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-EXP.epf -i ../../../trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 09:04:55,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 09:04:55,332 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 09:04:55,353 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 09:04:55,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 09:04:55,356 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 09:04:55,359 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 09:04:55,362 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 09:04:55,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 09:04:55,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 09:04:55,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 09:04:55,381 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 09:04:55,383 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 09:04:55,389 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 09:04:55,393 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 09:04:55,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 09:04:55,396 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 09:04:55,398 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 09:04:55,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 09:04:55,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 09:04:55,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 09:04:55,408 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 09:04:55,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 09:04:55,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 09:04:55,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 09:04:55,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 09:04:55,420 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 09:04:55,423 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 09:04:55,424 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 09:04:55,428 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 09:04:55,429 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 09:04:55,432 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 09:04:55,436 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 09:04:55,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 09:04:55,472 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 09:04:55,473 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 09:04:55,474 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 09:04:55,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 09:04:55,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 09:04:55,478 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 09:04:55,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 09:04:55,479 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 09:04:55,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 09:04:55,479 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 09:04:55,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 09:04:55,480 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 09:04:55,480 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 09:04:55,482 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 09:04:55,483 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 09:04:55,483 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 09:04:55,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 09:04:55,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 09:04:55,487 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 09:04:55,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 09:04:55,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 09:04:55,488 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 09:04:55,488 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 09:04:55,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 09:04:55,489 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 09:04:55,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:04:55,490 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 09:04:55,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 09:04:55,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 09:04:55,490 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 09:04:55,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 09:04:55,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 09:04:55,491 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 09:04:55,491 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 09:04:55,492 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 09:04:55,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 09:04:55,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 09:04:55,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 09:04:55,615 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 09:04:55,616 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 09:04:55,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-10-27 09:04:55,708 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125a4c165/f59fb6c5f9434cc5994210ee21101f47/FLAG09de1a97f [2018-10-27 09:04:56,413 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 09:04:56,414 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-10-27 09:04:56,423 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125a4c165/f59fb6c5f9434cc5994210ee21101f47/FLAG09de1a97f [2018-10-27 09:04:56,444 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/125a4c165/f59fb6c5f9434cc5994210ee21101f47 [2018-10-27 09:04:56,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 09:04:56,462 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 09:04:56,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 09:04:56,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 09:04:56,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 09:04:56,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121c62cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56, skipping insertion in model container [2018-10-27 09:04:56,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 09:04:56,541 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 09:04:56,791 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:04:56,797 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 09:04:56,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:04:56,843 INFO L193 MainTranslator]: Completed translation [2018-10-27 09:04:56,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56 WrapperNode [2018-10-27 09:04:56,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 09:04:56,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 09:04:56,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 09:04:56,846 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 09:04:56,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 09:04:56,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 09:04:56,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 09:04:56,883 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 09:04:56,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (1/1) ... [2018-10-27 09:04:56,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 09:04:56,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 09:04:56,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 09:04:56,922 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 09:04:56,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (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 [2018-10-27 09:04:57,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 09:04:57,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 09:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 09:04:57,112 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 09:04:57,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 09:04:57,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 09:04:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 09:04:57,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 09:04:57,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 09:04:57,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 09:04:57,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 09:04:57,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:04:57 BoogieIcfgContainer [2018-10-27 09:04:57,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 09:04:57,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 09:04:57,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 09:04:57,447 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 09:04:57,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 09:04:56" (1/3) ... [2018-10-27 09:04:57,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b624002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:04:57, skipping insertion in model container [2018-10-27 09:04:57,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:56" (2/3) ... [2018-10-27 09:04:57,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b624002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:04:57, skipping insertion in model container [2018-10-27 09:04:57,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:04:57" (3/3) ... [2018-10-27 09:04:57,455 INFO L112 eAbstractionObserver]: Analyzing ICFG trex02_true-unreach-call_true-termination.i [2018-10-27 09:04:57,485 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 09:04:57,506 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 09:04:57,544 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 09:04:57,626 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 