./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/PastaA10.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-restricted-15/PastaA10.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 eb84f41e050e85d4fc46b55b68b36040bcbf2911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:42:46,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:42:46,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:42:46,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:42:46,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:42:46,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:42:46,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:42:46,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:42:46,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:42:46,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:42:46,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:42:46,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:42:46,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:42:46,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:42:46,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:42:46,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:42:46,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:42:46,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:42:46,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:42:46,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:42:46,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:42:46,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:42:46,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:42:46,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:42:46,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:42:46,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:42:46,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:42:46,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:42:46,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:42:46,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:42:46,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:42:46,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:42:46,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:42:46,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:42:46,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:42:46,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:42:46,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:42:46,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:42:46,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:42:46,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:42:46,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:42:46,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:42:46,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:42:46,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:42:46,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:42:46,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:42:46,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:42:46,750 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:42:46,750 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:42:46,751 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:42:46,751 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:42:46,751 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:42:46,753 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:42:46,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:42:46,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:42:46,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:42:46,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:42:46,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:42:46,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:42:46,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:42:46,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:42:46,756 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:42:46,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:42:46,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:42:46,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:42:46,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:42:46,757 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:42:46,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:42:46,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:42:46,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:42:46,758 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:42:46,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:42:46,761 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 -> eb84f41e050e85d4fc46b55b68b36040bcbf2911 [2020-10-19 18:42:47,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:42:47,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:42:47,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:42:47,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:42:47,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:42:47,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/PastaA10.c [2020-10-19 18:42:47,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76de4ab3c/cf74ec2828424a848bb9b78412bea06f/FLAG1c269c656 [2020-10-19 18:42:47,627 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:42:47,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/PastaA10.c [2020-10-19 18:42:47,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76de4ab3c/cf74ec2828424a848bb9b78412bea06f/FLAG1c269c656 [2020-10-19 18:42:48,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76de4ab3c/cf74ec2828424a848bb9b78412bea06f [2020-10-19 18:42:48,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:42:48,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:42:48,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:48,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:42:48,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:42:48,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b7cba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48, skipping insertion in model container [2020-10-19 18:42:48,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:42:48,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:42:48,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:48,309 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:42:48,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:42:48,358 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:42:48,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48 WrapperNode [2020-10-19 18:42:48,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:42:48,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:48,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:42:48,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:42:48,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:42:48,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:42:48,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:42:48,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:42:48,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (1/1) ... [2020-10-19 18:42:48,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:42:48,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:42:48,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:42:48,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:42:48,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (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 18:42:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:42:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:42:48,785 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:42:48,785 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:42:48,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:48 BoogieIcfgContainer [2020-10-19 18:42:48,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:42:48,788 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:42:48,788 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:42:48,792 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:42:48,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:48,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:42:48" (1/3) ... [2020-10-19 18:42:48,794 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@154f6780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:48, skipping insertion in model container [2020-10-19 18:42:48,795 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:48,795 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:42:48" (2/3) ... [2020-10-19 18:42:48,795 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@154f6780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:42:48, skipping insertion in model container [2020-10-19 18:42:48,795 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:42:48,796 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:48" (3/3) ... [2020-10-19 18:42:48,797 INFO L373 chiAutomizerObserver]: Analyzing ICFG PastaA10.c [2020-10-19 18:42:48,853 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:42:48,853 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:42:48,853 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:42:48,853 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:42:48,853 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:42:48,854 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:42:48,854 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:42:48,854 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:42:48,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:42:48,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:48,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:48,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:48,899 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:48,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:48,900 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:42:48,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-10-19 18:42:48,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:48,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:48,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:48,901 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-10-19 18:42:48,902 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:48,909 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L12-2true [2020-10-19 18:42:48,909 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~x~0 != main_~y~0); 5#L12true assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 3#L12-2true [2020-10-19 18:42:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-10-19 18:42:48,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:48,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533906080] [2020-10-19 18:42:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,009 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,025 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:49,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-10-19 18:42:49,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:49,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096447559] [2020-10-19 18:42:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,047 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:49,050 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-10-19 18:42:49,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:49,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001959345] [2020-10-19 18:42:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,058 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:49,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:49,064 