./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/PastaA10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 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-f470102 [2019-12-07 14:06:47,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:06:47,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:06:47,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:06:47,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:06:47,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:06:47,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:06:47,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:06:47,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:06:47,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:06:47,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:06:47,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:06:47,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:06:47,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:06:47,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:06:47,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:06:47,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:06:47,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:06:47,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:06:47,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:06:47,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:06:47,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:06:47,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:06:47,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:06:47,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:06:47,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:06:47,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:06:47,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:06:47,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:06:47,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:06:47,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:06:47,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:06:47,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:06:47,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:06:47,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:06:47,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:06:47,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:06:47,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:06:47,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:06:47,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:06:47,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:06:47,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 14:06:47,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:06:47,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:06:47,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:06:47,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:06:47,711 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:06:47,711 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 14:06:47,711 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 14:06:47,711 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 14:06:47,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 14:06:47,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 14:06:47,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:06:47,713 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 14:06:47,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:06:47,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:06:47,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:06:47,714 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 14:06:47,714 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 14:06:47,715 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb84f41e050e85d4fc46b55b68b36040bcbf2911 [2019-12-07 14:06:47,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:06:47,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:06:47,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:06:47,828 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:06:47,829 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:06:47,829 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/PastaA10.c [2019-12-07 14:06:47,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/data/cd65225bc/731fed76c3724d89a78348294ac11b84/FLAGca89f7a1d [2019-12-07 14:06:48,185 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:06:48,186 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/sv-benchmarks/c/termination-restricted-15/PastaA10.c [2019-12-07 14:06:48,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/data/cd65225bc/731fed76c3724d89a78348294ac11b84/FLAGca89f7a1d [2019-12-07 14:06:48,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/data/cd65225bc/731fed76c3724d89a78348294ac11b84 [2019-12-07 14:06:48,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:06:48,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:06:48,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:06:48,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:06:48,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:06:48,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4098f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48, skipping insertion in model container [2019-12-07 14:06:48,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:06:48,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:06:48,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:06:48,329 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:06:48,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:06:48,379 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:06:48,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48 WrapperNode [2019-12-07 14:06:48,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:06:48,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:06:48,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:06:48,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:06:48,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:06:48,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:06:48,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:06:48,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:06:48,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... [2019-12-07 14:06:48,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:06:48,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:06:48,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:06:48,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:06:48,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:06:48,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:06:48,532 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:06:48,532 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 14:06:48,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:06:48 BoogieIcfgContainer [2019-12-07 14:06:48,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:06:48,533 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 14:06:48,533 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 14:06:48,535 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 14:06:48,536 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:06:48,536 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 02:06:48" (1/3) ... [2019-12-07 14:06:48,536 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@171856f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:06:48, skipping insertion in model container [2019-12-07 14:06:48,536 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:06:48,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:06:48" (2/3) ... [2019-12-07 14:06:48,537 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@171856f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 02:06:48, skipping insertion in model container [2019-12-07 14:06:48,537 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 14:06:48,537 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:06:48" (3/3) ... [2019-12-07 14:06:48,538 INFO L371 chiAutomizerObserver]: Analyzing ICFG PastaA10.c [2019-12-07 14:06:48,566 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 14:06:48,566 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 14:06:48,567 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 14:06:48,567 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:06:48,567 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:06:48,567 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 14:06:48,567 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:06:48,567 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 14:06:48,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 14:06:48,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:48,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:06:48,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:06:48,592 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:06:48,592 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:06:48,592 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 14:06:48,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 14:06:48,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:48,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:06:48,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:06:48,593 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 14:06:48,593 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:06:48,598 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L12-2true [2019-12-07 14:06:48,598 INFO L796 eck$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 [2019-12-07 14:06:48,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 14:06:48,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:48,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274981499] [2019-12-07 14:06:48,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,670 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:48,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 14:06:48,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:48,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029619710] [2019-12-07 14:06:48,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,681 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:48,682 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 14:06:48,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:48,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342855523] [2019-12-07 14:06:48,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:48,690 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:48,728 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:48,729 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:48,729 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:48,729 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:48,729 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:06:48,729 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:48,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:48,730 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2019-12-07 14:06:48,730 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:48,730 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:48,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:48,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:48,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:48,810 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:48,811 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:48,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:48,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:06:48,823 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 /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:48,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:48,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:06:48,831 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 /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:48,836 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:06:48,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:48,967 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:06:48,969 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:48,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:48,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:48,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:48,969 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:06:48,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:48,969 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:48,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:48,969 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration1_Loop [2019-12-07 14:06:48,969 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:48,969 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:48,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:48,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:48,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,013 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:49,018 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,022 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 [2019-12-07 14:06:49,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:49,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:49,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:06:49,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:49,030 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:06:49,030 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:06:49,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,040 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 [2019-12-07 14:06:49,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:49,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:49,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:06:49,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:49,044 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:06:49,044 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:06:49,049 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,053 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 [2019-12-07 14:06:49,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:49,055 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:06:49,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:49,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:06:49,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:49,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:06:49,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:06:49,059 