497 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:30:22,497 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-29 23:30:22,540 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 23:30:22,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:22,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:30:22,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:22,598 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:30:22,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:22,599 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:30:22,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 23:30:22,644 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-29 23:30:22,646 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 [2020-11-29 23:30:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:30:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:30:22,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 23:30:22,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:22,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 23:30:22,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:22,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 23:30:22,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:22,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-29 23:30:22,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:22,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-29 23:30:22,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 23:30:22,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 23:30:22,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-29 23:30:22,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:30:22,657 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-29 23:30:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-29 23:30:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-29 23:30:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 23:30:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-29 23:30:22,659 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 23:30:22,659 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 23:30:22,659 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:30:22,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-29 23:30:22,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:22,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:22,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:22,661 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 23:30:22,661 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:30:22,662 INFO L794 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, 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; 127#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 128#L19-2 assume !(main_~y~0 < main_~x~0); 131#L19-3 main_~x~0 := main_~x~0 - 1; 129#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 130#L19-2 [2020-11-29 23:30:22,662 INFO L796 eck$LassoCheckResult]: Loop: 130#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 130#L19-2 [2020-11-29 23:30:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-29 23:30:22,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634263893] [2020-11-29 23:30:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,688 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-29 23:30:22,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148536050] [2020-11-29 23:30:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,708 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2020-11-29 23:30:22,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013083191] [2020-11-29 23:30:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:22,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013083191] [2020-11-29 23:30:22,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067413287] [2020-11-29 23:30:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:30:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:22,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:30:22,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:22,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:30:22,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 23:30:22,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729022028] [2020-11-29 23:30:22,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:30:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:30:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:30:22,881 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 7 states. [2020-11-29 23:30:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:30:22,952 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-29 23:30:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:30:22,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-29 23:30:22,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:22,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 8 states and 10 transitions. [2020-11-29 23:30:22,962 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 23:30:22,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 23:30:22,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-29 23:30:22,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:30:22,963 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:30:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-29 23:30:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 23:30:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 23:30:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 23:30:22,965 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 23:30:22,965 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 23:30:22,965 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 23:30:22,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-29 23:30:22,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:22,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:22,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:22,966 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-11-29 23:30:22,966 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:30:22,966 INFO L794 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, 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; 180#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 181#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 186#L19-2 assume !(main_~y~0 < main_~x~0); 185#L19-3 main_~x~0 := main_~x~0 - 1; 182#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 183#L19-2 [2020-11-29 23:30:22,966 INFO L796 eck$LassoCheckResult]: Loop: 183#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 183#L19-2 [2020-11-29 23:30:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,966 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2020-11-29 23:30:22,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599101643] [2020-11-29 23:30:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,980 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 3 times [2020-11-29 23:30:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054568213] [2020-11-29 23:30:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,984 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:22,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:22,986 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 3 times [2020-11-29 23:30:22,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:22,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599862051] [2020-11-29 23:30:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599862051] [2020-11-29 23:30:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003363244] [2020-11-29 23:30:23,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 23:30:23,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:30:23,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:30:23,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:30:23,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:30:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:23,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:30:23,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-29 23:30:23,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800487866] [2020-11-29 23:30:23,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:30:23,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:30:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:30:23,173 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 8 states. [2020-11-29 23:30:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:30:23,255 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-29 23:30:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:30:23,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2020-11-29 23:30:23,256 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:23,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 12 transitions. [2020-11-29 23:30:23,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 23:30:23,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 23:30:23,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2020-11-29 23:30:23,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 23:30:23,257 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-29 23:30:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2020-11-29 23:30:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-11-29 23:30:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 23:30:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2020-11-29 23:30:23,259 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:30:23,259 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-29 23:30:23,259 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 23:30:23,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2020-11-29 23:30:23,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 23:30:23,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:30:23,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:30:23,260 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-11-29 23:30:23,260 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 23:30:23,260 INFO L794 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, 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; 238#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 239#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 244#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 245#L19-2 assume !(main_~y~0 < main_~x~0); 242#L19-3 main_~x~0 := main_~x~0 - 1; 240#L17-2 assume !!