./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:39:18,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:39:18,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:39:18,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:39:18,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:39:18,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:39:18,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:39:18,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:39:18,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:39:18,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:39:18,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:39:18,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:39:18,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:39:18,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:39:18,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:39:18,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:39:18,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:39:18,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:39:18,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:39:18,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:39:18,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:39:18,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:39:18,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:39:18,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:39:18,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:39:18,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:39:18,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:39:18,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:39:18,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:39:18,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:39:18,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:39:18,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:39:18,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:39:18,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:39:18,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:39:18,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:39:18,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:39:18,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:39:18,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:39:18,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:39:18,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:39:18,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:39:18,658 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:39:18,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:39:18,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:39:18,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:39:18,661 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:39:18,661 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:39:18,661 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:39:18,661 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:39:18,662 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:39:18,662 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:39:18,662 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:39:18,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:39:18,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:39:18,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:39:18,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:39:18,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:39:18,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:39:18,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:39:18,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:39:18,664 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:39:18,664 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:39:18,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:39:18,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:39:18,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:39:18,665 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:39:18,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:39:18,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:39:18,666 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:39:18,679 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:39:18,679 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_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2019-11-15 23:39:18,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:39:18,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:39:18,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:39:18,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:39:18,743 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:39:18,745 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-11-15 23:39:18,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/data/c018f09bc/51ad81b1e9c745be89e2db2a443f5cbd/FLAGb8377bc9f [2019-11-15 23:39:19,213 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:39:19,214 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2019-11-15 23:39:19,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/data/c018f09bc/51ad81b1e9c745be89e2db2a443f5cbd/FLAGb8377bc9f [2019-11-15 23:39:19,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/bin/uautomizer/data/c018f09bc/51ad81b1e9c745be89e2db2a443f5cbd [2019-11-15 23:39:19,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:39:19,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:39:19,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:39:19,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:39:19,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:39:19,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19, skipping insertion in model container [2019-11-15 23:39:19,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,610 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:39:19,624 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:39:19,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:39:19,792 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:39:19,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:39:19,909 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:39:19,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19 WrapperNode [2019-11-15 23:39:19,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:39:19,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:39:19,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:39:19,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:39:19,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:39:19,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:39:19,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:39:19,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:39:19,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... [2019-11-15 23:39:19,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:39:19,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:39:19,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:39:19,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:39:19,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 [2019-11-15 23:39:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:39:20,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:39:20,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:39:20,240 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 23:39:20,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:20 BoogieIcfgContainer [2019-11-15 23:39:20,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:39:20,242 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:39:20,242 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:39:20,246 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:39:20,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:20,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:39:19" (1/3) ... [2019-11-15 23:39:20,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2760606d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:39:20, skipping insertion in model container [2019-11-15 23:39:20,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:20,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:19" (2/3) ... [2019-11-15 23:39:20,250 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2760606d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:39:20, skipping insertion in model container [2019-11-15 23:39:20,250 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:20,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:20" (3/3) ... [2019-11-15 23:39:20,252 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2019-11-15 23:39:20,313 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:39:20,313 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:39:20,313 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:39:20,313 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:39:20,313 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:39:20,314 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:39:20,314 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:39:20,314 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:39:20,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:39:20,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:20,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:20,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:20,379 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:39:20,380 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:20,380 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:39:20,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-15 23:39:20,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:20,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:20,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:20,382 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:39:20,382 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:20,407 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L21-2true [2019-11-15 23:39:20,408 INFO L793 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L18true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1; 9#L21-2true [2019-11-15 23:39:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:39:20,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:20,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840375705] [2019-11-15 23:39:20,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,579 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:20,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-15 23:39:20,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:20,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980367036] [2019-11-15 23:39:20,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,624 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-15 23:39:20,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:20,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737382481] [2019-11-15 23:39:20,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:20,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:20,659 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:20,767 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:20,768 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:20,768 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:20,769 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:20,769 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:20,769 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:20,769 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:20,769 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:20,770 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-11-15 23:39:20,770 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:20,770 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:20,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:20,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:20,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:20,926 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:20,927 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 [2019-11-15 23:39:20,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:20,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:20,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:20,957 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_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 [2019-11-15 23:39:20,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:20,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:20,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:20,975 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_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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 [2019-11-15 23:39:20,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:20,983 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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) [2019-11-15 23:39:21,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:21,003 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:21,016 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:21,016 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:21,016 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:21,017 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:21,017 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:21,017 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,017 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:21,017 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:21,017 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2019-11-15 23:39:21,017 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:21,018 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:21,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,217 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:21,223 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:21,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:21,227 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:21,227 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:21,228 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:21,228 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:21,237 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:21,237 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:21,246 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:21,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:21,248 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:21,248 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:21,248 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:21,249 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:21,252 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:21,252 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:21,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:21,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:21,264 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:21,265 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:21,265 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:21,265 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:21,266 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:21,267 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:39:21,267 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:21,278 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:21,286 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:39:21,286 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:39:21,289 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:21,289 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:21,290 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:21,290 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2019-11-15 23:39:21,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:21,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:21,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:21,384 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:21,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:21,417 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:21,418 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-15 23:39:21,503 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 30 states and 39 transitions. Complement of second has 7 states. [2019-11-15 23:39:21,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2019-11-15 23:39:21,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-15 23:39:21,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:21,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:39:21,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:21,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-15 23:39:21,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:21,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 39 transitions. [2019-11-15 23:39:21,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:21,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 15 transitions. [2019-11-15 23:39:21,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-15 23:39:21,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-15 23:39:21,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2019-11-15 23:39:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:21,534 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2019-11-15 23:39:21,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2019-11-15 23:39:21,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-11-15 23:39:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-15 23:39:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-15 23:39:21,568 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-15 23:39:21,568 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-15 23:39:21,568 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:39:21,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-15 23:39:21,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:21,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:21,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:21,571 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:39:21,571 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:39:21,572 INFO L791 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 79#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-11-15 23:39:21,572 INFO L793 eck$LassoCheckResult]: Loop: 80#L18 assume !