./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Parallel.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Parallel.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 fa16f28cdab01c0d49bf2bd46e148912a30ce280 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:40:22,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:40:22,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:40:22,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:40:22,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:40:22,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:40:22,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:40:22,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:40:22,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:40:22,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:40:22,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:40:22,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:40:22,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:40:22,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:40:22,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:40:22,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:40:22,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:40:22,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:40:22,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:40:22,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:40:22,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:40:22,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:40:22,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:40:22,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:40:22,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:40:22,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:40:22,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:40:22,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:40:22,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:40:22,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:40:22,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:40:22,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:40:22,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:40:22,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:40:22,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:40:22,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:40:22,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:40:22,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:40:22,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:40:22,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:40:22,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:40:22,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:40:22,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:40:22,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:40:22,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:40:22,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:40:22,894 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:40:22,894 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:40:22,895 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:40:22,895 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:40:22,895 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:40:22,895 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:40:22,897 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:40:22,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:40:22,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:40:22,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:40:22,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:40:22,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:40:22,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:40:22,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:40:22,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:40:22,901 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:40:22,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:40:22,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:40:22,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:40:22,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:40:22,902 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:40:22,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:40:22,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:40:22,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:40:22,903 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:40:22,905 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:40:22,906 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> fa16f28cdab01c0d49bf2bd46e148912a30ce280 [2020-10-19 18:40:23,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:40:23,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:40:23,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:40:23,271 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:40:23,272 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:40:23,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Parallel.c [2020-10-19 18:40:23,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b227e51b5/70866bf803574e6aafee8d0b61382d15/FLAG71099d319 [2020-10-19 18:40:23,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:40:23,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Parallel.c [2020-10-19 18:40:23,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b227e51b5/70866bf803574e6aafee8d0b61382d15/FLAG71099d319 [2020-10-19 18:40:24,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b227e51b5/70866bf803574e6aafee8d0b61382d15 [2020-10-19 18:40:24,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:40:24,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:40:24,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:40:24,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:40:24,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:40:24,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbaf99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24, skipping insertion in model container [2020-10-19 18:40:24,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:40:24,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:40:24,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:40:24,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:40:24,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:40:24,393 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:40:24,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24 WrapperNode [2020-10-19 18:40:24,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:40:24,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:40:24,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:40:24,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:40:24,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:40:24,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:40:24,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:40:24,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:40:24,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... [2020-10-19 18:40:24,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:40:24,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:40:24,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:40:24,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:40:24,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:40:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:40:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:40:24,724 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:40:24,724 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:40:24,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:24 BoogieIcfgContainer [2020-10-19 18:40:24,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:40:24,727 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:40:24,727 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:40:24,731 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:40:24,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:24,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:40:24" (1/3) ... [2020-10-19 18:40:24,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@234f8fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:40:24, skipping insertion in model container [2020-10-19 18:40:24,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:24,735 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:40:24" (2/3) ... [2020-10-19 18:40:24,735 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@234f8fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:40:24, skipping insertion in model container [2020-10-19 18:40:24,735 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:40:24,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:24" (3/3) ... [2020-10-19 18:40:24,737 INFO L373 chiAutomizerObserver]: Analyzing ICFG Parallel.c [2020-10-19 18:40:24,789 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:40:24,789 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:40:24,789 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:40:24,790 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:40:24,790 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:40:24,790 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:40:24,790 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:40:24,790 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:40:24,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:40:24,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:40:24,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:40:24,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:40:24,829 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:40:24,829 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:40:24,829 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:40:24,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:40:24,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:40:24,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:40:24,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:40:24,831 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:40:24,831 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:40:24,838 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L23-2true [2020-10-19 18:40:24,838 INFO L796 eck$LassoCheckResult]: Loop: 3#L23-2true assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 5#L23true assume main_~x~0 >= 0;main_~x~0 := main_~x~0 - 1; 3#L23-2true [2020-10-19 18:40:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:24,843 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:40:24,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:24,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662304630] [2020-10-19 18:40:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:24,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-19 18:40:24,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:24,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877489654] [2020-10-19 18:40:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:24,972 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-19 18:40:24,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:24,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480853211] [2020-10-19 18:40:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:24,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:24,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:25,055 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:40:25,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:40:25,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:40:25,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:40:25,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:40:25,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:40:25,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:40:25,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2020-10-19 18:40:25,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:40:25,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:40:25,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,267 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:40:25,268 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:40:25,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:25,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:40:25,291 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:40:25,291 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:25,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:40:25,331 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:40:25,332 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:25,360 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 18:40:25,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:40:25,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:40:25,416 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:40:25,421 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:40:25,422 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:40:25,422 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:40:25,422 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:40:25,422 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:40:25,423 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:40:25,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:40:25,423 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2020-10-19 18:40:25,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:40:25,424 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:40:25,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,491 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:40:25,497 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:25,516 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 [2020-10-19 18:40:25,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:25,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:25,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:25,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:40:25,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:40:25,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,571 