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:06:49,063 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 14:06:49,064 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:06:49,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:06:49,068 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:06:49,068 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 [] [2019-12-07 14:06:49,072 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:06:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,101 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:49,101 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,108 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:49,108 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:49,120 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 14:06:49,121 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-12-07 14:06:49,148 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-12-07 14:06:49,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 14:06:49,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 14:06:49,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 14:06:49,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 14:06:49,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-12-07 14:06:49,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:49,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-12-07 14:06:49,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 14:06:49,157 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 14:06:49,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-12-07 14:06:49,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:06:49,158 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 14:06:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-12-07 14:06:49,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 14:06:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 14:06:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 14:06:49,174 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 14:06:49,174 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 14:06:49,174 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 14:06:49,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 14:06:49,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:49,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:06:49,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:06:49,175 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 14:06:49,175 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:06:49,175 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L12-2 assume !!(main_~x~0 != main_~y~0); 67#L12 assume !(main_~x~0 > main_~y~0);main_~x~0 := 1 + main_~x~0; 63#L12-2 [2019-12-07 14:06:49,175 INFO L796 eck$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 [2019-12-07 14:06:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 14:06:49,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110846038] [2019-12-07 14:06:49,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,182 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-12-07 14:06:49,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414118031] [2019-12-07 14:06:49,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,187 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,187 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-12-07 14:06:49,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339150326] [2019-12-07 14:06:49,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:49,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339150326] [2019-12-07 14:06:49,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080068339] [2019-12-07 14:06:49,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:06:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,234 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:49,235 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:49,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 14:06:49,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 14:06:49,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776218322] [2019-12-07 14:06:49,263 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:49,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:49,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:49,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:49,263 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:06:49,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,264 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:49,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:49,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2019-12-07 14:06:49,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:49,264 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:49,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:49,301 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:49,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:49,307 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:06:49,307 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 /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:49,313 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:06:49,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:49,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:06:49,451 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:49,452 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:49,452 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:49,452 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:49,452 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:06:49,452 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,452 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:49,452 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:49,452 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration2_Loop [2019-12-07 14:06:49,452 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:49,452 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:49,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,483 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:49,483 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,486 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 14:06:49,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:49,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:06:49,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:49,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:06:49,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:49,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 14:06:49,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:06:49,494 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:06:49,499 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:06:49,499 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/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 [2019-12-07 14:06:49,502 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:06:49,502 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:06:49,502 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:06:49,503 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 [] [2019-12-07 14:06:49,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:06:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,519 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:49,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:49,522 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:49,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:49,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 14:06:49,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 14:06:49,531 INFO L76 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. [2019-12-07 14:06:49,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 14:06:49,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 14:06:49,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 14:06:49,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 14:06:49,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:49,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-12-07 14:06:49,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:49,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 14:06:49,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 14:06:49,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:06:49,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-12-07 14:06:49,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:06:49,534 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 14:06:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-12-07 14:06:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 14:06:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 14:06:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-12-07 14:06:49,536 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-12-07 14:06:49,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:06:49,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:06:49,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:06:49,539 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-12-07 14:06:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:06:49,556 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-12-07 14:06:49,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:06:49,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-12-07 14:06:49,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:49,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-12-07 14:06:49,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 14:06:49,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 14:06:49,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-12-07 14:06:49,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:06:49,558 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-12-07 14:06:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-12-07 14:06:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-12-07 14:06:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:06:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-12-07 14:06:49,559 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 14:06:49,559 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-12-07 14:06:49,559 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 14:06:49,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-12-07 14:06:49,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:49,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:06:49,560 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:06:49,560 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 14:06:49,560 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:06:49,560 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L12-2 assume !!(main_~x~0 != main_~y~0); 154#L12 [2019-12-07 14:06:49,560 INFO L796 eck$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 [2019-12-07 14:06:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 14:06:49,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483548196] [2019-12-07 14:06:49,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,566 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:49,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-12-07 14:06:49,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316443069] [2019-12-07 14:06:49,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,573 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-12-07 14:06:49,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:49,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920956991] [2019-12-07 14:06:49,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:49,582 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:49,593 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:49,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:49,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:49,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:49,594 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:06:49,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:49,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:49,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:49,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2019-12-07 14:06:49,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:49,595 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:49,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:49,653 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:49,653 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/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 [2019-12-07 14:06:49,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:49,659 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/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 [2019-12-07 14:06:49,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:06:49,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:51,820 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:06:51,821 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:51,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:51,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:51,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:51,822 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:06:51,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:51,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:51,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:51,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration3_Loop [2019-12-07 14:06:51,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:51,822 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:51,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:51,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:51,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:51,880 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:51,880 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:51,883 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 [2019-12-07 14:06:51,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:51,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:06:51,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:51,885 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:06:51,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:51,887 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:06:51,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:06:51,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:06:51,893 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:06:51,894 