./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/half_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/half_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 32bit --witnessprinter.graph.data.programhash ca10e259bac305ecd55fc4a34d201bc0894aa533 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:52:21,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:21,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:21,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:21,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:21,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:21,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:21,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:21,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:21,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:21,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:21,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:21,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:21,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:21,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:21,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:21,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:21,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:21,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:21,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:21,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:21,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:21,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:21,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:21,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:21,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:21,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:21,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:21,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:21,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:21,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:21,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:21,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:21,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:21,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:21,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:21,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:21,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:21,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:21,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:21,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:21,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:52:21,874 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:21,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:21,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:21,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:21,886 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:21,886 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:52:21,886 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:52:21,886 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:52:21,887 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:52:21,887 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:52:21,887 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:52:21,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:21,887 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:52:21,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:21,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:21,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:52:21,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:21,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:52:21,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:52:21,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:52:21,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:52:21,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:21,890 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:52:21,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:21,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:52:21,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:21,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:21,891 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:52:21,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:21,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:21,892 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:52:21,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:52:21,893 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca10e259bac305ecd55fc4a34d201bc0894aa533 [2019-11-25 08:52:22,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:22,065 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:22,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:22,069 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:22,069 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:22,069 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/half_2.i [2019-11-25 08:52:22,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/data/e4a672cca/0c52d5c7ba76484abbc5ec71d576f144/FLAG08be55ace [2019-11-25 08:52:22,486 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:22,487 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/sv-benchmarks/c/loop-invgen/half_2.i [2019-11-25 08:52:22,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/data/e4a672cca/0c52d5c7ba76484abbc5ec71d576f144/FLAG08be55ace [2019-11-25 08:52:22,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/bin/uautomizer/data/e4a672cca/0c52d5c7ba76484abbc5ec71d576f144 [2019-11-25 08:52:22,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:22,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:22,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:22,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:22,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:22,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:22" (1/1) ... [2019-11-25 08:52:22,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2928109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:22, skipping insertion in model container [2019-11-25 08:52:22,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:22" (1/1) ... [2019-11-25 08:52:22,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:22,965 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:23,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:23,110 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:23,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:23,199 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:23,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23 WrapperNode [2019-11-25 08:52:23,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:23,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:23,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:23,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:23,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:23,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:23,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:23,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:23,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... [2019-11-25 08:52:23,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:23,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:23,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:23,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:23,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:23,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:23,529 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:23,529 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:52:23,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:23 BoogieIcfgContainer [2019-11-25 08:52:23,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:23,531 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:52:23,531 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:52:23,534 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:52:23,535 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:23,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:52:22" (1/3) ... [2019-11-25 08:52:23,537 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e0a4524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:23, skipping insertion in model container [2019-11-25 08:52:23,537 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:23,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:23" (2/3) ... [2019-11-25 08:52:23,539 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e0a4524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:23, skipping insertion in model container [2019-11-25 08:52:23,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:23,540 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:23" (3/3) ... [2019-11-25 08:52:23,541 INFO L371 chiAutomizerObserver]: Analyzing ICFG half_2.i [2019-11-25 08:52:23,607 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:52:23,607 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:52:23,607 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:52:23,608 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:23,608 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:23,608 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:52:23,608 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:23,608 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:52:23,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-25 08:52:23,649 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-25 08:52:23,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:23,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:23,657 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:52:23,657 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:52:23,657 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:52:23,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-25 08:52:23,659 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-25 08:52:23,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:23,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:23,660 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:52:23,660 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:52:23,668 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L13true assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 13#L16-2true [2019-11-25 08:52:23,668 INFO L796 eck$LassoCheckResult]: Loop: 13#L16-2true assume !!(main_~i~0 < main_~n~0);main_#t~post2 := main_~k~0;main_~k~0 := main_#t~post2 - 1;havoc main_#t~post2;main_~i~0 := 2 + main_~i~0; 13#L16-2true [2019-11-25 08:52:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-25 08:52:23,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:23,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446888979] [2019-11-25 08:52:23,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,783 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:23,784 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-11-25 08:52:23,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:23,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229034937] [2019-11-25 08:52:23,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,810 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:23,811 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2019-11-25 08:52:23,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:23,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711681906] [2019-11-25 08:52:23,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:23,842 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:23,945 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:23,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:23,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:23,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:23,946 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:23,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:23,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:23,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:23,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2019-11-25 08:52:23,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:23,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:23,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:23,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:23,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,054 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:24,055 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:24,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:24,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:24,080 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:24,080 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:24,092 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:24,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:24,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:24,118 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0} Honda state: {ULTIMATE.start_main_~k~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0=-3}, {ULTIMATE.start_main_~k~0=-1}, {ULTIMATE.start_main_~k~0=3}] Lambdas: [1, 4, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:24,123 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:24,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:24,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:24,237 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:24,239 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:24,239 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:24,239 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:24,239 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:24,240 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:24,240 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:24,240 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:24,240 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:24,240 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration1_Loop [2019-11-25 08:52:24,240 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:24,240 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:24,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,412 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:24,416 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,435 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 [2019-11-25 08:52:24,436 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:24,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:24,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:24,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:24,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:24,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:24,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:24,444 