./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.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_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/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 df3ddc93bc6339292c9158119f1fdb949bb8842d ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:59:43,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:59:43,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:59:43,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:59:43,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:59:43,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:59:43,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:59:43,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:59:43,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:59:43,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:59:43,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:59:43,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:59:43,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:59:43,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:59:43,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:59:43,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:59:43,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:59:43,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:59:43,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:59:43,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:59:43,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:59:43,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:59:43,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:59:43,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:59:43,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:59:43,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:59:43,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:59:43,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:59:43,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:59:43,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:59:43,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:59:43,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:59:43,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:59:43,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:59:43,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:59:43,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:59:43,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:59:43,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:59:43,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:59:43,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:59:43,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:59:43,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:59:43,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:59:43,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:59:43,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:59:43,559 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:59:43,559 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:59:43,560 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:59:43,560 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:59:43,560 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:59:43,560 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:59:43,560 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:59:43,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:59:43,561 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:59:43,561 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:59:43,561 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:59:43,561 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:59:43,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:59:43,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:59:43,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:59:43,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:59:43,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:59:43,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:59:43,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:59:43,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:59:43,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:59:43,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:59:43,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:59:43,566 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_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/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 -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2019-11-26 02:59:43,739 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:59:43,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:59:43,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:59:43,758 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:59:43,759 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:59:43,759 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2019-11-26 02:59:43,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/data/caaa4b1ec/5d1e19fc51cf46c5974003c9ecafd53c/FLAG8c0a729a5 [2019-11-26 02:59:44,205 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:59:44,206 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2019-11-26 02:59:44,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/data/caaa4b1ec/5d1e19fc51cf46c5974003c9ecafd53c/FLAG8c0a729a5 [2019-11-26 02:59:44,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/data/caaa4b1ec/5d1e19fc51cf46c5974003c9ecafd53c [2019-11-26 02:59:44,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:59:44,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:59:44,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:44,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:59:44,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:59:44,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:44,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312eab7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44, skipping insertion in model container [2019-11-26 02:59:44,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:44,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:59:44,688 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:59:44,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:44,868 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:59:44,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:59:44,982 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:59:44,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44 WrapperNode [2019-11-26 02:59:44,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:59:44,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:44,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:59:44,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:59:44,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:44,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:59:45,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:59:45,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:59:45,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:59:45,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... [2019-11-26 02:59:45,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:59:45,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:59:45,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:59:45,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:59:45,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/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 02:59:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:59:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:59:45,273 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:59:45,274 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:59:45,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:45 BoogieIcfgContainer [2019-11-26 02:59:45,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:59:45,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:59:45,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:59:45,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:59:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:59:44" (1/3) ... [2019-11-26 02:59:45,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5889fccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:45, skipping insertion in model container [2019-11-26 02:59:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:59:44" (2/3) ... [2019-11-26 02:59:45,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5889fccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:59:45, skipping insertion in model container [2019-11-26 02:59:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:45" (3/3) ... [2019-11-26 02:59:45,281 INFO L109 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2019-11-26 02:59:45,289 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:59:45,295 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:59:45,306 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:59:45,331 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:59:45,331 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:59:45,331 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:59:45,331 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:59:45,331 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:59:45,331 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:59:45,332 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:59:45,332 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:59:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:59:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:59:45,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:45,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:59:45,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:59:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-26 02:59:45,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:45,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422370052] [2019-11-26 02:59:45,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:45,472 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 02:59:45,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422370052] [2019-11-26 02:59:45,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:45,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:59:45,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25986360] [2019-11-26 02:59:45,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:59:45,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:45,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:59:45,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:59:45,489 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-11-26 02:59:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:45,566 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-26 02:59:45,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:59:45,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:59:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:45,575 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:59:45,576 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:59:45,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:59:45,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:59:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:59:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:59:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-26 02:59:45,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2019-11-26 02:59:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:45,619 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-26 02:59:45,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:59:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-26 02:59:45,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:59:45,619 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:45,619 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:59:45,620 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:59:45,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:45,620 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-11-26 