./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccae6f392e1d87c0b193f39dee91a5c51306cb93 ................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:23:14,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:23:14,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:23:14,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:23:14,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:23:14,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:23:14,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:23:14,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:23:14,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:23:14,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:23:14,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:23:14,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:23:14,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:23:14,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:23:14,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:23:14,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:23:14,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:23:14,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:23:14,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:23:14,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:23:14,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:23:14,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:23:14,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:23:14,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:23:14,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:23:14,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:23:14,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:23:14,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:23:14,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:23:14,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:23:14,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:23:14,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:23:14,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:23:14,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:23:14,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:23:14,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:23:14,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:23:14,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:23:14,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:23:14,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:23:14,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:23:14,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 10:23:14,758 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:23:14,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:23:14,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:23:14,759 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:23:14,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:23:14,759 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:23:14,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 10:23:14,759 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:23:14,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 10:23:14,760 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 10:23:14,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:23:14,761 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:23:14,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:23:14,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:23:14,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:23:14,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:23:14,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:23:14,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:23:14,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 10:23:14,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:23:14,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:23:14,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:23:14,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:23:14,764 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_67dcff63-298d-4e31-96da-54d404aab951/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccae6f392e1d87c0b193f39dee91a5c51306cb93 [2019-12-07 10:23:14,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:23:14,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:23:14,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:23:14,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:23:14,876 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:23:14,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2019-12-07 10:23:14,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/data/104e60f6e/3ffc434ec5c543a89eaf769c9140ccb4/FLAG9ae354493 [2019-12-07 10:23:15,334 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:23:15,335 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1.c [2019-12-07 10:23:15,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/data/104e60f6e/3ffc434ec5c543a89eaf769c9140ccb4/FLAG9ae354493 [2019-12-07 10:23:15,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/data/104e60f6e/3ffc434ec5c543a89eaf769c9140ccb4 [2019-12-07 10:23:15,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:23:15,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:23:15,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:23:15,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:23:15,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:23:15,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15, skipping insertion in model container [2019-12-07 10:23:15,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:23:15,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:23:15,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:23:15,465 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:23:15,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:23:15,514 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:23:15,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15 WrapperNode [2019-12-07 10:23:15,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:23:15,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:23:15,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:23:15,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:23:15,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:23:15,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:23:15,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:23:15,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:23:15,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... [2019-12-07 10:23:15,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:23:15,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:23:15,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:23:15,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:23:15,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/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 [2019-12-07 10:23:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure A [2019-12-07 10:23:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2019-12-07 10:23:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:23:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:23:15,693 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:23:15,693 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 10:23:15,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:23:15 BoogieIcfgContainer [2019-12-07 10:23:15,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:23:15,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:23:15,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:23:15,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:23:15,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:23:15" (1/3) ... [2019-12-07 10:23:15,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3565ab56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:23:15, skipping insertion in model container [2019-12-07 10:23:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:23:15" (2/3) ... [2019-12-07 10:23:15,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3565ab56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:23:15, skipping insertion in model container [2019-12-07 10:23:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:23:15" (3/3) ... [2019-12-07 10:23:15,698 INFO L109 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2019-12-07 10:23:15,705 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:23:15,709 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:23:15,716 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 10:23:15,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:23:15,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:23:15,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:23:15,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:23:15,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:23:15,730 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:23:15,730 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:23:15,730 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:23:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 10:23:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:23:15,744 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:23:15,744 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:23:15,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:23:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:23:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1944176839, now seen corresponding path program 1 times [2019-12-07 10:23:15,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:23:15,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479122980] [2019-12-07 10:23:15,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:23:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:23:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 10:23:15,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479122980] [2019-12-07 10:23:15,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578410855] [2019-12-07 10:23:15,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:23:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:23:15,952 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:23:15,955 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:23:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 10:23:15,988 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:23:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 10:23:16,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236874314] [2019-12-07 10:23:16,063 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-12-07 10:23:16,063 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 