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,464 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 [2019-11-25 08:52:24,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:24,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:24,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:24,466 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:24,466 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:24,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:24,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:24,469 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,476 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 [2019-11-25 08:52:24,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:24,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:24,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:24,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:24,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:24,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:24,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:24,485 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:24,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:24,489 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_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:24,499 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:24,500 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:24,500 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:24,500 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:24,506 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:24,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:24,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:24,560 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:24,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:24,575 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 [2019-11-25 08:52:24,577 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 2 states. [2019-11-25 08:52:24,623 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 2 states. Result 34 states and 44 transitions. Complement of second has 5 states. [2019-11-25 08:52:24,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-25 08:52:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2019-11-25 08:52:24,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-25 08:52:24,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:24,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-25 08:52:24,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:24,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-25 08:52:24,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:24,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2019-11-25 08:52:24,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:24,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 8 states and 10 transitions. [2019-11-25 08:52:24,638 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:52:24,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:52:24,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2019-11-25 08:52:24,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:24,639 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-25 08:52:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2019-11-25 08:52:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:52:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:52:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2019-11-25 08:52:24,663 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-25 08:52:24,664 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-25 08:52:24,664 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:52:24,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2019-11-25 08:52:24,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:52:24,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:24,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:24,665 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-25 08:52:24,666 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:52:24,666 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_#t~post3, main_#t~post4, main_~n~0, main_~i~0, main_~k~0, main_~j~0;havoc main_~n~0;havoc main_~i~0;havoc main_~k~0;main_~n~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L13 assume !!(main_~n~0 <= 1000000);main_~k~0 := main_~n~0;main_~i~0 := 0; 83#L16-2 assume !(main_~i~0 < main_~n~0); 82#L16-3 main_~j~0 := 0; 81#L21-2 [2019-11-25 08:52:24,666 INFO L796 eck$LassoCheckResult]: Loop: 81#L21-2 assume !!(main_~j~0 < (if main_~n~0 < 0 && 0 != main_~n~0 % 2 then 1 + main_~n~0 / 2 else main_~n~0 / 2));__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 84#L4 assume !(0 == __VERIFIER_assert_~cond); 80#L4-2 main_#t~post3 := main_~k~0;main_~k~0 := main_#t~post3 - 1;havoc main_#t~post3;main_#t~post4 := main_~j~0;main_~j~0 := 1 + main_#t~post4;havoc main_#t~post4; 81#L21-2 [2019-11-25 08:52:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:24,667 INFO L82 PathProgramCache]: Analyzing trace with hash 959500, now seen corresponding path program 1 times [2019-11-25 08:52:24,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:24,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863612140] [2019-11-25 08:52:24,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:24,675 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash 57822, now seen corresponding path program 1 times [2019-11-25 08:52:24,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:24,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422708578] [2019-11-25 08:52:24,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:24,692 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1480278541, now seen corresponding path program 1 times [2019-11-25 08:52:24,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:24,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793555669] [2019-11-25 08:52:24,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:24,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793555669] [2019-11-25 08:52:24,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:24,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:52:24,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047954791] [2019-11-25 08:52:24,841 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:24,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:24,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:24,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:24,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:24,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:24,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:24,842 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:24,842 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2019-11-25 08:52:24,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:24,842 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:24,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:24,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:25,168 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2019-11-25 08:52:25,174 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:25,175 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:25,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:25,189 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:25,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:25,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:25,231 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:25,234 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:25,234 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:25,234 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:25,234 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:25,234 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:25,234 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:25,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:25,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:25,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: half_2.i_Iteration2_Loop [2019-11-25 08:52:25,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:25,235 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:25,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:25,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:25,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:25,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:25,549 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2019-11-25 08:52:25,554 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:25,554 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:25,564 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 [2019-11-25 08:52:25,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:25,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:25,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:25,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:25,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:25,569 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:25,569 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:25,572 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:25,576 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:52:25,576 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46703bf8-1e61-43d7-ae4f-d08fb8dcc45b/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 [2019-11-25 08:52:25,583 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:25,584 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:25,584 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:25,584 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2019-11-25 08:52:25,587 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:25,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:25,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:25,619 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:52:25,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:25,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:52:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:25,663 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:52:25,663 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2019-11-25 08:52:25,704 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 6 states. [2019-11-25 08:52:25,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:52:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-11-25 08:52:25,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:52:25,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:25,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-25 08:52:25,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:25,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-25 08:52:25,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:25,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2019-11-25 08:52:25,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:25,708 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2019-11-25 08:52:25,708 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:25,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:25,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:25,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:25,708 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:25,708 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:25,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:52:25,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:52:25,712 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-25 08:52:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:25,715 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-25 08:52:25,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:52:25,716 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-25 08:52:25,716 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:25,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:52:25,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:52:25,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:52:25,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:52:25,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:25,717 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:25,717 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:25,717 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:52:25,718 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:52:25,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:52:25,718 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:52:25,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:52:25,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:52:25 BoogieIcfgContainer [2019-11-25 08:52:25,724 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:52:25,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:25,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:25,725 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:25,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:23" (3/4) ... [2019-11-25 08:52:25,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:52:25,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:25,730 INFO L168 Benchmark]: Toolchain (without parser) took 2792.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 896.7 MB in the end (delta: 54.7 MB). Peak memory consumption was 204.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:25,731 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:25,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:25,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:25,732 INFO L168 Benchmark]: Boogie Preprocessor took 33.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:25,733 INFO L168 Benchmark]: RCFGBuilder took 265.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:25,733 INFO L168 Benchmark]: BuchiAutomizer took 2193.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.7 MB in the end (delta: 222.2 MB). Peak memory consumption was 222.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:25,734 INFO L168 Benchmark]: Witness Printer took 4.23 ms. Allocated memory is still 1.2 GB. Free memory is still 896.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:25,737 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -191.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 265.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2193.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 896.7 MB in the end (delta: 222.2 MB). Peak memory consumption was 222.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.23 ms. Allocated memory is still 1.2 GB. Free memory is still 896.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 17 SDtfs, 21 SDslu, 7 SDs, 0 SdLazy, 13 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital31 mio100 ax100 hnf100 lsp62 ukn100 mio100 lsp100 div225 bol100 ite106 ukn100 eq143 hnf75 smp81 dnf130 smp98 tf107 neg99 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...