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.epf -i ../../../trunk/examples/svcomp/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:51:32,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:51:32,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:51:32,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:51:32,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:51:32,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:51:32,485 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:51:32,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:51:32,489 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:51:32,489 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:51:32,490 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:51:32,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:51:32,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:51:32,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:51:32,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:51:32,494 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:51:32,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:51:32,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:51:32,499 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:51:32,501 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:51:32,502 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:51:32,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:51:32,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:51:32,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:51:32,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:51:32,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:51:32,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:51:32,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:51:32,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:51:32,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:51:32,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:51:32,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 16:51:32,514 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.epf [2018-11-07 16:51:32,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:51:32,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:51:32,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:51:32,530 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:51:32,530 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:51:32,531 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:51:32,531 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:51:32,531 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:51:32,531 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:51:32,531 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:51:32,532 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:51:32,532 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:51:32,533 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:51:32,533 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:51:32,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:51:32,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:51:32,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:51:32,534 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:51:32,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:51:32,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:51:32,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:51:32,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:51:32,535 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:51:32,535 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:51:32,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:51:32,535 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:51:32,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:51:32,536 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:51:32,536 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:51:32,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:51:32,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:51:32,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:51:32,537 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:51:32,537 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:51:32,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:51:32,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:51:32,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:51:32,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:51:32,599 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:51:32,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 16:51:32,661 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5c1452b/bf8a714ea2d846f7bf71c974785f823e/FLAGedfffe09c [2018-11-07 16:51:33,075 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:51:33,076 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 16:51:33,082 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5c1452b/bf8a714ea2d846f7bf71c974785f823e/FLAGedfffe09c [2018-11-07 16:51:33,100 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5c1452b/bf8a714ea2d846f7bf71c974785f823e [2018-11-07 16:51:33,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:51:33,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:51:33,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:51:33,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:51:33,122 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:51:33,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad74b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33, skipping insertion in model container [2018-11-07 16:51:33,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:51:33,157 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:51:33,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:51:33,364 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:51:33,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:51:33,397 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:51:33,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33 WrapperNode [2018-11-07 16:51:33,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:51:33,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:51:33,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:51:33,399 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:51:33,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:51:33,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:51:33,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:51:33,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:51:33,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (1/1) ... [2018-11-07 16:51:33,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:51:33,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:51:33,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:51:33,449 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:51:33,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (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 16:51:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:51:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:51:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:51:33,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:51:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:51:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:51:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 16:51:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 16:51:33,934 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:51:33,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:33 BoogieIcfgContainer [2018-11-07 16:51:33,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:51:33,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:51:33,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:51:33,939 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:51:33,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:51:33" (1/3) ... [2018-11-07 16:51:33,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:33, skipping insertion in model container [2018-11-07 16:51:33,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:51:33" (2/3) ... [2018-11-07 16:51:33,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a95cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:51:33, skipping insertion in model container [2018-11-07 16:51:33,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:51:33" (3/3) ... [2018-11-07 16:51:33,943 INFO L112 eAbstractionObserver]: Analyzing ICFG const_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 16:51:33,952 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:51:33,958 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:51:33,971 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:51:34,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:51:34,012 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:51:34,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:51:34,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:51:34,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:51:34,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:51:34,013 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:51:34,013 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:51:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-07 16:51:34,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 16:51:34,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:51:34,043 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:51:34,048 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:51:34,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:51:34,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2066228947, now seen corresponding path program 1 times [2018-11-07 16:51:34,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:51:34,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:51:34,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:51:34,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:51:34,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:51:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:51:34,314 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 16:51:34,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:51:34,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 16:51:34,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:51:34,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 16:51:34,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 16:51:34,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:51:34,335 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 3 states. [2018-11-07 16:51:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:51:34,362 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2018-11-07 16:51:34,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 16:51:34,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-07 16:51:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:51:34,373 INFO L225 Difference]: With dead ends: 37 [2018-11-07 16:51:34,373 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 16:51:34,377 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:51:34,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 16:51:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 16:51:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 16:51:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-07 16:51:34,418 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2018-11-07 16:51:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:51:34,419 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-07 16:51:34,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 16:51:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-07 16:51:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 16:51:34,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:51:34,420 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:51:34,420 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:51:34,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:51:34,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2008970645, now seen corresponding path program 1 times [2018-11-07 16:51:34,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:51:34,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:51:34,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:51:34,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:51:34,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:51:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:51:34,587 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 16:51:34,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:51:34,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 16:51:34,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:51:34,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 16:51:34,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 16:51:34,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 16:51:34,590 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-11-07 16:51:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:51:34,692 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-11-07 16:51:34,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 16:51:34,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-07 16:51:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:51:34,693 INFO L225 Difference]: With dead ends: 16 [2018-11-07 16:51:34,693 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 16:51:34,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:51:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 16:51:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 16:51:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 16:51:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 16:51:34,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-07 16:51:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:51:34,696 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 16:51:34,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 16:51:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 16:51:34,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 16:51:34,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 16:51:34,763 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 16:51:34,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:51:34,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:51:34,764 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 16:51:34,764 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:51:34,764 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:51:34,764 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2018-11-07 16:51:34,765 INFO L421 ceAbstractionStarter]: At program point L15(lines 11 18) the Hoare annotation is: (and (<= 0 main_~s~0) (<= main_~s~0 0)) [2018-11-07 16:51:34,765 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2018-11-07 16:51:34,765 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 18) no Hoare annotation was computed. [2018-11-07 16:51:34,765 INFO L425 ceAbstractionStarter]: For program point L11-3(lines 11 18) no Hoare annotation was computed. [2018-11-07 16:51:34,765 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2018-11-07 16:51:34,766 INFO L421 ceAbstractionStarter]: At program point L16(line 16) the Hoare annotation is: (and (<= 0 main_~s~0) (<= main_~s~0 0)) [2018-11-07 16:51:34,766 INFO L425 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2018-11-07 16:51:34,766 INFO L425 ceAbstractionStarter]: For program point L12-2(lines 11 18) no Hoare annotation was computed. [2018-11-07 16:51:34,767 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 16:51:34,767 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:51:34,767 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 16:51:34,767 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 16:51:34,767 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 16:51:34,768 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:51:34,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:51:34 BoogieIcfgContainer [2018-11-07 16:51:34,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 16:51:34,781 INFO L168 Benchmark]: Toolchain (without parser) took 1668.04 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -719.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2018-11-07 16:51:34,783 INFO L168 Benchmark]: CDTParser took 0.20 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 16:51:34,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.98 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 16:51:34,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.90 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 16:51:34,786 INFO L168 Benchmark]: Boogie Preprocessor took 26.10 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 16:51:34,786 INFO L168 Benchmark]: RCFGBuilder took 486.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-11-07 16:51:34,788 INFO L168 Benchmark]: TraceAbstraction took 844.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2018-11-07 16:51:34,793 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.98 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 22.90 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 26.10 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 486.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.9 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 844.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 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: 11]: Loop Invariant Derived loop invariant: 0 <= s && s <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 32 SDtfs, 14 SDslu, 37 SDs, 0 SdLazy, 11 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, 0.2s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 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...