09:04:57,626 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 09:04:57,630 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 09:04:57,630 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 09:04:57,630 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 09:04:57,631 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 09:04:57,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 09:04:57,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 09:04:57,675 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-27 09:04:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 09:04:57,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:04:57,692 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:04:57,698 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:04:57,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:04:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1587168562, now seen corresponding path program 1 times [2018-10-27 09:04:57,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:04:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:04:57,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:04:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:04:57,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:04:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:04:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:04:57,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:04:57,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 09:04:57,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:04:57,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 09:04:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 09:04:57,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:04:57,898 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-27 09:04:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:04:57,936 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-10-27 09:04:57,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 09:04:57,938 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-27 09:04:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:04:57,958 INFO L225 Difference]: With dead ends: 36 [2018-10-27 09:04:57,958 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 09:04:57,964 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 [2018-10-27 09:04:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 09:04:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 09:04:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 09:04:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-10-27 09:04:58,033 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-10-27 09:04:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:04:58,034 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-10-27 09:04:58,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 09:04:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-10-27 09:04:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-27 09:04:58,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:04:58,038 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:04:58,038 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:04:58,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:04:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1847555599, now seen corresponding path program 1 times [2018-10-27 09:04:58,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:04:58,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:04:58,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:04:58,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:04:58,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:04:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:04:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 09:04:58,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:04:58,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 09:04:58,379 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:04:58,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 09:04:58,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 09:04:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 09:04:58,382 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-10-27 09:04:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:04:58,600 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-10-27 09:04:58,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 09:04:58,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-27 09:04:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:04:58,605 INFO L225 Difference]: With dead ends: 19 [2018-10-27 09:04:58,605 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 09:04:58,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 09:04:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 09:04:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 09:04:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 09:04:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 09:04:58,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-10-27 09:04:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:04:58,609 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 09:04:58,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 09:04:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 09:04:58,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 09:04:58,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 09:04:58,713 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-27 09:04:58,714 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-27 09:04:58,714 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:04:58,714 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 13) no Hoare annotation was computed. [2018-10-27 09:04:58,714 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 13) the Hoare annotation is: true [2018-10-27 09:04:58,714 INFO L425 ceAbstractionStarter]: For program point fooFINAL(lines 11 13) no Hoare annotation was computed. [2018-10-27 09:04:58,714 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:04:58,715 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2018-10-27 09:04:58,715 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 09:04:58,715 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 09:04:58,715 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 14 22) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-27 09:04:58,716 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 22) no Hoare annotation was computed. [2018-10-27 09:04:58,716 INFO L428 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: true [2018-10-27 09:04:58,716 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 19) no Hoare annotation was computed. [2018-10-27 09:04:58,716 INFO L428 ceAbstractionStarter]: At program point L19-1(lines 16 20) the Hoare annotation is: true [2018-10-27 09:04:58,716 INFO L428 ceAbstractionStarter]: At program point L18-1(line 18) the Hoare annotation is: true [2018-10-27 09:04:58,717 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-10-27 09:04:58,717 INFO L421 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (< 0 |old(~x~0)|) (<= ~x~0 0)) [2018-10-27 09:04:58,717 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 22) no Hoare annotation was computed. [2018-10-27 09:04:58,717 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-10-27 09:04:58,717 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-10-27 09:04:58,718 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-10-27 09:04:58,718 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-27 09:04:58,718 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-27 09:04:58,718 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-27 09:04:58,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 09:04:58 BoogieIcfgContainer [2018-10-27 09:04:58,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 09:04:58,729 INFO L168 Benchmark]: Toolchain (without parser) took 2268.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -716.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:04:58,732 INFO L168 Benchmark]: CDTParser took 0.47 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. [2018-10-27 09:04:58,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.84 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. [2018-10-27 09:04:58,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.64 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. [2018-10-27 09:04:58,736 INFO L168 Benchmark]: Boogie Preprocessor took 38.69 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. [2018-10-27 09:04:58,736 INFO L168 Benchmark]: RCFGBuilder took 518.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -758.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-10-27 09:04:58,738 INFO L168 Benchmark]: TraceAbstraction took 1286.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2018-10-27 09:04:58,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 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. * CACSL2BoogieTranslator took 380.84 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 36.64 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 38.69 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 518.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 699.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -758.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1286.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 6 SDslu, 44 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...