./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.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 fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:57:34,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:57:34,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:57:34,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:57:34,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:57:34,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:57:34,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:57:34,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:57:34,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:57:34,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:57:34,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:57:34,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:57:34,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:57:34,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:57:34,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:57:34,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:57:34,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:57:34,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:57:34,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:57:34,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:57:34,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:57:34,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:57:34,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:57:34,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:57:34,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:57:34,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:57:34,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:57:34,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:57:34,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:57:34,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:57:34,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:57:34,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:57:34,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:57:34,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:57:34,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:57:34,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:57:34,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:57:34,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:57:34,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:57:34,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:57:34,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:57:34,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:57:34,741 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:57:34,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:57:34,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:57:34,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:57:34,743 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:57:34,743 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:57:34,744 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:57:34,744 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:57:34,744 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:57:34,744 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:57:34,744 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:57:34,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:57:34,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:57:34,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:57:34,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:57:34,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:57:34,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:57:34,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:57:34,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:57:34,746 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:57:34,747 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:57:34,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:57:34,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:57:34,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:57:34,747 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:57:34,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:57:34,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:57:34,748 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:57:34,749 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:57:34,749 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 -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2019-11-28 02:57:35,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:57:35,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:57:35,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:57:35,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:57:35,097 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:57:35,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-11-28 02:57:35,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30107e6ad/1812edea1197495099e6b4932e134e31/FLAG84793fbef [2019-11-28 02:57:35,571 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:57:35,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-11-28 02:57:35,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30107e6ad/1812edea1197495099e6b4932e134e31/FLAG84793fbef [2019-11-28 02:57:35,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30107e6ad/1812edea1197495099e6b4932e134e31 [2019-11-28 02:57:35,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:57:35,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:57:36,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:36,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:57:36,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:57:36,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:36,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2727f677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36, skipping insertion in model container [2019-11-28 02:57:36,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:35" (1/1) ... [2019-11-28 02:57:36,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:57:36,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:57:36,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:36,230 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:57:36,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:57:36,265 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:57:36,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36 WrapperNode [2019-11-28 02:57:36,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:57:36,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:36,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:57:36,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:57:36,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:57:36,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:57:36,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:57:36,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:57:36,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2019-11-28 02:57:36,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:57:36,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:57:36,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:57:36,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:57:36,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (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 [2019-11-28 02:57:36,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:57:36,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:57:36,583 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:57:36,583 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:57:36,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36 BoogieIcfgContainer [2019-11-28 02:57:36,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:57:36,585 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:57:36,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:57:36,588 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:57:36,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:35" (1/3) ... [2019-11-28 02:57:36,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@797e346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:36, skipping insertion in model container [2019-11-28 02:57:36,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (2/3) ... [2019-11-28 02:57:36,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@797e346b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:36, skipping insertion in model container [2019-11-28 02:57:36,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:57:36,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36" (3/3) ... [2019-11-28 02:57:36,592 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2019-11-28 02:57:36,637 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:57:36,637 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:57:36,638 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:57:36,638 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:57:36,638 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:57:36,638 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:57:36,638 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:57:36,638 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:57:36,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:36,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:36,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:36,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:36,675 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:36,675 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:36,675 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:57:36,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:57:36,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:36,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:36,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:36,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:57:36,677 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:57:36,683 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L21-2true [2019-11-28 02:57:36,683 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 9#L21-2true [2019-11-28 02:57:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,688 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:57:36,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813787210] [2019-11-28 02:57:36,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-28 02:57:36,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040688204] [2019-11-28 02:57:36,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,796 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-28 02:57:36,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:36,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166135631] [2019-11-28 02:57:36,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:36,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:36,922 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:36,923 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:36,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:36,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:36,924 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:36,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:36,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:36,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:36,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-11-28 02:57:36,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:36,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:36,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,122 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:37,122 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) [2019-11-28 02:57:37,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,130 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 [2019-11-28 02:57:37,141 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:37,142 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,151 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:37,163 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,171 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:37,189 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:37,208 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:37,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:37,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:37,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:37,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:37,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:37,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:37,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-11-28 02:57:37,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:37,210 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:37,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,309 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:37,314 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:37,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:37,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:37,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:37,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:37,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:37,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:37,337 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) [2019-11-28 02:57:37,353 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:37,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:37,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:37,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:37,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:37,360 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:37,360 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,366 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 [2019-11-28 02:57:37,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:37,382 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:37,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:37,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:37,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:37,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:37,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:37,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:37,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:37,395 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:57:37,395 INFO L444 ModelExtractionUtils]: 1 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 [2019-11-28 02:57:37,415 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:37,416 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:37,416 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:37,417 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2019-11-28 02:57:37,422 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:57:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:37,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:37,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:37,473 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:37,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:37,512 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 [2019-11-28 02:57:37,513 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-28 02:57:37,581 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 39 transitions. Complement of second has 7 states. [2019-11-28 02:57:37,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:57:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-11-28 02:57:37,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-28 02:57:37,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:37,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-28 02:57:37,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:37,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-28 02:57:37,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:37,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2019-11-28 02:57:37,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:37,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2019-11-28 02:57:37,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-28 02:57:37,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:57:37,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-11-28 02:57:37,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:37,598 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-28 02:57:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-11-28 02:57:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-28 02:57:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-28 02:57:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-28 02:57:37,624 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-28 02:57:37,624 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-28 02:57:37,624 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:57:37,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-28 02:57:37,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:37,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:37,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:37,626 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:57:37,626 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:37,626 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-11-28 02:57:37,626 INFO L796 eck$LassoCheckResult]: Loop: 80#L18 assume !