02:59:45,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:45,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074940991] [2019-11-26 02:59:45,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:45,645 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 02:59:45,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074940991] [2019-11-26 02:59:45,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:45,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:59:45,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053256310] [2019-11-26 02:59:45,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:59:45,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:59:45,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:59:45,648 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2019-11-26 02:59:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:45,683 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-26 02:59:45,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:59:45,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:59:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:45,684 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:59:45,684 INFO L226 Difference]: Without dead ends: 14 [2019-11-26 02:59:45,685 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 02:59:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-26 02:59:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-26 02:59:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:59:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-26 02:59:45,689 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2019-11-26 02:59:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:45,690 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-26 02:59:45,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:59:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-26 02:59:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:59:45,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:45,690 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:59:45,691 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:59:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-11-26 02:59:45,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:45,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928564224] [2019-11-26 02:59:45,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:45,711 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 02:59:45,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928564224] [2019-11-26 02:59:45,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:45,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:59:45,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156058723] [2019-11-26 02:59:45,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:59:45,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:45,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:59:45,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:59:45,713 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-26 02:59:45,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:45,741 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-26 02:59:45,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:59:45,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:59:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:45,743 INFO L225 Difference]: With dead ends: 14 [2019-11-26 02:59:45,743 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:59:45,743 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 02:59:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:59:45,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:59:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:59:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-26 02:59:45,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2019-11-26 02:59:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:45,748 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-26 02:59:45,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:59:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-26 02:59:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:59:45,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:45,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:59:45,749 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:59:45,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-11-26 02:59:45,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:45,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309723205] [2019-11-26 02:59:45,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:45,792 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 02:59:45,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309723205] [2019-11-26 02:59:45,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:45,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:59:45,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997578186] [2019-11-26 02:59:45,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:59:45,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:59:45,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:59:45,794 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2019-11-26 02:59:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:45,835 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2019-11-26 02:59:45,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:59:45,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:59:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:45,837 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:59:45,837 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:59:45,837 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:59:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:59:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:59:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:59:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-26 02:59:45,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-11-26 02:59:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:45,845 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-26 02:59:45,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:59:45,846 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-11-26 02:59:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:59:45,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:45,847 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:45,848 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:59:45,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2019-11-26 02:59:45,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:45,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654836350] [2019-11-26 02:59:45,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:59:45,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654836350] [2019-11-26 02:59:45,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:59:45,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:59:45,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231078487] [2019-11-26 02:59:45,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:59:45,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:59:45,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:59:45,887 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-11-26 02:59:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:45,927 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-11-26 02:59:45,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:59:45,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:59:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:45,928 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:59:45,928 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:59:45,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:59:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:59:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:59:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:59:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:59:45,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-26 02:59:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:45,930 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:59:45,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:59:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:59:45,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:59:45,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:59:45,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:59:45,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:59:45,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:59:45,969 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-26 02:59:45,969 INFO L440 ceAbstractionStarter]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2019-11-26 02:59:45,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-11-26 02:59:45,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-11-26 02:59:45,969 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:59:45,970 INFO L444 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2019-11-26 02:59:45,970 INFO L444 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-26 02:59:45,970 INFO L444 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-26 02:59:45,970 INFO L444 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-26 02:59:45,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:45 BoogieIcfgContainer [2019-11-26 02:59:45,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:45,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:45,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:45,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:45,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:59:45" (3/4) ... [2019-11-26 02:59:45,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:59:46,002 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:59:46,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:59:46,003 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:59:46,071 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5b9a2f8-7bf2-400f-ae29-f3e11259ef33/bin/utaipan/witness.graphml [2019-11-26 02:59:46,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:46,073 INFO L168 Benchmark]: Toolchain (without parser) took 1418.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 951.5 MB in the beginning and 1.0 GB in the end (delta: -94.3 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:46,074 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-11-26 02:59:46,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:46,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.03 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 02:59:46,075 INFO L168 Benchmark]: Boogie Preprocessor took 16.89 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. [2019-11-26 02:59:46,076 INFO L168 Benchmark]: RCFGBuilder took 249.06 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:46,076 INFO L168 Benchmark]: TraceAbstraction took 710.08 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: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:46,077 INFO L168 Benchmark]: Witness Printer took 85.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:46,080 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 327.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -172.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.03 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 16.89 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 249.06 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 710.08 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: 52.2 MB). Peak memory consumption was 52.2 MB. Max. memory is 11.5 GB. * Witness Printer took 85.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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 - PositiveResult [Line: 20]: 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 4 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 15 SDslu, 0 SDs, 0 SdLazy, 66 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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...