./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-restricted-15/MinusUserDefined.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 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:35:31,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:35:31,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:35:31,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:35:31,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:35:31,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:35:31,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:35:31,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:35:31,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:35:31,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:35:31,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:35:31,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:35:31,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:35:31,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:35:31,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:35:31,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:35:31,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:35:31,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:35:31,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:35:31,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:35:31,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:35:31,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:35:31,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:35:31,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:35:31,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:35:31,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:35:31,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:35:31,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:35:31,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:35:31,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:35:31,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:35:31,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:35:31,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:35:31,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:35:31,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:35:31,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:35:31,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:35:31,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:35:31,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:35:31,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:35:31,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:35:31,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:35:31,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:35:31,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:35:31,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:35:31,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:35:31,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:35:31,884 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:35:31,884 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:35:31,884 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:35:31,884 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:35:31,884 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:35:31,885 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:35:31,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:35:31,885 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:35:31,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:35:31,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:35:31,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:35:31,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:35:31,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:35:31,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:35:31,888 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:35:31,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:35:31,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:35:31,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:35:31,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:35:31,889 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:35:31,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:35:31,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:35:31,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:35:31,890 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:35:31,892 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:35:31,893 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 -> /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 -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2020-10-20 06:35:32,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:35:32,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:35:32,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:35:32,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:35:32,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:35:32,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2020-10-20 06:35:32,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4484485/bbcc87e4675b47619e604d92633c2616/FLAG04073632a [2020-10-20 06:35:32,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:35:32,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2020-10-20 06:35:32,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4484485/bbcc87e4675b47619e604d92633c2616/FLAG04073632a [2020-10-20 06:35:33,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4484485/bbcc87e4675b47619e604d92633c2616 [2020-10-20 06:35:33,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:35:33,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:35:33,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:33,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:35:33,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:35:33,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8a7e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33, skipping insertion in model container [2020-10-20 06:35:33,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:35:33,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:35:33,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:33,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:35:33,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:35:33,406 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:35:33,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33 WrapperNode [2020-10-20 06:35:33,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:35:33,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:33,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:35:33,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:35:33,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:35:33,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:35:33,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:35:33,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:35:33,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (1/1) ... [2020-10-20 06:35:33,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:35:33,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:35:33,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:35:33,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:35:33,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (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 [2020-10-20 06:35:33,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:35:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:35:33,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:35:33,833 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:35:33,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:33 BoogieIcfgContainer [2020-10-20 06:35:33,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:35:33,844 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:35:33,844 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:35:33,850 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:35:33,851 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:33,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:35:33" (1/3) ... [2020-10-20 06:35:33,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25fa847a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:33, skipping insertion in model container [2020-10-20 06:35:33,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:33,855 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:35:33" (2/3) ... [2020-10-20 06:35:33,856 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25fa847a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:35:33, skipping insertion in model container [2020-10-20 06:35:33,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:35:33,856 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:33" (3/3) ... [2020-10-20 06:35:33,858 INFO L373 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2020-10-20 06:35:33,937 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:35:33,937 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:35:33,937 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:35:33,938 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:35:33,938 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:35:33,938 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:35:33,938 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:35:33,938 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:35:33,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:35:33,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-10-20 06:35:33,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:33,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:33,986 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:33,986 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:35:33,986 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:35:33,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-10-20 06:35:33,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2020-10-20 06:35:33,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:33,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:33,988 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-20 06:35:33,988 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 06:35:33,996 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-2true [2020-10-20 06:35:33,997 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-2true [2020-10-20 06:35:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-20 06:35:34,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:34,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455702499] [2020-10-20 06:35:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,135 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-10-20 06:35:34,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:34,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221105543] [2020-10-20 06:35:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-20 06:35:34,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:34,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180021353] [2020-10-20 06:35:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:34,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:34,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:34,264 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:34,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:34,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:34,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:34,266 