(main_~q~0 < main_~p~0); 74#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 75#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-11-28 02:57:37,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:37,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-28 02:57:37,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:37,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359384972] [2019-11-28 02:57:37,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-28 02:57:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:37,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361885810] [2019-11-28 02:57:37,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:37,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-28 02:57:37,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:37,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884440895] [2019-11-28 02:57:37,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:37,674 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:37,706 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:37,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:37,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:37,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:37,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:57:37,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,708 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:37,708 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:37,708 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-11-28 02:57:37,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:37,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:37,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,775 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:37,775 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,783 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:37,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,811 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 [2019-11-28 02:57:37,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:57:37,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:37,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:57:37,834 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:57:37,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-28 02:57:37,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:57:37,977 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:57:37,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:57:37,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:57:37,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:57:37,978 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:57:37,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:37,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:57:37,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:57:37,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-11-28 02:57:37,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:57:37,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:57:37,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:37,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:57:38,057 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:57:38,057 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) [2019-11-28 02:57:38,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:38,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:38,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:38,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:38,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:38,081 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:38,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:38,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:38,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:38,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:38,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:38,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:38,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:38,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:57:38,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:57:38,125 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:38,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 02:57:38,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:57:38,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:57:38,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:57:38,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:57:38,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:57:38,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:57:38,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:57:38,142 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:57:38,145 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-28 02:57:38,145 INFO L444 ModelExtractionUtils]: 2 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:57:38,158 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:57:38,158 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:57:38,159 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:57:38,159 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2019-11-28 02:57:38,161 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:57:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:38,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:57:38,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:38,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:57:38,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:57:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:38,226 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 [2019-11-28 02:57:38,227 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-28 02:57:38,265 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2019-11-28 02:57:38,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 02:57:38,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:57:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-28 02:57:38,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-28 02:57:38,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:38,267 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-28 02:57:38,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:38,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-28 02:57:38,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:57:38,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2019-11-28 02:57:38,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:38,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2019-11-28 02:57:38,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 02:57:38,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 02:57:38,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2019-11-28 02:57:38,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:57:38,274 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-11-28 02:57:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2019-11-28 02:57:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 02:57:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 02:57:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2019-11-28 02:57:38,282 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-11-28 02:57:38,282 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-11-28 02:57:38,282 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:57:38,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2019-11-28 02:57:38,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:57:38,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:57:38,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:57:38,286 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:57:38,286 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:57:38,286 INFO L794 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 151#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 157#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-11-28 02:57:38,286 INFO L796 eck$LassoCheckResult]: Loop: 146#L21 assume !(main_~p~0 < main_~q~0); 147#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 160#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-11-28 02:57:38,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:38,287 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-28 02:57:38,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:38,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552373691] [2019-11-28 02:57:38,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:57:38,311 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:57:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:57:38,311 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-28 02:57:38,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:57:38,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098407021] [2019-11-28 02:57:38,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:57:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:57:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:57:38,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098407021] [2019-11-28 02:57:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:57:38,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:57:38,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840687821] [2019-11-28 02:57:38,383 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 02:57:38,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:57:38,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:57:38,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:57:38,387 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-28 02:57:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:57:38,410 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-11-28 02:57:38,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:57:38,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2019-11-28 02:57:38,412 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:38,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-28 02:57:38,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-28 02:57:38,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-28 02:57:38,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-28 02:57:38,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:57:38,413 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:38,414 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:38,414 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 02:57:38,414 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:57:38,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-28 02:57:38,414 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-28 02:57:38,414 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-28 02:57:38,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:38 BoogieIcfgContainer [2019-11-28 02:57:38,421 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:57:38,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:57:38,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:57:38,422 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:57:38,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:36" (3/4) ... [2019-11-28 02:57:38,426 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 02:57:38,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:57:38,429 INFO L168 Benchmark]: Toolchain (without parser) took 2428.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 959.0 MB in the beginning and 923.5 MB in the end (delta: 35.5 MB). Peak memory consumption was 179.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,430 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:38,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,432 INFO L168 Benchmark]: Boogie Preprocessor took 21.33 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,433 INFO L168 Benchmark]: RCFGBuilder took 204.31 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,434 INFO L168 Benchmark]: BuchiAutomizer took 1836.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.5 MB in the end (delta: 196.8 MB). Peak memory consumption was 196.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:57:38,434 INFO L168 Benchmark]: Witness Printer took 4.80 ms. Allocated memory is still 1.2 GB. Free memory is still 923.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:57:38,438 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.0 MB in the beginning and 948.3 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 90.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -192.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.33 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 204.31 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1836.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 923.5 MB in the end (delta: 196.8 MB). Peak memory consumption was 196.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.80 ms. Allocated memory is still 1.2 GB. Free memory is still 923.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 22 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...