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:49,177 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:49,178 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:49,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:49,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:49,179 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:49,179 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:49,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:49,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2020-10-19 18:42:49,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:49,181 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:49,226 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 18:42:49,245 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 18:42:49,259 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 18:42:49,346 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:49,347 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) [2020-10-19 18:42:49,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:49,359 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,371 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:49,372 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 18:42:49,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:49,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:49,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:49,405 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 18:42:49,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:49,438 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 18:42:49,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:49,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:49,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:49,614 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:49,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:49,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:49,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:49,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:49,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:49,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:49,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2020-10-19 18:42:49,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:49,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:49,620 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 18:42:49,626 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 18:42:49,631 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 18:42:49,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:49,697 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 18:42:49,712 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 18:42:49,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:49,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:49,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:49,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:49,722 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:49,723 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,732 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 18:42:49,773 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 [2020-10-19 18:42:49,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:49,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:49,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:49,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:49,780 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:49,780 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:42:49,787 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,816 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 18:42:49,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:49,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:49,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:49,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:49,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:49,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:49,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:42:49,824 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:49,834 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-19 18:42:49,834 INFO L444 ModelExtractionUtils]: 0 out of 4 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:49,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:49,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:49,844 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:49,844 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-10-19 18:42:49,879 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:49,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:49,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:49,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:49,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:49,940 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 18:42:49,961 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 18:42:49,963 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-10-19 18:42:50,025 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2020-10-19 18:42:50,026 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 18:42:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-19 18:42:50,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-10-19 18:42:50,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-19 18:42:50,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-10-19 18:42:50,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2020-10-19 18:42:50,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:50,046 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-10-19 18:42:50,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-19 18:42:50,049 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-10-19 18:42:50,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-10-19 18:42:50,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:50,051 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:42:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-10-19 18:42:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-10-19 18:42:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 18:42:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-10-19 18:42:50,087 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:42:50,088 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-10-19 18:42:50,088 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:42:50,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-10-19 18:42:50,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:50,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:50,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:50,090 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 18:42:50,090 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:50,091 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L12-2 assume !!(main_~x~0 != main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2020-10-19 18:42:50,091 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~x~0 != main_~y~0); 64#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 63#L12-2 [2020-10-19 18:42:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,091 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-10-19 18:42:50,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329809840] [2020-10-19 18:42:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,106 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2020-10-19 18:42:50,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276027601] [2020-10-19 18:42:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,119 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2020-10-19 18:42:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744167677] [2020-10-19 18:42:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:50,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744167677] [2020-10-19 18:42:50,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914982714] [2020-10-19 18:42:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:42:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:50,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:42:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:50,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:42:50,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:42:50,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567522043] [2020-10-19 18:42:50,301 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:50,301 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:50,302 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:50,302 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:50,302 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:50,302 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:50,302 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:50,302 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:50,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2020-10-19 18:42:50,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:50,304 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:50,306 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 18:42:50,310 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 18:42:50,321 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 18:42:50,373 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:50,373 INFO L404 LassoAnalysis]: Checking for nontermination... 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 18:42:50,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:50,385 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 18:42:50,391 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:50,391 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:50,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:50,441 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 18:42:50,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:50,486 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 18:42:50,656 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:50,659 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:50,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:50,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:50,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:50,659 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:50,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:50,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:50,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:50,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2020-10-19 18:42:50,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:50,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:50,662 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 18:42:50,673 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 18:42:50,678 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 18:42:50,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:50,723 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) [2020-10-19 18:42:50,745 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 18:42:50,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:50,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:50,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:50,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:50,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:50,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:42:50,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:50,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:50,764 