(main_~q~0 < main_~p~0); 74#L21 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1; 75#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 80#L18 [2019-11-15 23:39:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:21,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 23:39:21,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:21,574 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758609465] [2019-11-15 23:39:21,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,611 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:21,613 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-15 23:39:21,615 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:21,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997183585] [2019-11-15 23:39:21,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,616 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,634 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:21,639 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-15 23:39:21,639 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:21,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53228271] [2019-11-15 23:39:21,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:21,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:21,665 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:21,717 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:21,718 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:21,718 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:21,718 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:21,718 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:21,718 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,718 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:21,719 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:21,719 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-11-15 23:39:21,719 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:21,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:21,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,794 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:21,795 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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) [2019-11-15 23:39:21,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:21,804 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,812 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:21,813 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_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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) [2019-11-15 23:39:21,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:21,828 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:21,834 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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) [2019-11-15 23:39:21,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:21,848 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_902e2e6f-2af7-484a-a66a-a353d4b3e60c/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) [2019-11-15 23:39:21,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:21,877 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,981 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:21,984 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:21,984 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:21,984 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:21,984 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:21,985 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:21,985 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:21,985 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:21,985 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:21,985 INFO L131 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2019-11-15 23:39:21,985 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:21,985 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:21,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:21,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:22,068 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:22,069 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:22,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:22,070 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:22,071 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:22,071 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:22,071 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:22,073 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:22,074 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:22,093 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:22,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:22,098 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:22,098 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:22,099 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:22,099 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:22,101 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:22,101 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:22,108 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:22,108 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:22,109 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:22,109 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:22,110 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:22,110 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:22,110 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:22,111 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:39:22,111 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:22,118 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:22,124 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:39:22,125 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:39:22,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:22,126 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:22,126 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:22,126 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2019-11-15 23:39:22,127 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:22,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:22,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:22,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:22,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:22,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:22,186 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:22,187 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-15 23:39:22,225 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 14 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2019-11-15 23:39:22,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 23:39:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-15 23:39:22,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-15 23:39:22,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:22,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:39:22,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:22,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-15 23:39:22,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:22,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2019-11-15 23:39:22,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:22,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 23 states and 35 transitions. [2019-11-15 23:39:22,231 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 23:39:22,231 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:39:22,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 35 transitions. [2019-11-15 23:39:22,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:22,232 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-11-15 23:39:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 35 transitions. [2019-11-15 23:39:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-15 23:39:22,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:39:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 34 transitions. [2019-11-15 23:39:22,236 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-11-15 23:39:22,236 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 34 transitions. [2019-11-15 23:39:22,236 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:39:22,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 34 transitions. [2019-11-15 23:39:22,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 23:39:22,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:22,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:22,238 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 23:39:22,238 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:39:22,239 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 151#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 157#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-11-15 23:39:22,239 INFO L793 eck$LassoCheckResult]: Loop: 146#L21 assume !(main_~p~0 < main_~q~0); 147#L21-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 160#L18 assume !(main_~q~0 < main_~p~0); 146#L21 [2019-11-15 23:39:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-15 23:39:22,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:22,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208428818] [2019-11-15 23:39:22,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:22,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:22,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:22,249 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:22,250 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-15 23:39:22,250 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:22,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125214167] [2019-11-15 23:39:22,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:22,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:22,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:22,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125214167] [2019-11-15 23:39:22,298 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:39:22,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:39:22,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314778705] [2019-11-15 23:39:22,301 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-11-15 23:39:22,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:39:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:39:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:39:22,306 INFO L87 Difference]: Start difference. First operand 22 states and 34 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-15 23:39:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:39:22,338 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-11-15 23:39:22,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:39:22,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2019-11-15 23:39:22,341 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:39:22,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2019-11-15 23:39:22,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:39:22,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:39:22,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:39:22,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:39:22,342 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:22,342 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:22,342 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:22,343 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:39:22,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:39:22,343 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:39:22,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:39:22,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:39:22 BoogieIcfgContainer [2019-11-15 23:39:22,351 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:39:22,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:39:22,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:39:22,353 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:39:22,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:20" (3/4) ... [2019-11-15 23:39:22,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:39:22,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:39:22,372 INFO L168 Benchmark]: Toolchain (without parser) took 2778.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 950.1 MB in the beginning and 980.3 MB in the end (delta: -30.2 MB). Peak memory consumption was 123.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:22,373 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:22,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:22,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:22,376 INFO L168 Benchmark]: Boogie Preprocessor took 18.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:22,377 INFO L168 Benchmark]: RCFGBuilder took 274.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:22,384 INFO L168 Benchmark]: BuchiAutomizer took 2108.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 149.0 MB). Peak memory consumption was 149.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:22,385 INFO L168 Benchmark]: Witness Printer took 16.09 ms. Allocated memory is still 1.2 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:22,391 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 274.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2108.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.3 MB in the end (delta: 149.0 MB). Peak memory consumption was 149.0 MB. Max. memory is 11.5 GB. * Witness Printer took 16.09 ms. Allocated memory is still 1.2 GB. Free memory is still 980.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 22 SDslu, 9 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...