./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.18.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_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.18.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:39:46,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:39:46,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:39:46,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:39:46,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:39:46,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:39:46,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:39:46,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:39:46,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:39:46,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:39:46,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:39:46,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:39:46,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:39:46,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:39:46,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:39:46,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:39:46,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:39:46,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:39:46,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:39:46,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:39:46,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:39:46,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:39:46,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:39:46,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:39:46,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:39:46,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:39:46,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:39:46,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:39:46,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:39:46,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:39:46,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:39:46,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:39:46,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:39:46,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:39:46,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:39:46,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:39:46,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:39:46,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:39:46,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:39:46,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:39:46,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:39:46,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:39:46,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:39:46,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:39:46,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:39:46,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:39:46,871 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:39:46,871 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:39:46,871 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:39:46,872 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:39:46,872 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:39:46,872 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:39:46,873 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:39:46,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:39:46,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:39:46,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:39:46,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:39:46,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:39:46,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:39:46,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:39:46,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:39:46,876 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:39:46,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:39:46,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:39:46,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:39:46,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:39:46,878 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:39:46,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:39:46,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:39:46,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:39:46,879 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:39:46,882 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:39:46,882 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_a073faa4-5465-4df7-9737-a18d3bfa5677/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd4093f0fb25d9d8e9de7e7010b28ffecefa6ef0 [2020-11-29 19:39:47,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:39:47,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:39:47,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:39:47,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:39:47,321 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:39:47,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.18.c [2020-11-29 19:39:47,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/data/c134271cd/b003886c84534d5f8e989e01f5463524/FLAG1dc87076b [2020-11-29 19:39:47,991 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:39:47,992 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/sv-benchmarks/c/termination-restricted-15/b.18.c [2020-11-29 19:39:48,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/data/c134271cd/b003886c84534d5f8e989e01f5463524/FLAG1dc87076b [2020-11-29 19:39:48,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/bin/uautomizer/data/c134271cd/b003886c84534d5f8e989e01f5463524 [2020-11-29 19:39:48,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:39:48,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:39:48,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:48,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:39:48,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:39:48,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2faeffbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48, skipping insertion in model container [2020-11-29 19:39:48,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:39:48,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:39:48,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:48,617 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:39:48,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:39:48,684 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:39:48,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48 WrapperNode [2020-11-29 19:39:48,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:39:48,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:48,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:39:48,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:39:48,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:39:48,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:39:48,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:39:48,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:39:48,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... [2020-11-29 19:39:48,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:39:48,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:39:48,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:39:48,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:39:48,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:39:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:39:49,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:39:49,149 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 19:39:49,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:49 BoogieIcfgContainer [2020-11-29 19:39:49,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:39:49,153 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:39:49,153 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:39:49,159 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:39:49,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:49,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:39:48" (1/3) ... [2020-11-29 19:39:49,164 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5776c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:49, skipping insertion in model container [2020-11-29 19:39:49,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:49,165 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:39:48" (2/3) ... [2020-11-29 19:39:49,166 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5776c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:39:49, skipping insertion in model container [2020-11-29 19:39:49,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:39:49,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:49" (3/3) ... [2020-11-29 19:39:49,169 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.18.c [2020-11-29 19:39:49,278 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:39:49,278 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:39:49,278 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:39:49,279 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:39:49,279 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:39:49,279 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:39:49,279 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:39:49,280 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:39:49,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 19:39:49,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:39:49,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:49,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:49,328 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:39:49,328 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:39:49,328 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:39:49,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-29 19:39:49,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:39:49,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:49,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:49,331 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:39:49,331 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:39:49,340 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; 5#L15-3true [2020-11-29 19:39:49,341 INFO L796 eck$LassoCheckResult]: Loop: 5#L15-3true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3#L10true assume !(main_~x~0 > main_~y~0); 8#L15-2true assume !(main_~y~0 > 0); 5#L15-3true [2020-11-29 19:39:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:39:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:49,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175195261] [2020-11-29 19:39:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,462 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:49,488 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 40272, now seen corresponding path program 1 times [2020-11-29 19:39:49,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:49,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850043290] [2020-11-29 19:39:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:49,579 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 19:39:49,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850043290] [2020-11-29 19:39:49,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:49,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:39:49,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039741626] [2020-11-29 19:39:49,587 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:49,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:49,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:49,613 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-29 19:39:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:49,770 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-29 19:39:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:49,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-29 19:39:49,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 19:39:49,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2020-11-29 19:39:49,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 19:39:49,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 19:39:49,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 19:39:49,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:49,796 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:39:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 19:39:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 19:39:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:39:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 19:39:49,853 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:39:49,853 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:39:49,853 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:39:49,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 19:39:49,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 19:39:49,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:49,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:49,855 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:39:49,855 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:39:49,855 INFO L794 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 37#L15-3 [2020-11-29 19:39:49,855 INFO L796 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 33#L10 assume main_~x~0 > main_~y~0; 35#L11-2 assume !