10:23:16,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 10:23:16,072 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 10:23:16,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 10:23:16,220 INFO L197 IcfgInterpreter]: Interpreting procedure A with input of size 23 for LOIs [2019-12-07 10:23:16,225 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 10:23:16,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 10:23:16,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 5, 5] total 13 [2019-12-07 10:23:16,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482965019] [2019-12-07 10:23:16,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 10:23:16,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:23:16,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 10:23:16,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 10:23:16,410 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 7 states. [2019-12-07 10:23:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:23:16,466 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-12-07 10:23:16,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:23:16,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-12-07 10:23:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:23:16,473 INFO L225 Difference]: With dead ends: 31 [2019-12-07 10:23:16,473 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 10:23:16,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 10:23:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 10:23:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-12-07 10:23:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 10:23:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-12-07 10:23:16,504 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2019-12-07 10:23:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:23:16,504 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-12-07 10:23:16,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 10:23:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-12-07 10:23:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 10:23:16,506 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:23:16,506 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:23:16,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:23:16,707 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:23:16,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:23:16,707 INFO L82 PathProgramCache]: Analyzing trace with hash 540242173, now seen corresponding path program 1 times [2019-12-07 10:23:16,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:23:16,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546170414] [2019-12-07 10:23:16,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:23:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:23:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 10:23:16,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546170414] [2019-12-07 10:23:16,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564877827] [2019-12-07 10:23:16,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:23:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:23:16,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:23:16,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:23:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 10:23:16,812 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 10:23:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 10:23:16,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [835501859] [2019-12-07 10:23:16,851 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-12-07 10:23:16,852 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 10:23:16,852 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 10:23:16,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 10:23:16,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2019-12-07 10:23:16,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905269749] [2019-12-07 10:23:16,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:23:16,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:23:16,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:23:16,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:23:16,855 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 6 states. [2019-12-07 10:23:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:23:16,890 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-12-07 10:23:16,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:23:16,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-12-07 10:23:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:23:16,891 INFO L225 Difference]: With dead ends: 36 [2019-12-07 10:23:16,891 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 10:23:16,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:23:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 10:23:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 10:23:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 10:23:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-12-07 10:23:16,895 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 21 [2019-12-07 10:23:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:23:16,895 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-12-07 10:23:16,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:23:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-12-07 10:23:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 10:23:16,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:23:16,896 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:23:17,097 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:23:17,097 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:23:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:23:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash -554895117, now seen corresponding path program 2 times [2019-12-07 10:23:17,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:23:17,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048900852] [2019-12-07 10:23:17,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:23:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:23:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:23:17,153 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 10:23:17,153 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 10:23:17,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:23:17 BoogieIcfgContainer [2019-12-07 10:23:17,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:23:17,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:23:17,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:23:17,177 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:23:17,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:23:15" (3/4) ... [2019-12-07 10:23:17,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 10:23:17,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67dcff63-298d-4e31-96da-54d404aab951/bin/utaipan/witness.graphml [2019-12-07 10:23:17,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:23:17,213 INFO L168 Benchmark]: Toolchain (without parser) took 1863.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 946.2 MB in the beginning and 948.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 124.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:23:17,214 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:23:17,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:23:17,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.22 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. [2019-12-07 10:23:17,215 INFO L168 Benchmark]: Boogie Preprocessor took 10.63 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. [2019-12-07 10:23:17,215 INFO L168 Benchmark]: RCFGBuilder took 147.23 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:23:17,216 INFO L168 Benchmark]: TraceAbstraction took 1481.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.8 MB in the end (delta: 150.8 MB). Peak memory consumption was 150.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:23:17,216 INFO L168 Benchmark]: Witness Printer took 35.59 ms. Allocated memory is still 1.2 GB. Free memory was 953.8 MB in the beginning and 948.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:23:17,218 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.22 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 10.63 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 147.23 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1481.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 953.8 MB in the end (delta: 150.8 MB). Peak memory consumption was 150.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.59 ms. Allocated memory is still 1.2 GB. Free memory was 953.8 MB in the beginning and 948.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int g; [L26] int g = __VERIFIER_nondet_int(); [L27] int h = !g; VAL [g=0] [L28] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, g=0] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, a1=1, a2=0, g=0] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, g=0] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, A(a2,a1)=0, a1=1, a2=0, g=1] [L28] RET A(g,h) VAL [g=1] [L29] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, g=1] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, a1=1, a2=0, g=1] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, g=1] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, A(a2,a1)=0, a1=1, a2=0, g=1] [L29] RET A(g,h) VAL [g=1] [L30] COND TRUE \read(g) VAL [g=1] [L31] __VERIFIER_error() VAL [g=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 13 SDslu, 53 SDs, 0 SdLazy, 75 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 13 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 7142 SizeOfPredicates, 6 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 0 PerfectInterpolantSequences, 21/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 163, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 12, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME[ms]: 5, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME[ms]: 13, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 7, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME[ms]: 17, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 30, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME[ms]: 90, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 12, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 0, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME[ms]: 3, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 86, DAG_COMPRESSION_RETAINED_NODES: 34, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...