(main_~x~0 >= 0 && main_~x~0 <= 1073741823);main_~y~0 := 1; 241#L19-2 [2020-11-29 23:30:23,260 INFO L796 eck$LassoCheckResult]: Loop: 241#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 241#L19-2 [2020-11-29 23:30:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1360231782, now seen corresponding path program 4 times [2020-11-29 23:30:23,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:23,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370830894] [2020-11-29 23:30:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,276 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:23,277 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 4 times [2020-11-29 23:30:23,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:23,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525836117] [2020-11-29 23:30:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,283 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash 782487737, now seen corresponding path program 5 times [2020-11-29 23:30:23,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:30:23,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274320116] [2020-11-29 23:30:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:30:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:30:23,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:30:23,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:30:23,414 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:23,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:23,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:23,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:23,414 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:30:23,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:23,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:23,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration5_Lasso [2020-11-29 23:30:23,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:23,415 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:23,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:23,538 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:23,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:23,561 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:23,567 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:23,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:23,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:23,600 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:23,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:23,625 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:23,625 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:23,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:23,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:30:23,650 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:30:23,674 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:30:23,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:30:23,809 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:30:23,824 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:30:23,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:30:23,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:30:23,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:30:23,825 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:30:23,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:30:23,825 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:30:23,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration5_Lasso [2020-11-29 23:30:23,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:30:23,825 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:30:23,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:30:23,967 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:30:23,967 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:23,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:23,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:23,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:23,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:23,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:23,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:23,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:23,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:23,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:24,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:24,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:24,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:24,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:24,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:24,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:24,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:24,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,028 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:24,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:24,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:24,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:30:24,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:24,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:24,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:24,071 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:30:24,071 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:24,117 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:24,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:24,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:24,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:24,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:24,123 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:30:24,123 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,127 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:24,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:24,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:24,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:24,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:24,168 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:30:24,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 23:30:24,173 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:24,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 23:30:24,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:30:24,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:30:24,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:30:24,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:30:24,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:30:24,221 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:30:24,245 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-29 23:30:24,245 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcaa6f54-81f9-4246-9bed-aabad406fdcd/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 23:30:24,248 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:30:24,251 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-29 23:30:24,251 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:30:24,252 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2020-11-29 23:30:24,285 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 23:30:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:24,357 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:30:24,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:30:24,394 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-29 23:30:24,395 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 [2020-11-29 23:30:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:30:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:30:24,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:30:24,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:24,396 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:30:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,454 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:24,456 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:30:24,456 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:30:24,495 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 15 states and 19 transitions. Complement of second has 5 states. [2020-11-29 23:30:24,497 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 [2020-11-29 23:30:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:30:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 23:30:24,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:30:24,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:24,498 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 23:30:24,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:30:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:30:24,555 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 23:30:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:30:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:30:24,556 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 23:30:24,556 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 23:30:24,623 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 13 transitions. Complement of second has 4 states. [2020-11-29 23:30:24,624 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 [2020-11-29 23:30:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 23:30:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 23:30:24,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2020-11-29 23:30:24,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:24,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-29 23:30:24,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:24,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-29 23:30:24,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:30:24,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-29 23:30:24,626 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:30:24,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:30:24,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:30:24,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:30:24,627 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 23:30:24,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:30:24,627 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:30:24,627 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:30:24,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:30:24 BoogieIcfgContainer [2020-11-29 23:30:24,633 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:30:24,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:30:24,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:30:24,634 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:30:24,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:30:08" (3/4) ... [2020-11-29 23:30:24,639 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:30:24,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:30:24,647 INFO L168 Benchmark]: Toolchain (without parser) took 17161.91 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.4 MB in the beginning and 34.1 MB in the end (delta: 23.3 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:30:24,648 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:30:24,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.65 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.2 MB in the beginning and 93.3 MB in the end (delta: -36.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:30:24,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 115.3 MB. Free memory was 93.3 MB in the beginning and 92.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:30:24,650 INFO L168 Benchmark]: Boogie Preprocessor took 21.56 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 91.3 MB in the end (delta: 722.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:30:24,651 INFO L168 Benchmark]: RCFGBuilder took 287.64 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 82.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:30:24,654 INFO L168 Benchmark]: BuchiAutomizer took 16550.43 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 34.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:30:24,654 INFO L168 Benchmark]: Witness Printer took 5.88 ms. Allocated memory is still 115.3 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:30:24,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.65 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.2 MB in the beginning and 93.3 MB in the end (delta: -36.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 115.3 MB. Free memory was 93.3 MB in the beginning and 92.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.56 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 91.3 MB in the end (delta: 722.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.64 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 82.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 16550.43 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 34.1 MB in the end (delta: 48.8 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.88 ms. Allocated memory is still 115.3 MB. Free memory is still 34.1 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 15.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 26 SDslu, 7 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...