(main_~x~0 > 0); 37#L15-3 [2020-11-29 19:39:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-29 19:39:49,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:49,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215583750] [2020-11-29 19:39:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:49,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:49,870 INFO L82 PathProgramCache]: Analyzing trace with hash 39824, now seen corresponding path program 1 times [2020-11-29 19:39:49,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:49,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750840499] [2020-11-29 19:39:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:49,892 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 19:39:49,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750840499] [2020-11-29 19:39:49,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:49,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:39:49,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169429209] [2020-11-29 19:39:49,893 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:49,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:49,895 INFO L87 Difference]: Start difference. First operand 6 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 19:39:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:49,938 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2020-11-29 19:39:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:49,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-11-29 19:39:49,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-29 19:39:49,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 11 transitions. [2020-11-29 19:39:49,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 19:39:49,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 19:39:49,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 19:39:49,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:49,966 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:39:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 19:39:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 19:39:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 19:39:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 19:39:49,974 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:39:49,974 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:39:49,974 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:39:49,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 19:39:49,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 19:39:49,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:49,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:49,976 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:39:49,976 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 19:39:49,976 INFO L794 eck$LassoCheckResult]: Stem: 56#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; 57#L15-3 [2020-11-29 19:39:49,976 INFO L796 eck$LassoCheckResult]: Loop: 57#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 53#L10 assume !(main_~x~0 > main_~y~0); 54#L15-2 assume !!(main_~y~0 > 0);main_~y~0 := main_~y~0 - 1; 58#L15-2 assume !(main_~y~0 > 0); 57#L15-3 [2020-11-29 19:39:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2020-11-29 19:39:49,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:49,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746307063] [2020-11-29 19:39:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:49,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:50,002 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:50,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1248528, now seen corresponding path program 1 times [2020-11-29 19:39:50,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:50,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860546926] [2020-11-29 19:39:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:50,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:50,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:50,054 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:50,055 INFO L82 PathProgramCache]: Analyzing trace with hash 29877679, now seen corresponding path program 1 times [2020-11-29 19:39:50,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:50,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832933614] [2020-11-29 19:39:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:50,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:50,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:50,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:50,186 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:39:50,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:39:50,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:39:50,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:39:50,187 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:39:50,187 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:50,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:39:50,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:39:50,188 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2020-11-29 19:39:50,188 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:39:50,188 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:39:50,219 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 19:39:50,269 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 19:39:50,275 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 19:39:50,409 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:39:50,410 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:50,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:39:50,423 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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) [2020-11-29 19:39:50,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:39:50,487 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:50,632 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:39:50,634 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:39:50,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:39:50,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:39:50,635 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:39:50,635 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:39:50,635 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:50,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:39:50,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:39:50,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2020-11-29 19:39:50,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:39:50,635 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:39:50,638 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 19:39:50,705 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 19:39:50,712 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 19:39:50,797 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:39:50,802 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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) [2020-11-29 19:39:50,812 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 19:39:50,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:39:50,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:39:50,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:39:50,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:39:50,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:39:50,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:39:50,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:50,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:39:50,842 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:39:50,843 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:50,853 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:39:50,853 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:39:50,854 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:39:50,855 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 19:39:50,887 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:39:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:50,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:39:50,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:39:50,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:39:51,011 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 19:39:51,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-29 19:39:51,150 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2020-11-29 19:39:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:39:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:39:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-29 19:39:51,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 19:39:51,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 19:39:51,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 8 letters. [2020-11-29 19:39:51,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-11-29 19:39:51,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:39:51,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 15 states and 21 transitions. [2020-11-29 19:39:51,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 19:39:51,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 19:39:51,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2020-11-29 19:39:51,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:39:51,161 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2020-11-29 19:39:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2020-11-29 19:39:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-11-29 19:39:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:39:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-11-29 19:39:51,165 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-29 19:39:51,165 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-29 19:39:51,165 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:39:51,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-11-29 19:39:51,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:39:51,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:51,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:51,167 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:39:51,167 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 19:39:51,168 INFO L794 eck$LassoCheckResult]: Stem: 120#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; 121#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2020-11-29 19:39:51,168 INFO L796 eck$LassoCheckResult]: Loop: 115#L10 assume main_~x~0 > main_~y~0; 116#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 125#L11-2 assume !