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:51,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:06:51,896 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:06:51,897 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:06:51,897 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 [] [2019-12-07 14:06:51,899 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:06:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:51,912 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:51,913 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:51,916 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:51,916 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:51,928 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 [2019-12-07 14:06:51,928 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 14:06:51,935 INFO L76 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. [2019-12-07 14:06:51,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 14:06:51,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 14:06:51,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:51,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:06:51,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:51,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 14:06:51,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:51,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-12-07 14:06:51,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:51,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-12-07 14:06:51,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 14:06:51,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 14:06:51,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-12-07 14:06:51,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 14:06:51,937 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 14:06:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-12-07 14:06:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 14:06:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 14:06:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 14:06:51,938 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 14:06:51,938 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 14:06:51,938 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 14:06:51,939 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-12-07 14:06:51,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 14:06:51,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 14:06:51,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 14:06:51,939 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-12-07 14:06:51,939 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 14:06:51,939 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L12-2 assume !!(main_~x~0 != main_~y~0); 204#L12 assume main_~x~0 > main_~y~0;main_~y~0 := 1 + main_~y~0; 205#L12-2 assume !!(main_~x~0 != main_~y~0); 206#L12 [2019-12-07 14:06:51,939 INFO L796 eck$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 [2019-12-07 14:06:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-12-07 14:06:51,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:51,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356385718] [2019-12-07 14:06:51,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:51,946 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-12-07 14:06:51,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:51,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362435692] [2019-12-07 14:06:51,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:06:51,951 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:06:51,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-12-07 14:06:51,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:06:51,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115939132] [2019-12-07 14:06:51,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:06:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:51,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115939132] [2019-12-07 14:06:51,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:06:51,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:06:51,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892365789] [2019-12-07 14:06:51,984 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:51,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:51,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:51,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:51,984 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 14:06:51,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:51,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:51,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:51,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2019-12-07 14:06:51,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:51,985 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:51,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:51,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:51,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:52,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:52,044 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:52,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:52,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:52,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 14:06:52,050 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 /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:52,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 14:06:52,054 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:52,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 14:06:52,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 14:06:54,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 14:06:54,208 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 14:06:54,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 14:06:54,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 14:06:54,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 14:06:54,208 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 14:06:54,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:54,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 14:06:54,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 14:06:54,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaA10.c_Iteration4_Loop [2019-12-07 14:06:54,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 14:06:54,209 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 14:06:54,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:54,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:54,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 14:06:54,266 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 14:06:54,266 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/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 [2019-12-07 14:06:54,269 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 [2019-12-07 14:06:54,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:54,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:54,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 14:06:54,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:54,272 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 14:06:54,272 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 14:06:54,274 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:54,278 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 [2019-12-07 14:06:54,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 14:06:54,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 14:06:54,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 14:06:54,280 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 14:06:54,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 14:06:54,281 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 14:06:54,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 14:06:54,283 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 14:06:54,285 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 14:06:54,285 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c1ff0cc8-112f-443c-81c0-f8fba51f92f2/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 14:06:54,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 14:06:54,288 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 14:06:54,288 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 14:06:54,288 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 [] [2019-12-07 14:06:54,290 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 14:06:54,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,302 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,302 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,305 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:54,315 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 [2019-12-07 14:06:54,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 14:06:54,318 INFO L76 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. [2019-12-07 14:06:54,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-12-07 14:06:54,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:06:54,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:54,319 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:06:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,328 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,329 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,331 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:54,341 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 [2019-12-07 14:06:54,342 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 14:06:54,345 INFO L76 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. [2019-12-07 14:06:54,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-12-07 14:06:54,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:06:54,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:54,346 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 14:06:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:06:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,356 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:06:54,358 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 14:06:54,359 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:06:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:06:54,368 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 [2019-12-07 14:06:54,368 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 14:06:54,374 INFO L76 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. [2019-12-07 14:06:54,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 14:06:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 14:06:54,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-12-07 14:06:54,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 14:06:54,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:54,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 14:06:54,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:54,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 14:06:54,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 14:06:54,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-12-07 14:06:54,376 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:06:54,376 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-12-07 14:06:54,376 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:06:54,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:06:54,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:06:54,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:06:54,376 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:06:54,376 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:06:54,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:06:54,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:06:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:06:54,376 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-12-07 14:06:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:06:54,377 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:06:54,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:06:54,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 14:06:54,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 14:06:54,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 14:06:54,377 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:06:54,377 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 14:06:54,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:06:54,378 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 14:06:54,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 14:06:54,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 02:06:54 BoogieIcfgContainer [2019-12-07 14:06:54,383 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 14:06:54,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:06:54,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:06:54,384 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:06:54,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:06:48" (3/4) ... [2019-12-07 14:06:54,387 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:06:54,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:06:54,389 INFO L168 Benchmark]: Toolchain (without parser) took 6185.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -100.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:06:54,389 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:06:54,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:06:54,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:06:54,391 INFO L168 Benchmark]: Boogie Preprocessor took 11.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:06:54,391 INFO L168 Benchmark]: RCFGBuilder took 121.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:06:54,392 INFO L168 Benchmark]: BuchiAutomizer took 5850.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:06:54,392 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:06:54,394 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.06 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -156.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.86 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.46 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 121.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5850.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.57 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 5.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 17ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...