./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loops/terminator_02_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_02_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 73643ecf8e1581c13142517bcc63dc5d77c96d29 ........................................................................................................................................................................................................................................................................... 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 14:57:21,425 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 14:57:21,427 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 14:57:21,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 14:57:21,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 14:57:21,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 14:57:21,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 14:57:21,450 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 14:57:21,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 14:57:21,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 14:57:21,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 14:57:21,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 14:57:21,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 14:57:21,461 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 14:57:21,469 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 14:57:21,470 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 14:57:21,472 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 14:57:21,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 14:57:21,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 14:57:21,483 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 14:57:21,484 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 14:57:21,485 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 14:57:21,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 14:57:21,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 14:57:21,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 14:57:21,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 14:57:21,494 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 14:57:21,495 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 14:57:21,496 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 14:57:21,498 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 14:57:21,499 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 14:57:21,500 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 14:57:21,500 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 14:57:21,501 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 14:57:21,503 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 14:57:21,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 14:57:21,505 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 14:57:21,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 14:57:21,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 14:57:21,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 14:57:21,534 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 14:57:21,535 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 14:57:21,535 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 14:57:21,535 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 14:57:21,535 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 14:57:21,535 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 14:57:21,536 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 14:57:21,540 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 14:57:21,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 14:57:21,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 14:57:21,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 14:57:21,542 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 14:57:21,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 14:57:21,542 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 14:57:21,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 14:57:21,543 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 14:57:21,545 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 14:57:21,546 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 14:57:21,546 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 14:57:21,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 14:57:21,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 14:57:21,547 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 14:57:21,547 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 14:57:21,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 14:57:21,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 14:57:21,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 14:57:21,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 14:57:21,548 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 14:57:21,551 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 14:57:21,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 14:57:21,551 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 14:57:21,552 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 -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-10-22 14:57:21,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 14:57:21,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 14:57:21,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 14:57:21,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 14:57:21,654 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 14:57:21,654 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-22 14:57:21,719 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f22f249f/442612ac1679424091ae5bf933179652/FLAG8d92af7f6 [2018-10-22 14:57:22,144 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 14:57:22,144 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-22 14:57:22,151 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f22f249f/442612ac1679424091ae5bf933179652/FLAG8d92af7f6 [2018-10-22 14:57:22,165 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f22f249f/442612ac1679424091ae5bf933179652 [2018-10-22 14:57:22,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 14:57:22,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 14:57:22,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 14:57:22,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 14:57:22,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 14:57:22,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677dc657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22, skipping insertion in model container [2018-10-22 14:57:22,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 14:57:22,214 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 14:57:22,440 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 14:57:22,446 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 14:57:22,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 14:57:22,482 INFO L193 MainTranslator]: Completed translation [2018-10-22 14:57:22,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22 WrapperNode [2018-10-22 14:57:22,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 14:57:22,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 14:57:22,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 14:57:22,484 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 14:57:22,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 14:57:22,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 14:57:22,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 14:57:22,506 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 14:57:22,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (1/1) ... [2018-10-22 14:57:22,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 14:57:22,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 14:57:22,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 14:57:22,526 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 14:57:22,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (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 14:57:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 14:57:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 14:57:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 14:57:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 14:57:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 14:57:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 14:57:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 14:57:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 14:57:22,913 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 14:57:22,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:22 BoogieIcfgContainer [2018-10-22 14:57:22,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 14:57:22,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 14:57:22,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 14:57:22,930 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 14:57:22,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:57:22" (1/3) ... [2018-10-22 14:57:22,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3167c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:57:22, skipping insertion in model container [2018-10-22 14:57:22,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:57:22" (2/3) ... [2018-10-22 14:57:22,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3167c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:57:22, skipping insertion in model container [2018-10-22 14:57:22,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:22" (3/3) ... [2018-10-22 14:57:22,937 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-10-22 14:57:22,956 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 14:57:22,966 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 14:57:22,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 14:57:23,035 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 14:57:23,036 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 14:57:23,036 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 14:57:23,036 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 14:57:23,036 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 14:57:23,036 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 14:57:23,037 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 14:57:23,037 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 14:57:23,037 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 14:57:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-22 14:57:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 14:57:23,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 14:57:23,068 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 14:57:23,071 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 14:57:23,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 14:57:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-10-22 14:57:23,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 14:57:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:23,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 14:57:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:23,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 14:57:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 14:57:23,200 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 14:57:23,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 14:57:23,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 14:57:23,202 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 14:57:23,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 14:57:23,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 14:57:23,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 14:57:23,223 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-22 14:57:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 14:57:23,246 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-22 14:57:23,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 14:57:23,247 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-22 14:57:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 14:57:23,257 INFO L225 Difference]: With dead ends: 32 [2018-10-22 14:57:23,257 INFO L226 Difference]: Without dead ends: 13 [2018-10-22 14:57:23,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 14:57:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-22 14:57:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-22 14:57:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-22 14:57:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-22 14:57:23,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-22 14:57:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 14:57:23,301 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-22 14:57:23,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 14:57:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-22 14:57:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 14:57:23,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 14:57:23,302 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 14:57:23,303 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 14:57:23,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 14:57:23,303 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-10-22 14:57:23,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 14:57:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:23,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 14:57:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 14:57:23,305 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 14:57:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 14:57:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 14:57:23,351 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 14:57:23,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:57:23 BoogieIcfgContainer [2018-10-22 14:57:23,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 14:57:23,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 14:57:23,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 14:57:23,393 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 14:57:23,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:57:22" (3/4) ... [2018-10-22 14:57:23,399 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-22 14:57:23,465 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 14:57:23,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 14:57:23,466 INFO L168 Benchmark]: Toolchain (without parser) took 1296.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -111.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:23,470 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:23,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.47 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:23,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.59 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:23,473 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:23,474 INFO L168 Benchmark]: RCFGBuilder took 389.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:23,475 INFO L168 Benchmark]: TraceAbstraction took 475.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-10-22 14:57:23,476 INFO L168 Benchmark]: Witness Printer took 72.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 14:57:23,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.47 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 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 21.59 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 389.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 475.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 72.19 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100