java -Xmx8000000000 -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 ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loops/nec11_false-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 15:59:17,472 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 15:59:17,475 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 15:59:17,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 15:59:17,493 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 15:59:17,494 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 15:59:17,496 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 15:59:17,498 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 15:59:17,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 15:59:17,501 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 15:59:17,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 15:59:17,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 15:59:17,503 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 15:59:17,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 15:59:17,506 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 15:59:17,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 15:59:17,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 15:59:17,509 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 15:59:17,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 15:59:17,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 15:59:17,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 15:59:17,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 15:59:17,519 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 15:59:17,519 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 15:59:17,519 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 15:59:17,520 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 15:59:17,521 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 15:59:17,522 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 15:59:17,523 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 15:59:17,524 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 15:59:17,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 15:59:17,525 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 15:59:17,526 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 15:59:17,526 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 15:59:17,527 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 15:59:17,528 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 15:59:17,528 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 15:59:17,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 15:59:17,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 15:59:17,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 15:59:17,559 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 15:59:17,559 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 15:59:17,559 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 15:59:17,559 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 15:59:17,560 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 15:59:17,560 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 15:59:17,560 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 15:59:17,563 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 15:59:17,564 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 15:59:17,565 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 15:59:17,566 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 15:59:17,566 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 15:59:17,566 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 15:59:17,566 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 15:59:17,567 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 15:59:17,567 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 15:59:17,567 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 15:59:17,567 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 15:59:17,567 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 15:59:17,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 15:59:17,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 15:59:17,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:59:17,570 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 15:59:17,570 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 15:59:17,570 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 15:59:17,570 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 15:59:17,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 15:59:17,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 15:59:17,571 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 15:59:17,571 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 15:59:17,571 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 15:59:17,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 15:59:17,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 15:59:17,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 15:59:17,645 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 15:59:17,646 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 15:59:17,646 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/nec11_false-unreach-call_false-termination.i [2018-10-23 15:59:17,708 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4fb322537/561d1040db9a44cab4c094d1d90535cf/FLAG2eb63414d [2018-10-23 15:59:18,211 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 15:59:18,212 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11_false-unreach-call_false-termination.i [2018-10-23 15:59:18,221 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4fb322537/561d1040db9a44cab4c094d1d90535cf/FLAG2eb63414d [2018-10-23 15:59:18,241 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4fb322537/561d1040db9a44cab4c094d1d90535cf [2018-10-23 15:59:18,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 15:59:18,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 15:59:18,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 15:59:18,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 15:59:18,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 15:59:18,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286813c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18, skipping insertion in model container [2018-10-23 15:59:18,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 15:59:18,306 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 15:59:18,508 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:59:18,513 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 15:59:18,531 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:59:18,547 INFO L193 MainTranslator]: Completed translation [2018-10-23 15:59:18,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18 WrapperNode [2018-10-23 15:59:18,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 15:59:18,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 15:59:18,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 15:59:18,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 15:59:18,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 15:59:18,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 15:59:18,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 15:59:18,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 15:59:18,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (1/1) ... [2018-10-23 15:59:18,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 15:59:18,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 15:59:18,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 15:59:18,598 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 15:59:18,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (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 [2018-10-23 15:59:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 15:59:18,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 15:59:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 15:59:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 15:59:18,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 15:59:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 15:59:18,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 15:59:18,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 15:59:19,016 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 15:59:19,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:59:19 BoogieIcfgContainer [2018-10-23 15:59:19,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 15:59:19,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 15:59:19,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 15:59:19,033 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 15:59:19,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 03:59:18" (1/3) ... [2018-10-23 15:59:19,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21162fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:59:19, skipping insertion in model container [2018-10-23 15:59:19,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:59:18" (2/3) ... [2018-10-23 15:59:19,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21162fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:59:19, skipping insertion in model container [2018-10-23 15:59:19,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:59:19" (3/3) ... [2018-10-23 15:59:19,039 INFO L112 eAbstractionObserver]: Analyzing ICFG nec11_false-unreach-call_false-termination.i [2018-10-23 15:59:19,056 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 15:59:19,067 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 15:59:19,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 15:59:19,159 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 15:59:19,159 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 15:59:19,159 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 15:59:19,159 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 15:59:19,159 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 15:59:19,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 15:59:19,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 15:59:19,160 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 15:59:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-23 15:59:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-23 15:59:19,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:59:19,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:59:19,190 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:59:19,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-10-23 15:59:19,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 15:59:19,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:19,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:19,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:19,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 15:59:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:59:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:59:19,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:59:19,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 15:59:19,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 15:59:19,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 15:59:19,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 15:59:19,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 15:59:19,342 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-10-23 15:59:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:59:19,366 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-10-23 15:59:19,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 15:59:19,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-23 15:59:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:59:19,377 INFO L225 Difference]: With dead ends: 33 [2018-10-23 15:59:19,377 INFO L226 Difference]: Without dead ends: 14 [2018-10-23 15:59:19,381 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 [2018-10-23 15:59:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-23 15:59:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-23 15:59:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-23 15:59:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-10-23 15:59:19,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-10-23 15:59:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:59:19,424 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-10-23 15:59:19,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 15:59:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-10-23 15:59:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 15:59:19,425 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:59:19,425 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:59:19,425 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:59:19,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:59:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-10-23 15:59:19,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 15:59:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:19,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:59:19,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:59:19,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 15:59:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 15:59:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-23 15:59:19,484 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-23 15:59:19,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 03:59:19 BoogieIcfgContainer [2018-10-23 15:59:19,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 15:59:19,519 INFO L168 Benchmark]: Toolchain (without parser) took 1264.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -757.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:59:19,523 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:59:19,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:19,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:59:19,525 INFO L168 Benchmark]: Boogie Preprocessor took 25.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:59:19,526 INFO L168 Benchmark]: RCFGBuilder took 422.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:19,530 INFO L168 Benchmark]: TraceAbstraction took 496.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2018-10-23 15:59:19,538 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 422.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 496.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 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 a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; VAL [c=0, len=0] [L19] COND FALSE !(\read(c)) VAL [c=0, len=0] [L28] CALL __VERIFIER_assert(len==5) 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, 21 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...