java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:19:49,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:19:49,831 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:19:49,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:19:49,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:19:49,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:19:49,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:19:49,854 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:19:49,856 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:19:49,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:19:49,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:19:49,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:19:49,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:19:49,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:19:49,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:19:49,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:19:49,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:19:49,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:19:49,880 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:19:49,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:19:49,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:19:49,887 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:19:49,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 22:19:49,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 22:19:49,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 22:19:49,893 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 22:19:49,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 22:19:49,896 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 22:19:49,896 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 22:19:49,899 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 22:19:49,899 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 22:19:49,901 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 22:19:49,903 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:19:49,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:19:49,931 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:19:49,932 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:19:49,932 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:19:49,932 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:19:49,933 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:19:49,933 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:19:49,934 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:19:49,934 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:19:49,934 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:19:49,934 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:19:49,934 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:19:49,935 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:19:49,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:19:49,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:19:49,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:19:49,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:19:49,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:19:49,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:19:49,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:19:49,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:19:49,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:19:49,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:19:49,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:19:49,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:19:49,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:19:49,939 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:19:49,940 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:19:49,941 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:19:49,941 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:19:49,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:19:50,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:19:50,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:19:50,015 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:19:50,016 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:19:50,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:50,080 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b8c8a66/a9d84c4cf3584eaa84ba88bd9829b416/FLAGe6444bd3e [2018-11-07 22:19:50,496 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:19:50,497 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:50,505 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b8c8a66/a9d84c4cf3584eaa84ba88bd9829b416/FLAGe6444bd3e [2018-11-07 22:19:50,519 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b8c8a66/a9d84c4cf3584eaa84ba88bd9829b416 [2018-11-07 22:19:50,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:19:50,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:19:50,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:19:50,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:19:50,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:19:50,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6659c59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50, skipping insertion in model container [2018-11-07 22:19:50,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:19:50,571 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:19:50,813 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:19:50,817 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:19:50,838 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:19:50,853 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:19:50,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50 WrapperNode [2018-11-07 22:19:50,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:19:50,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:19:50,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:19:50,855 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:19:50,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:19:50,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:19:50,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:19:50,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:19:50,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... [2018-11-07 22:19:50,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:19:50,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:19:50,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:19:50,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:19:50,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 22:19:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:19:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:19:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:19:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:19:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:19:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:19:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 22:19:51,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 22:19:51,394 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:19:51,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:19:51 BoogieIcfgContainer [2018-11-07 22:19:51,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:19:51,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:19:51,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:19:51,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:19:51,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:19:50" (1/3) ... [2018-11-07 22:19:51,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f3a2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:19:51, skipping insertion in model container [2018-11-07 22:19:51,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:50" (2/3) ... [2018-11-07 22:19:51,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f3a2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:19:51, skipping insertion in model container [2018-11-07 22:19:51,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:19:51" (3/3) ... [2018-11-07 22:19:51,404 INFO L112 eAbstractionObserver]: Analyzing ICFG eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:51,413 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:19:51,420 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:19:51,434 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:19:51,468 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:19:51,468 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:19:51,469 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:19:51,469 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:19:51,469 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:19:51,469 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:19:51,469 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:19:51,469 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:19:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-07 22:19:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 22:19:51,495 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:19:51,496 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:19:51,498 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:19:51,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:51,507 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-07 22:19:51,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:19:51,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:51,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:51,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:51,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:19:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:19:51,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:19:51,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 22:19:51,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:19:51,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 22:19:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 22:19:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 22:19:51,628 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-07 22:19:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:19:51,653 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-07 22:19:51,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 22:19:51,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 22:19:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:19:51,664 INFO L225 Difference]: With dead ends: 32 [2018-11-07 22:19:51,664 INFO L226 Difference]: Without dead ends: 13 [2018-11-07 22:19:51,672 INFO L604 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 [2018-11-07 22:19:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-07 22:19:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-07 22:19:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-07 22:19:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-07 22:19:51,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-07 22:19:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:19:51,709 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-07 22:19:51,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 22:19:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-07 22:19:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-07 22:19:51,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:19:51,711 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:19:51,711 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:19:51,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-11-07 22:19:51,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:19:51,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:51,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:51,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:51,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:19:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:19:52,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:19:52,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 22:19:52,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:19:52,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:19:52,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:19:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 22:19:52,007 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2018-11-07 22:19:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:19:52,242 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-07 22:19:52,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 22:19:52,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-07 22:19:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:19:52,243 INFO L225 Difference]: With dead ends: 13 [2018-11-07 22:19:52,243 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:19:52,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 22:19:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:19:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:19:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:19:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:19:52,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-07 22:19:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:19:52,246 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:19:52,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:19:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:19:52,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:19:52,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:19:52,324 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 22:19:52,324 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:19:52,324 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:19:52,324 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:19:52,324 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:19:52,324 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:19:52,325 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-07 22:19:52,325 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-07 22:19:52,325 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-07 22:19:52,325 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-11-07 22:19:52,325 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 20) no Hoare annotation was computed. [2018-11-07 22:19:52,325 INFO L421 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2018-11-07 22:19:52,325 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-07 22:19:52,326 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2018-11-07 22:19:52,326 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 22:19:52,329 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:19:52,329 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 22:19:52,329 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 22:19:52,329 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 22:19:52,329 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:19:52,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:19:52 BoogieIcfgContainer [2018-11-07 22:19:52,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:19:52,341 INFO L168 Benchmark]: Toolchain (without parser) took 1811.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -728.8 MB). Peak memory consumption was 503.7 kB. Max. memory is 7.1 GB. [2018-11-07 22:19:52,344 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 22:19:52,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.48 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. [2018-11-07 22:19:52,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.45 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. [2018-11-07 22:19:52,346 INFO L168 Benchmark]: Boogie Preprocessor took 29.10 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. [2018-11-07 22:19:52,347 INFO L168 Benchmark]: RCFGBuilder took 486.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -769.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-07 22:19:52,348 INFO L168 Benchmark]: TraceAbstraction took 943.54 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2018-11-07 22:19:52,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.48 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 25.45 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 29.10 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 486.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -769.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 943.54 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: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: w == x && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 2 SDslu, 22 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 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...