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 [2020-10-19 18:40:25,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:25,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:25,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:25,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:40:25,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:40:25,578 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:40:25,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:25,619 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 Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:25,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:40:25,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:25,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:25,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:40:25,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:40:25,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:40:25,628 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:40:25,633 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:40:25,633 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:25,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:40:25,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:40:25,643 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:40:25,644 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,678 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:40:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:40:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:40:25,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:40:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:40:25,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:40:25,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:40:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:40:25,757 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 [2020-10-19 18:40:25,758 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-19 18:40:25,810 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-10-19 18:40:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:40:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:40:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-10-19 18:40:25,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-19 18:40:25,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:25,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-19 18:40:25,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:25,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-19 18:40:25,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:25,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2020-10-19 18:40:25,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:40:25,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 8 states and 11 transitions. [2020-10-19 18:40:25,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-19 18:40:25,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-19 18:40:25,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-10-19 18:40:25,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:40:25,828 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-10-19 18:40:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-10-19 18:40:25,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-10-19 18:40:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:40:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-19 18:40:25,859 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:40:25,860 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:40:25,860 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:40:25,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-19 18:40:25,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:40:25,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:40:25,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:40:25,861 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:40:25,862 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:40:25,862 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 65#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2020-10-19 18:40:25,862 INFO L796 eck$LassoCheckResult]: Loop: 61#L23 assume !(main_~x~0 >= 0);main_~y~0 := main_~y~0 - 1; 60#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2020-10-19 18:40:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:25,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-19 18:40:25,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:25,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66446568] [2020-10-19 18:40:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,874 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:25,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-19 18:40:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:25,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020838099] [2020-10-19 18:40:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,885 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-10-19 18:40:25,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:40:25,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182406289] [2020-10-19 18:40:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:40:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:40:25,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:40:25,899 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:40:25,939 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:40:25,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:40:25,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:40:25,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:40:25,939 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:40:25,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:25,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:40:25,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:40:25,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2020-10-19 18:40:25,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:40:25,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:40:25,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:25,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:26,019 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:40:26,019 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:26,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:26,037 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:40:26,042 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:26,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:26,088 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:40:26,094 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:26,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:40:26,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:26,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:40:26,197 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:40:26,295 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:40:26,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:40:26,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:40:26,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:40:26,296 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:40:26,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:40:26,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:40:26,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2020-10-19 18:40:26,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:40:26,297 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:40:26,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:26,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:26,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:26,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:40:26,366 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:40:26,366 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,382 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 [2020-10-19 18:40:26,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:26,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:26,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:26,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:40:26,388 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:40:26,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:40:26,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:40:26,441 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 [2020-10-19 18:40:26,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:26,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:26,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:26,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:40:26,448 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:40:26,448 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,486 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 [2020-10-19 18:40:26,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:40:26,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:40:26,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:40:26,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:40:26,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:40:26,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:40:26,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:40:26,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:40:26,494 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 18:40:26,494 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:40:26,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:40:26,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:40:26,497 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:40:26,497 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-19 18:40:26,519 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:40:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:40:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:40:26,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:40:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:40:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:40:26,554 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:40:26,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:40:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:40:26,600 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 [2020-10-19 18:40:26,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 18:40:26,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2020-10-19 18:40:26,632 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 [2020-10-19 18:40:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:40:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-19 18:40:26,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-19 18:40:26,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:26,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:40:26,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:26,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-19 18:40:26,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:40:26,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-10-19 18:40:26,636 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:40:26,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-10-19 18:40:26,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:40:26,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:40:26,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:40:26,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:40:26,637 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:40:26,637 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:40:26,637 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:40:26,637 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:40:26,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:40:26,639 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:40:26,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:40:26,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:40:26 BoogieIcfgContainer [2020-10-19 18:40:26,646 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:40:26,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:40:26,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:40:26,647 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:40:26,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:40:24" (3/4) ... [2020-10-19 18:40:26,651 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:40:26,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:40:26,654 INFO L168 Benchmark]: Toolchain (without parser) took 2493.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 953.2 MB in the beginning and 933.6 MB in the end (delta: 19.6 MB). Peak memory consumption was 150.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:26,654 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:40:26,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.17 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:26,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:40:26,657 INFO L168 Benchmark]: Boogie Preprocessor took 84.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:26,658 INFO L168 Benchmark]: RCFGBuilder took 214.51 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:26,659 INFO L168 Benchmark]: BuchiAutomizer took 1918.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 933.6 MB in the end (delta: 173.3 MB). Peak memory consumption was 173.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:40:26,659 INFO L168 Benchmark]: Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:40:26,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.17 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.50 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 214.51 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: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1918.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 933.6 MB in the end (delta: 173.3 MB). Peak memory consumption was 173.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 933.6 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 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...