./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/terminator_03_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c3fbe1c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loops/terminator_03_false-unreach-call_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 52ac1cbbf609460dddc737d444d8d8d12fc803ae ............................................................................................................................................................................................................................................................................ 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 0.1.23-8c3fbe1 [2018-10-22 14:57:22,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 14:57:22,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 14:57:22,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 14:57:22,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 14:57:22,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 14:57:22,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 14:57:22,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 14:57:22,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 14:57:22,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 14:57:22,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 14:57:22,784 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 14:57:22,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 14:57:22,785 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 14:57:22,788 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 14:57:22,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 14:57:22,792 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 14:57:22,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 14:57:22,798 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 14:57:22,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 14:57:22,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 14:57:22,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 14:57:22,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 14:57:22,811 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 14:57:22,811 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 14:57:22,813 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 14:57:22,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 14:57:22,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 14:57:22,818 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 14:57:22,820 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 14:57:22,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 14:57:22,823 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 14:57:22,825 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 14:57:22,825 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 14:57:22,827 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 14:57:22,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 14:57:22,828 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 14:57:22,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 14:57:22,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 14:57:22,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 14:57:22,855 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 14:57:22,855 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 14:57:22,855 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 14:57:22,855 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 14:57:22,855 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 14:57:22,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 14:57:22,857 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 14:57:22,857 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 14:57:22,858 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 14:57:22,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 14:57:22,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 14:57:22,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 14:57:22,861 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 14:57:22,863 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 14:57:22,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 14:57:22,863 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 14:57:22,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 14:57:22,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 14:57:22,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 14:57:22,864 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 14:57:22,865 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 14:57:22,866 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> 52ac1cbbf609460dddc737d444d8d8d12fc803ae [2018-10-22 14:57:22,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 14:57:22,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 14:57:22,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 14:57:22,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 14:57:22,948 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 14:57:22,949 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/terminator_03_false-unreach-call_true-termination.i [2018-10-22 14:57:23,019 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30f043bc8/b1c199b344b14a418e524beeb498878c/FLAG5e58bb052 [2018-10-22 14:57:23,493 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 14:57:23,494 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03_false-unreach-call_true-termination.i [2018-10-22 14:57:23,503 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30f043bc8/b1c199b344b14a418e524beeb498878c/FLAG5e58bb052 [2018-10-22 14:57:23,521 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/30f043bc8/b1c199b344b14a418e524beeb498878c [2018-10-22 14:57:23,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 14:57:23,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 14:57:23,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 14:57:23,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 14:57:23,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 14:57:23,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e878ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23, skipping insertion in model container [2018-10-22 14:57:23,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 14:57:23,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 14:57:23,766 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 14:57:23,771 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 14:57:23,788 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 14:57:23,804 INFO L193 MainTranslator]: Completed translation [2018-10-22 14:57:23,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23 WrapperNode [2018-10-22 14:57:23,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 14:57:23,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 14:57:23,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 14:57:23,806 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 14:57:23,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 14:57:23,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 14:57:23,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 14:57:23,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 14:57:23,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... [2018-10-22 14:57:23,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 14:57:23,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 14:57:23,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 14:57:23,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 14:57:23,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 14:57:23,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 14:57:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 14:57:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 14:57:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 14:57:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 14:57:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 14:57:23,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 14:57:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 14:57:24,166 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 14:57:24,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:24 BoogieIcfgContainer [2018-10-22 14:57:24,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 14:57:24,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 14:57:24,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 14:57:24,171 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 14:57:24,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:57:23" (1/3) ... [2018-10-22 14:57:24,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a56e26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:57:24, skipping insertion in model container [2018-10-22 14:57:24,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:23" (2/3) ... [2018-10-22 14:57:24,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a56e26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:57:24, skipping insertion in model container [2018-10-22 14:57:24,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:24" (3/3) ... [2018-10-22 14:57:24,175 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_03_false-unreach-call_true-termination.i [2018-10-22 14:57:24,183 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 14:57:24,190 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 14:57:24,207 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 14:57:24,247 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 14:57:24,248 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 14:57:24,248 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 14:57:24,248 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 14:57:24,248 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 14:57:24,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 14:57:24,249 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 14:57:24,249 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 14:57:24,249 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 14:57:24,269 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-22 14:57:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 14:57:24,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 14:57:24,276 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 14:57:24,279 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 14:57:24,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 14:57:24,285 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-10-22 14:57:24,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 14:57:24,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:24,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 14:57:24,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:24,334 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 14:57:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 14:57:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 14:57:24,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 14:57:24,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 14:57:24,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 14:57:24,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 14:57:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 14:57:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 14:57:24,620 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2018-10-22 14:57:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 14:57:24,768 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-10-22 14:57:24,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 14:57:24,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-10-22 14:57:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 14:57:24,781 INFO L225 Difference]: With dead ends: 40 [2018-10-22 14:57:24,781 INFO L226 Difference]: Without dead ends: 13 [2018-10-22 14:57:24,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 14:57:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-22 14:57:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-22 14:57:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 14:57:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-22 14:57:24,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-22 14:57:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 14:57:24,824 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-22 14:57:24,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 14:57:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-22 14:57:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 14:57:24,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 14:57:24,825 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 14:57:24,825 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 14:57:24,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 14:57:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1707104042, now seen corresponding path program 1 times [2018-10-22 14:57:24,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 14:57:24,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:24,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 14:57:24,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:24,828 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 14:57:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 14:57:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 14:57:24,876 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 14:57:24,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:57:24 BoogieIcfgContainer [2018-10-22 14:57:24,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 14:57:24,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 14:57:24,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 14:57:24,902 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 14:57:24,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:24" (3/4) ... [2018-10-22 14:57:24,905 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-22 14:57:24,949 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 14:57:24,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 14:57:24,950 INFO L168 Benchmark]: Toolchain (without parser) took 1423.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:24,951 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:24,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.98 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 935.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:24,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.34 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:24,953 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:24,954 INFO L168 Benchmark]: RCFGBuilder took 315.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -204.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:24,955 INFO L168 Benchmark]: TraceAbstraction took 733.39 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:24,955 INFO L168 Benchmark]: Witness Printer took 47.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:24,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.98 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 935.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.34 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 315.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -204.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 733.39 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 7 SDslu, 52 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...