./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5e607d57754c4f188315c4983a58e4a794edbb35 ....................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:13:03,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:13:03,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:13:03,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:13:03,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:13:03,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:13:03,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:13:03,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:13:03,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:13:03,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:13:03,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:13:03,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:13:03,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:13:03,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:13:03,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:13:03,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:13:03,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:13:03,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:13:03,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:13:03,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:13:03,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:13:03,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:13:03,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:13:03,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:13:03,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:13:03,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:13:03,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:13:03,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:13:03,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:13:03,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:13:03,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:13:03,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:13:03,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:13:03,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:13:03,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:13:03,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:13:03,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:13:03,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:13:03,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:13:03,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:13:03,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:13:03,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:13:03,543 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:13:03,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:13:03,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:13:03,545 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:13:03,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:13:03,545 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:13:03,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:13:03,546 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:13:03,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:13:03,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:13:03,546 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:13:03,546 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:13:03,547 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:13:03,547 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:13:03,547 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:13:03,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:13:03,548 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:13:03,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:13:03,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:13:03,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:13:03,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:13:03,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:13:03,549 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:13:03,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:13:03,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:13:03,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:13:03,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:13:03,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:13:03,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:13:03,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:13:03,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:13:03,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:13:03,552 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:13:03,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:13:03,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:13:03,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:13:03,553 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan 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(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 5e607d57754c4f188315c4983a58e4a794edbb35 [2019-11-26 02:13:03,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:13:03,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:13:03,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:13:03,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:13:03,707 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:13:03,708 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig4.c [2019-11-26 02:13:03,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/data/8c1ec1f56/685c659b18544b6fa8d427797d1bb10d/FLAGe1c8f5d60 [2019-11-26 02:13:04,180 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:13:04,181 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig4.c [2019-11-26 02:13:04,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/data/8c1ec1f56/685c659b18544b6fa8d427797d1bb10d/FLAGe1c8f5d60 [2019-11-26 02:13:04,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/data/8c1ec1f56/685c659b18544b6fa8d427797d1bb10d [2019-11-26 02:13:04,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:13:04,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:13:04,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:04,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:13:04,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:13:04,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b3a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04, skipping insertion in model container [2019-11-26 02:13:04,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:13:04,600 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:13:04,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:04,784 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:13:04,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:04,869 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:13:04,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04 WrapperNode [2019-11-26 02:13:04,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:04,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:04,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:13:04,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:13:04,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:04,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:13:04,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:13:04,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:13:04,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... [2019-11-26 02:13:04,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:13:04,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:13:04,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:13:04,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:13:04,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:13:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:13:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:13:05,128 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:13:05,129 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:13:05,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:05 BoogieIcfgContainer [2019-11-26 02:13:05,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:13:05,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:13:05,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:13:05,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:13:05,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:13:04" (1/3) ... [2019-11-26 02:13:05,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1675a0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:05, skipping insertion in model container [2019-11-26 02:13:05,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:04" (2/3) ... [2019-11-26 02:13:05,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1675a0f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:05, skipping insertion in model container [2019-11-26 02:13:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:05" (3/3) ... [2019-11-26 02:13:05,141 INFO L109 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig4.c [2019-11-26 02:13:05,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:13:05,157 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-26 02:13:05,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-26 02:13:05,191 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:13:05,192 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:13:05,192 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:13:05,193 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:13:05,193 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:13:05,193 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:13:05,193 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:13:05,193 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:13:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:13:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:13:05,223 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:05,224 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:13:05,227 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:05,232 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-26 02:13:05,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:05,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248433518] [2019-11-26 02:13:05,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:05,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248433518] [2019-11-26 02:13:05,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:05,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:13:05,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610925127] [2019-11-26 02:13:05,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:13:05,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:05,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:13:05,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:05,379 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:13:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:05,404 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-11-26 02:13:05,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:13:05,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:13:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:05,412 INFO L225 Difference]: With dead ends: 7 [2019-11-26 02:13:05,412 INFO L226 Difference]: Without dead ends: 5 [2019-11-26 02:13:05,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:13:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-11-26 02:13:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-11-26 02:13:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-26 02:13:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-11-26 02:13:05,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-11-26 02:13:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:05,439 INFO L462 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-11-26 02:13:05,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:13:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-11-26 02:13:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:13:05,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:05,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:13:05,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:13:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-26 02:13:05,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:05,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102652030] [2019-11-26 02:13:05,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:05,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102652030] [2019-11-26 02:13:05,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:05,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:13:05,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462713694] [2019-11-26 02:13:05,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:13:05,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:05,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:13:05,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:13:05,476 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-11-26 02:13:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:05,519 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-11-26 02:13:05,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:13:05,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 02:13:05,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:05,520 INFO L225 Difference]: With dead ends: 5 [2019-11-26 02:13:05,520 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:13:05,521 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:13:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:13:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:13:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:13:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:13:05,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-11-26 02:13:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:05,523 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:13:05,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:13:05,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:13:05,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:13:05,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:13:05,548 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:13:05,548 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:13:05,548 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:13:05,548 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:13:05,548 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-26 02:13:05,549 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-26 02:13:05,549 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 17 19) the Hoare annotation is: (and (<= 23 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2019-11-26 02:13:05,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:13:05 BoogieIcfgContainer [2019-11-26 02:13:05,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:13:05,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:13:05,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:13:05,561 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:13:05,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:05" (3/4) ... [2019-11-26 02:13:05,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:13:05,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:13:05,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:13:05,574 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:13:05,613 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9c4ca0ce-2291-47e2-8893-eaaf2d5b9072/bin/utaipan/witness.graphml [2019-11-26 02:13:05,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:13:05,615 INFO L168 Benchmark]: Toolchain (without parser) took 1056.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -121.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:05,616 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:05,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:05,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.51 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. [2019-11-26 02:13:05,617 INFO L168 Benchmark]: Boogie Preprocessor took 14.08 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. [2019-11-26 02:13:05,618 INFO L168 Benchmark]: RCFGBuilder took 207.77 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:05,618 INFO L168 Benchmark]: TraceAbstraction took 429.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:05,619 INFO L168 Benchmark]: Witness Printer took 52.42 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. [2019-11-26 02:13:05,621 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.51 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 14.08 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 207.77 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 429.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 23 <= y && x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...