./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/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 37028c56b7915050ee6a79b5e737b9e44bf7c3db .................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 10:54:09,720 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:54:09,721 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:54:09,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:54:09,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:54:09,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:54:09,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:54:09,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:54:09,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:54:09,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:54:09,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:54:09,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:54:09,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:54:09,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:54:09,738 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:54:09,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:54:09,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:54:09,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:54:09,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:54:09,744 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:54:09,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:54:09,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:54:09,747 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:54:09,748 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:54:09,748 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:54:09,749 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:54:09,749 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:54:09,750 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:54:09,751 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:54:09,752 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:54:09,752 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:54:09,752 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:54:09,753 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:54:09,753 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:54:09,754 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:54:09,754 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:54:09,754 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 10:54:09,766 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:54:09,766 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:54:09,767 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:54:09,767 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:54:09,767 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:54:09,767 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:54:09,767 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:54:09,768 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:54:09,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:54:09,769 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:54:09,769 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:54:09,770 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:54:09,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:54:09,771 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:54:09,771 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:54:09,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:54:09,771 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:54:09,771 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:54:09,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:54:09,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:54:09,772 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:54:09,772 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:54:09,772 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:54:09,772 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:54:09,773 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:54:09,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:54:09,773 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:54:09,773 INFO L133 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/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/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 -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2018-11-18 10:54:09,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:54:09,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:54:09,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:54:09,810 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:54:09,811 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:54:09,812 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/../../sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 10:54:09,854 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/data/80993e991/5fe89bfaf61d494d82e0332dfc3e52cf/FLAG65287a4e7 [2018-11-18 10:54:10,209 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:54:10,210 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/sv-benchmarks/c/recursive/McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 10:54:10,216 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/data/80993e991/5fe89bfaf61d494d82e0332dfc3e52cf/FLAG65287a4e7 [2018-11-18 10:54:10,227 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/data/80993e991/5fe89bfaf61d494d82e0332dfc3e52cf [2018-11-18 10:54:10,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:54:10,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:54:10,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:10,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:54:10,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:54:10,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe9864d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10, skipping insertion in model container [2018-11-18 10:54:10,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:54:10,267 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:54:10,410 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:10,413 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:54:10,424 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:10,436 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:54:10,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10 WrapperNode [2018-11-18 10:54:10,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:10,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:54:10,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:54:10,437 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:54:10,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:54:10,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:54:10,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:54:10,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:54:10,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... [2018-11-18 10:54:10,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:54:10,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:54:10,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:54:10,467 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:54:10,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/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 [2018-11-18 10:54:10,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:54:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:54:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:54:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:54:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:54:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:54:10,552 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-18 10:54:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-18 10:54:10,672 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:54:10,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:10 BoogieIcfgContainer [2018-11-18 10:54:10,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:54:10,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:54:10,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:54:10,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:54:10,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:54:10" (1/3) ... [2018-11-18 10:54:10,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db308ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:54:10, skipping insertion in model container [2018-11-18 10:54:10,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:10" (2/3) ... [2018-11-18 10:54:10,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db308ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:54:10, skipping insertion in model container [2018-11-18 10:54:10,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:10" (3/3) ... [2018-11-18 10:54:10,679 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 10:54:10,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:54:10,691 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:54:10,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:54:10,728 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:54:10,728 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:54:10,728 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:54:10,728 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:54:10,728 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:54:10,729 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:54:10,729 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:54:10,729 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:54:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 10:54:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:54:10,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:54:10,748 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:54:10,750 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:54:10,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:54:10,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1590359645, now seen corresponding path program 1 times [2018-11-18 10:54:10,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:54:10,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:54:10,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:54:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:54:10,799 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:54:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:54:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:54:10,845 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:54:10,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:54:10 BoogieIcfgContainer [2018-11-18 10:54:10,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:54:10,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:54:10,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:54:10,864 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:54:10,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:10" (3/4) ... [2018-11-18 10:54:10,866 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:54:10,897 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_744eae41-3780-46d0-9041-e191fa766df0/bin-2019/utaipan/witness.graphml [2018-11-18 10:54:10,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:54:10,898 INFO L168 Benchmark]: Toolchain (without parser) took 667.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:10,899 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:10,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.10 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:10,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:10,901 INFO L168 Benchmark]: Boogie Preprocessor took 12.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:10,901 INFO L168 Benchmark]: RCFGBuilder took 205.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:10,902 INFO L168 Benchmark]: TraceAbstraction took 189.60 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:10,902 INFO L168 Benchmark]: Witness Printer took 33.59 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:10,906 INFO L336 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.10 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.10 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.66 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 205.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 189.60 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Witness Printer took 33.59 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: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL, EXPR f91(x) VAL [\old(x)=102] [L16] COND TRUE x > 100 [L17] RET return x -10; VAL [\old(x)=102, \result=92, x=102] [L26] EXPR f91(x) VAL [f91(x)=92, x=102] [L26] int result = f91(x); [L27] COND FALSE !(result == 91 || x > 102 && result == x - 10) VAL [result=92, x=102] [L30] __VERIFIER_error() VAL [result=92, x=102] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...