(main_~x~0 > 0); 122#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 115#L10 [2020-11-29 19:39:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:39:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:51,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076358098] [2020-11-29 19:39:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1332576, now seen corresponding path program 1 times [2020-11-29 19:39:51,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:51,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844816134] [2020-11-29 19:39:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:39:51,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844816134] [2020-11-29 19:39:51,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:51,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:39:51,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199559495] [2020-11-29 19:39:51,202 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:39:51,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:39:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:39:51,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:39:51,204 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-29 19:39:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:39:51,215 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-29 19:39:51,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:39:51,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-29 19:39:51,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:39:51,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2020-11-29 19:39:51,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 19:39:51,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 19:39:51,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-29 19:39:51,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:39:51,219 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-29 19:39:51,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-29 19:39:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-11-29 19:39:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 19:39:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2020-11-29 19:39:51,221 INFO L714 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-29 19:39:51,221 INFO L594 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-29 19:39:51,221 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:39:51,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2020-11-29 19:39:51,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:39:51,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:39:51,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:39:51,222 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:39:51,222 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:39:51,223 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L15-3 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 147#L10 assume main_~x~0 > main_~y~0; 148#L11-2 [2020-11-29 19:39:51,223 INFO L796 eck$LassoCheckResult]: Loop: 148#L11-2 assume !!(main_~x~0 > 0);main_~x~0 := main_~x~0 - 1; 148#L11-2 [2020-11-29 19:39:51,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,224 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 19:39:51,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:51,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218432353] [2020-11-29 19:39:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,243 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,245 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-11-29 19:39:51,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:51,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375423229] [2020-11-29 19:39:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,256 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2020-11-29 19:39:51,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:39:51,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276515601] [2020-11-29 19:39:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:39:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:39:51,289 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:39:51,291 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:39:51,313 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:39:51,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:39:51,313 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:39:51,313 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:39:51,313 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:39:51,313 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:51,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:39:51,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:39:51,314 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2020-11-29 19:39:51,314 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:39:51,314 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:39:51,316 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 19:39:51,322 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 19:39:51,332 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 19:39:51,402 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:39:51,402 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:51,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:39:51,412 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:51,418 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:39:51,419 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_a073faa4-5465-4df7-9737-a18d3bfa5677/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) [2020-11-29 19:39:51,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:39:51,473 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:51,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:39:51,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:39:51,566 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:39:51,569 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:39:51,569 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:39:51,569 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:39:51,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:39:51,570 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:39:51,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:51,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:39:51,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:39:51,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2020-11-29 19:39:51,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:39:51,570 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:39:51,572 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 19:39:51,584 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 19:39:51,596 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 19:39:51,682 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:39:51,683 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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) [2020-11-29 19:39:51,698 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 19:39:51,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:39:51,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:39:51,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:39:51,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:39:51,707 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:39:51,707 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:39:51,717 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:51,772 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 19:39:51,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:39:51,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:39:51,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:39:51,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:39:51,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:39:51,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:39:51,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:39:51,783 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:39:51,786 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 19:39:51,786 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a073faa4-5465-4df7-9737-a18d3bfa5677/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 19:39:51,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:39:51,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:39:51,795 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:39:51,795 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 19:39:51,827 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:39:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:39:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:51,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:39:51,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:51,887 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:39:51,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:39:51,888 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 19:39:51,889 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 19:39:51,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 19:39:51,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 10 states and 13 transitions. Complement of second has 2 states. [2020-11-29 19:39:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-29 19:39:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:39:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2020-11-29 19:39:51,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 19:39:51,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-29 19:39:51,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 19:39:51,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:39:51,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2020-11-29 19:39:51,901 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:39:51,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-11-29 19:39:51,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:39:51,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:39:51,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:39:51,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:39:51,902 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:39:51,902 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:39:51,902 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:39:51,902 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 19:39:51,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:39:51,902 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:39:51,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:39:51,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:39:51 BoogieIcfgContainer [2020-11-29 19:39:51,912 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:39:51,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:39:51,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:39:51,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:39:51,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:39:49" (3/4) ... [2020-11-29 19:39:51,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:39:51,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:39:51,921 INFO L168 Benchmark]: Toolchain (without parser) took 3569.60 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 61.2 MB in the beginning and 57.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:51,928 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 77.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:51,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.52 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 74.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:51,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:51,931 INFO L168 Benchmark]: Boogie Preprocessor took 33.90 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 72.3 MB in the end (delta: 895.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:51,933 INFO L168 Benchmark]: RCFGBuilder took 373.96 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 63.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:51,934 INFO L168 Benchmark]: BuchiAutomizer took 2758.96 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 63.3 MB in the beginning and 57.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:51,938 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 121.6 MB. Free memory is still 57.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:51,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 77.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.52 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 74.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 96.5 MB. Free memory was 74.3 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.90 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 72.3 MB in the end (delta: 895.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 373.96 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 63.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2758.96 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 63.3 MB in the beginning and 57.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 121.6 MB. Free memory is still 57.5 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 (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 34 SDtfs, 25 SDslu, 7 SDs, 0 SdLazy, 34 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf96 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...