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:42:50,765 INFO L444 ModelExtractionUtils]: 0 out of 4 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:50,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:50,781 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:50,781 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:50,781 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:50,817 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:50,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:50,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:50,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:50,867 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:50,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:50,868 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 18:42:50,869 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 18:42:50,869 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-10-19 18:42:50,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2020-10-19 18:42:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-10-19 18:42:50,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-10-19 18:42:50,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-19 18:42:50,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-10-19 18:42:50,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:50,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-10-19 18:42:50,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:50,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-10-19 18:42:50,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-10-19 18:42:50,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-19 18:42:50,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-10-19 18:42:50,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:50,902 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-19 18:42:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-10-19 18:42:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-19 18:42:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:42:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2020-10-19 18:42:50,906 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-10-19 18:42:50,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:50,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:42:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:42:50,912 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2020-10-19 18:42:50,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:50,948 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-10-19 18:42:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:42:50,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2020-10-19 18:42:50,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:50,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2020-10-19 18:42:50,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-10-19 18:42:50,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-10-19 18:42:50,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-10-19 18:42:50,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:50,951 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-10-19 18:42:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-10-19 18:42:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-10-19 18:42:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:42:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-10-19 18:42:50,953 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-19 18:42:50,953 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-10-19 18:42:50,953 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:42:50,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-10-19 18:42:50,954 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:50,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:50,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:50,955 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-19 18:42:50,955 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:50,955 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L12-2 assume !!(main_~x~0 != main_~y~0); 154#L12 [2020-10-19 18:42:50,955 INFO L796 eck$LassoCheckResult]: Loop: 154#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 153#L12-2 assume !!(main_~x~0 != main_~y~0); 154#L12 [2020-10-19 18:42:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-10-19 18:42:50,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039668459] [2020-10-19 18:42:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,965 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-10-19 18:42:50,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490107325] [2020-10-19 18:42:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,974 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,975 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2020-10-19 18:42:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:50,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458266008] [2020-10-19 18:42:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:50,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:50,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:51,005 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:51,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:51,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:51,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:51,006 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:51,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:51,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:51,007 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:51,007 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2020-10-19 18:42:51,007 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:51,007 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:51,009 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 18:42:51,019 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 18:42:51,022 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 18:42:51,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:51,101 INFO L404 LassoAnalysis]: Checking for nontermination... 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) [2020-10-19 18:42:51,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:51,113 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 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 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 18:42:51,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:51,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:42:53,256 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:53,258 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:53,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:53,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:53,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:53,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:53,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:53,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:53,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:53,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2020-10-19 18:42:53,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:53,259 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:53,261 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 18:42:53,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:42:53,273 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 18:42:53,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:53,349 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:53,370 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 18:42:53,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:53,372 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:53,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:53,373 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:42:53,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:53,375 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 18:42:53,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:53,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:53,388 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:42:53,389 INFO L444 ModelExtractionUtils]: 0 out of 4 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:53,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:53,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:53,408 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:53,409 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:53,447 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:53,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:53,475 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:53,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:53,506 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 18:42:53,507 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 18:42:53,507 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-10-19 18:42:53,520 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2020-10-19 18:42:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-10-19 18:42:53,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-19 18:42:53,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:53,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:42:53,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:53,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2020-10-19 18:42:53,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:53,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-10-19 18:42:53,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:53,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2020-10-19 18:42:53,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-10-19 18:42:53,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-10-19 18:42:53,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2020-10-19 18:42:53,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:42:53,525 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-10-19 18:42:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2020-10-19 18:42:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-10-19 18:42:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:42:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2020-10-19 18:42:53,527 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-10-19 18:42:53,527 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-10-19 18:42:53,527 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:42:53,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2020-10-19 18:42:53,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:42:53,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:42:53,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:42:53,529 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-10-19 18:42:53,529 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:42:53,530 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L12-2 assume !!(main_~x~0 != main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!(main_~x~0 != main_~y~0); 206#L12 [2020-10-19 18:42:53,530 INFO L796 eck$LassoCheckResult]: Loop: 206#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 208#L12-2 assume !!