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:34,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:34,267 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:34,267 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2020-10-20 06:35:34,267 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:34,267 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:34,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,468 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:34,469 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 [2020-10-20 06:35:34,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:34,500 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 06:35:34,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:34,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:35:34,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:34,606 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:34,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:34,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:34,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:34,607 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:34,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:34,612 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:34,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:34,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2020-10-20 06:35:34,613 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:34,613 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:34,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:34,755 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:34,761 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2020-10-20 06:35:34,773 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 [2020-10-20 06:35:34,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:34,776 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:34,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:34,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:34,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:34,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:34,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:34,789 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:34,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:34,798 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. 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 [2020-10-20 06:35:34,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:34,805 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:34,806 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:34,806 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-10-20 06:35:34,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:34,885 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:35:34,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:34,945 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 [2020-10-20 06:35:34,949 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2020-10-20 06:35:35,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 23 states and 39 transitions. Complement of second has 5 states. [2020-10-20 06:35:35,036 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 [2020-10-20 06:35:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 06:35:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2020-10-20 06:35:35,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2020-10-20 06:35:35,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-20 06:35:35,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-20 06:35:35,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:35,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2020-10-20 06:35:35,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:35,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2020-10-20 06:35:35,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:35,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-20 06:35:35,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2020-10-20 06:35:35,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:35,057 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2020-10-20 06:35:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2020-10-20 06:35:35,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-10-20 06:35:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:35:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2020-10-20 06:35:35,092 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-10-20 06:35:35,092 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2020-10-20 06:35:35,092 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:35:35,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2020-10-20 06:35:35,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:35,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:35,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:35,094 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:35:35,094 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:35,094 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2020-10-20 06:35:35,094 INFO L796 eck$LassoCheckResult]: Loop: 63#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 65#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2020-10-20 06:35:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2020-10-20 06:35:35,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325027609] [2020-10-20 06:35:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2020-10-20 06:35:35,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909183105] [2020-10-20 06:35:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,125 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,126 INFO L82 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2020-10-20 06:35:35,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:35,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381182979] [2020-10-20 06:35:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:35,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:35,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:35,183 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:35,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:35,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:35,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:35,184 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:35,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:35,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:35,185 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2020-10-20 06:35:35,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:35,185 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:35,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,310 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:35,310 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:35:35,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:35,322 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:35,334 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:35:35,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:35,390 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /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) [2020-10-20 06:35:35,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:35,451 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,584 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:35,587 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:35,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:35,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:35,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:35,587 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:35,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:35,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:35,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2020-10-20 06:35:35,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:35,588 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:35,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:35,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:35,713 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-20 06:35:35,729 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:35,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:35,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:35,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:35,742 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:35,742 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:35,751 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,800 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 [2020-10-20 06:35:35,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:35,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:35,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:35,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:35,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:35,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:35,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:35,812 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:35,817 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:35:35,817 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:35,823 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:35,825 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:35,825 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:35,826 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-20 06:35:35,862 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:35,910 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:35,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:35,982 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 [2020-10-20 06:35:35,982 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 06:35:36,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 7 states. [2020-10-20 06:35:36,022 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 [2020-10-20 06:35:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-10-20 06:35:36,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 06:35:36,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-20 06:35:36,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-20 06:35:36,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-10-20 06:35:36,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:36,032 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2020-10-20 06:35:36,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:36,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:35:36,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2020-10-20 06:35:36,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,036 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-10-20 06:35:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2020-10-20 06:35:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 06:35:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:35:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-10-20 06:35:36,041 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-10-20 06:35:36,041 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-10-20 06:35:36,042 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:35:36,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-10-20 06:35:36,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:36,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:35:36,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:35:36,044 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-10-20 06:35:36,044 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:35:36,045 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 127#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 128#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2020-10-20 06:35:36,045 INFO L796 eck$LassoCheckResult]: Loop: 130#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 131#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2020-10-20 06:35:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,046 INFO L82 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2020-10-20 06:35:36,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980217914] [2020-10-20 06:35:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:36,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980217914] [2020-10-20 06:35:36,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:35:36,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:35:36,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807155874] [2020-10-20 06:35:36,199 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:35:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2020-10-20 06:35:36,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:35:36,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299670438] [2020-10-20 06:35:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:35:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:35:36,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:35:36,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:35:36,241 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:36,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:36,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:36,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:36,241 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:35:36,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:36,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:36,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2020-10-20 06:35:36,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:36,242 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:36,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,325 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-20 06:35:36,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,332 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 [2020-10-20 06:35:36,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:35:36,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:35:36,376 INFO L160 nArgumentSynthesizer]: Using integer mode. 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) [2020-10-20 06:35:36,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:35:36,425 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,514 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:35:36,516 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:35:36,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:35:36,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:35:36,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:35:36,516 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:35:36,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,517 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:35:36,517 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:35:36,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2020-10-20 06:35:36,517 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:35:36,517 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:35:36,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:35:36,618 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:35:36,618 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,630 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 [2020-10-20 06:35:36,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,635 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:35:36,635 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:35:36,639 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 [2020-10-20 06:35:36,691 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 [2020-10-20 06:35:36,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:35:36,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:35:36,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:35:36,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:35:36,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:35:36,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:35:36,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:35:36,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:35:36,703 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-20 06:35:36,703 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) [2020-10-20 06:35:36,714 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:35:36,715 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:35:36,715 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:35:36,715 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:35:36,757 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:35:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:35:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:35:36,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:35:36,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:35:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:35:36,816 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 [2020-10-20 06:35:36,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-20 06:35:36,848 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 43 states and 65 transitions. Complement of second has 7 states. [2020-10-20 06:35:36,849 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 [2020-10-20 06:35:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:35:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 06:35:36,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-20 06:35:36,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2020-10-20 06:35:36,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2020-10-20 06:35:36,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:35:36,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2020-10-20 06:35:36,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:35:36,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2020-10-20 06:35:36,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-20 06:35:36,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-20 06:35:36,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2020-10-20 06:35:36,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:35:36,877 INFO L691 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2020-10-20 06:35:36,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2020-10-20 06:35:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2020-10-20 06:35:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-20 06:35:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-10-20 06:35:36,885 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-10-20 06:35:36,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:35:36,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:35:36,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:35:36,896 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 5 states. [2020-10-20 06:35:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:35:36,961 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-10-20 06:35:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:35:36,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-10-20 06:35:36,963 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:36,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-10-20 06:35:36,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:35:36,963 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:35:36,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:35:36,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:35:36,964 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:36,964 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:36,964 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:35:36,964 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:35:36,964 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:35:36,964 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:35:36,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:35:36,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:35:36 BoogieIcfgContainer [2020-10-20 06:35:36,973 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:35:36,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:35:36,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:35:36,974 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:35:36,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:35:33" (3/4) ... [2020-10-20 06:35:36,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:35:36,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:35:36,982 INFO L168 Benchmark]: Toolchain (without parser) took 3895.37 ms. Allocated memory was 37.7 MB in the beginning and 55.1 MB in the end (delta: 17.3 MB). Free memory was 10.7 MB in the beginning and 31.6 MB in the end (delta: -20.9 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:35:36,984 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 37.2 MB. Free memory was 14.8 MB in the beginning and 14.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.42 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 9.8 MB in the beginning and 28.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.91 ms. Allocated memory is still 45.1 MB. Free memory was 28.5 MB in the beginning and 27.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,987 INFO L168 Benchmark]: Boogie Preprocessor took 18.63 ms. Allocated memory is still 45.1 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,988 INFO L168 Benchmark]: RCFGBuilder took 376.25 ms. Allocated memory is still 45.1 MB. Free memory was 25.8 MB in the beginning and 16.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,989 INFO L168 Benchmark]: BuchiAutomizer took 3129.09 ms. Allocated memory was 46.7 MB in the beginning and 55.1 MB in the end (delta: 8.4 MB). Free memory was 28.8 MB in the beginning and 31.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:35:36,989 INFO L168 Benchmark]: Witness Printer took 6.15 ms. Allocated memory is still 55.1 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:35:36,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 37.2 MB. Free memory was 14.8 MB in the beginning and 14.8 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 315.42 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 9.8 MB in the beginning and 28.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.91 ms. Allocated memory is still 45.1 MB. Free memory was 28.5 MB in the beginning and 27.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.63 ms. Allocated memory is still 45.1 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 376.25 ms. Allocated memory is still 45.1 MB. Free memory was 25.8 MB in the beginning and 16.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 3129.09 ms. Allocated memory was 46.7 MB in the beginning and 55.1 MB in the end (delta: 8.4 MB). Free memory was 28.8 MB in the beginning and 31.6 MB in the end (delta: -2.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. * Witness Printer took 6.15 ms. Allocated memory is still 55.1 MB. Free memory is still 31.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y 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 3.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...