(main_~x~0 != main_~y~0); 206#L12 [2020-10-19 18:42:53,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-10-19 18:42:53,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:53,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805680992] [2020-10-19 18:42:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:53,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:53,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:53,543 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-10-19 18:42:53,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:53,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425661461] [2020-10-19 18:42:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:53,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:42:53,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:42:53,555 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:42:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2020-10-19 18:42:53,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:42:53,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468613841] [2020-10-19 18:42:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:42:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:42:53,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468613841] [2020-10-19 18:42:53,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:42:53,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:42:53,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928633940] [2020-10-19 18:42:53,607 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:53,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:53,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:53,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:53,607 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:42:53,608 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:53,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:53,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:53,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2020-10-19 18:42:53,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:53,609 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:53,611 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 18:42:53,617 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 18:42:53,626 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 18:42:53,692 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:53,692 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:53,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:53,705 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:53,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:42:53,709 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:53,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:42:53,768 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:53,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:42:53,828 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:55,943 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:42:55,945 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:42:55,946 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:42:55,946 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:42:55,946 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:42:55,946 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:42:55,946 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:55,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:42:55,946 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:42:55,946 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2020-10-19 18:42:55,946 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:42:55,947 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:42:55,948 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 18:42:55,954 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 18:42:55,962 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 18:42:56,033 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:42:56,034 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:56,051 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 18:42:56,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:56,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:56,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:42:56,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:56,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:42:56,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:42:56,061 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:56,097 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 18:42:56,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:42:56,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:42:56,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:42:56,099 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-19 18:42:56,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:42:56,101 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-19 18:42:56,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:56,105 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:42:56,112 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:42:56,112 INFO L444 ModelExtractionUtils]: 0 out of 4 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:42:56,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:42:56,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:42:56,152 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:42:56,152 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~y~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:42:56,186 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:42:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,271 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,309 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 18:42:56,309 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 18:42:56,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-19 18:42:56,315 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2020-10-19 18:42:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-10-19 18:42:56,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:42:56,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:56,317 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:42:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,374 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 18:42:56,374 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:56,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-19 18:42:56,381 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2020-10-19 18:42:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2020-10-19 18:42:56,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:42:56,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:56,382 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:42:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:42:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:42:56,404 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:42:56,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:42:56,426 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 18:42:56,426 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:42:56,427 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-10-19 18:42:56,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2020-10-19 18:42:56,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:42:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:42:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-10-19 18:42:56,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-10-19 18:42:56,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:56,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-10-19 18:42:56,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:56,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-10-19 18:42:56,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:42:56,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-10-19 18:42:56,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:56,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-10-19 18:42:56,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:42:56,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:42:56,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:42:56,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:56,449 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:56,449 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:56,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:42:56,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:42:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:42:56,449 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-10-19 18:42:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:42:56,450 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 18:42:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:42:56,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 18:42:56,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:56,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:42:56,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:42:56,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:42:56,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:42:56,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:42:56,451 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:56,451 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:56,451 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:42:56,451 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:42:56,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:42:56,451 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:42:56,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:42:56,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:42:56 BoogieIcfgContainer [2020-10-19 18:42:56,457 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:42:56,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:42:56,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:42:56,458 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:42:56,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:42:48" (3/4) ... [2020-10-19 18:42:56,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:42:56,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:42:56,465 INFO L168 Benchmark]: Toolchain (without parser) took 8401.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.4 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:56,466 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:56,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.72 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 945.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:56,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.34 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:56,468 INFO L168 Benchmark]: Boogie Preprocessor took 95.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:56,469 INFO L168 Benchmark]: RCFGBuilder took 282.71 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:56,470 INFO L168 Benchmark]: BuchiAutomizer took 7669.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:42:56,470 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:42:56,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.72 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 945.2 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 47.34 ms. Allocated memory is still 1.0 GB. Free memory is still 945.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 282.71 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7669.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -44.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One deterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...