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/while_infinite_loop_1_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 09:05:05,388 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 09:05:05,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 09:05:05,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 09:05:05,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 09:05:05,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 09:05:05,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 09:05:05,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 09:05:05,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 09:05:05,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 09:05:05,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 09:05:05,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 09:05:05,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 09:05:05,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 09:05:05,423 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 09:05:05,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 09:05:05,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 09:05:05,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 09:05:05,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 09:05:05,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 09:05:05,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 09:05:05,436 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 09:05:05,442 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 09:05:05,443 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 09:05:05,443 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 09:05:05,445 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 09:05:05,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 09:05:05,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 09:05:05,451 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 09:05:05,452 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 09:05:05,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 09:05:05,458 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 09:05:05,460 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 09:05:05,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 09:05:05,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 09:05:05,493 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 09:05:05,494 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 09:05:05,494 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 09:05:05,494 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 09:05:05,494 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 09:05:05,494 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 09:05:05,495 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 09:05:05,495 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 09:05:05,495 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 09:05:05,495 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 09:05:05,495 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 09:05:05,496 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 09:05:05,496 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 09:05:05,497 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 09:05:05,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 09:05:05,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 09:05:05,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 09:05:05,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 09:05:05,498 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 09:05:05,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:05:05,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 09:05:05,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 09:05:05,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 09:05:05,500 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 09:05:05,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 09:05:05,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 09:05:05,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 09:05:05,562 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 09:05:05,562 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 09:05:05,563 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-27 09:05:05,623 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/840983927/4540e99f5bbb4e16b06bd37ef8d21970/FLAGced088073 [2018-10-27 09:05:06,031 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 09:05:06,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-27 09:05:06,037 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/840983927/4540e99f5bbb4e16b06bd37ef8d21970/FLAGced088073 [2018-10-27 09:05:06,051 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/840983927/4540e99f5bbb4e16b06bd37ef8d21970 [2018-10-27 09:05:06,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 09:05:06,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 09:05:06,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 09:05:06,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 09:05:06,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 09:05:06,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7687bea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06, skipping insertion in model container [2018-10-27 09:05:06,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 09:05:06,105 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 09:05:06,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:05:06,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 09:05:06,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:05:06,324 INFO L193 MainTranslator]: Completed translation [2018-10-27 09:05:06,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06 WrapperNode [2018-10-27 09:05:06,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 09:05:06,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 09:05:06,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 09:05:06,326 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 09:05:06,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 09:05:06,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 09:05:06,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 09:05:06,352 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 09:05:06,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (1/1) ... [2018-10-27 09:05:06,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 09:05:06,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 09:05:06,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 09:05:06,376 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 09:05:06,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (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 09:05:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 09:05:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 09:05:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 09:05:06,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 09:05:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 09:05:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 09:05:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 09:05:06,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 09:05:06,720 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 09:05:06,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:05:06 BoogieIcfgContainer [2018-10-27 09:05:06,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 09:05:06,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 09:05:06,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 09:05:06,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 09:05:06,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 09:05:06" (1/3) ... [2018-10-27 09:05:06,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d4b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:05:06, skipping insertion in model container [2018-10-27 09:05:06,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:05:06" (2/3) ... [2018-10-27 09:05:06,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d4b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:05:06, skipping insertion in model container [2018-10-27 09:05:06,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:05:06" (3/3) ... [2018-10-27 09:05:06,729 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-27 09:05:06,738 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 09:05:06,746 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 09:05:06,765 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 09:05:06,805 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 09:05:06,806 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 09:05:06,806 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 09:05:06,806 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 09:05:06,806 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 09:05:06,806 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 09:05:06,806 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 09:05:06,807 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 09:05:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-27 09:05:06,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 09:05:06,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:05:06,833 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:05:06,836 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:05:06,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:05:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1870526464, now seen corresponding path program 1 times [2018-10-27 09:05:06,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:05:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:06,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:05:06,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:06,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:05:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:05:06,955 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 09:05:06,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:05:06,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 09:05:06,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:05:06,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 09:05:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 09:05:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:05:06,977 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-27 09:05:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:05:07,002 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-10-27 09:05:07,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 09:05:07,004 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-27 09:05:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:05:07,013 INFO L225 Difference]: With dead ends: 28 [2018-10-27 09:05:07,013 INFO L226 Difference]: Without dead ends: 14 [2018-10-27 09:05:07,017 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 09:05:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-27 09:05:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 09:05:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 09:05:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-27 09:05:07,060 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-10-27 09:05:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:05:07,060 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-27 09:05:07,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 09:05:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-27 09:05:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 09:05:07,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:05:07,062 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:05:07,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:05:07,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:05:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1863838843, now seen corresponding path program 1 times [2018-10-27 09:05:07,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:05:07,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:07,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:05:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:07,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:05:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:05:07,282 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 09:05:07,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:05:07,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 09:05:07,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:05:07,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 09:05:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 09:05:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 09:05:07,286 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-27 09:05:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:05:07,384 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-27 09:05:07,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 09:05:07,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-27 09:05:07,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:05:07,387 INFO L225 Difference]: With dead ends: 14 [2018-10-27 09:05:07,387 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 09:05:07,388 INFO L605 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 [2018-10-27 09:05:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 09:05:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 09:05:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 09:05:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 09:05:07,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-10-27 09:05:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:05:07,390 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 09:05:07,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 09:05:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 09:05:07,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 09:05:07,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 09:05:07,436 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 09:05:07,437 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:05:07,437 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:05:07,437 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 09:05:07,438 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 09:05:07,438 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 09:05:07,438 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2018-10-27 09:05:07,438 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2018-10-27 09:05:07,439 INFO L421 ceAbstractionStarter]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2018-10-27 09:05:07,439 INFO L421 ceAbstractionStarter]: At program point L15-1(lines 13 16) the Hoare annotation is: (= main_~x~0 0) [2018-10-27 09:05:07,439 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2018-10-27 09:05:07,439 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 16) no Hoare annotation was computed. [2018-10-27 09:05:07,440 INFO L421 ceAbstractionStarter]: At program point L13-3(lines 13 16) the Hoare annotation is: false [2018-10-27 09:05:07,440 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-27 09:05:07,440 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-27 09:05:07,440 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-27 09:05:07,440 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-27 09:05:07,441 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-27 09:05:07,441 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-27 09:05:07,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 09:05:07 BoogieIcfgContainer [2018-10-27 09:05:07,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 09:05:07,460 INFO L168 Benchmark]: Toolchain (without parser) took 1397.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -752.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 09:05:07,465 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. [2018-10-27 09:05:07,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.14 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 09:05:07,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.18 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 09:05:07,468 INFO L168 Benchmark]: Boogie Preprocessor took 23.83 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 09:05:07,471 INFO L168 Benchmark]: RCFGBuilder took 344.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-27 09:05:07,472 INFO L168 Benchmark]: TraceAbstraction took 737.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2018-10-27 09:05:07,483 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 261.14 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 26.18 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 23.83 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 344.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 737.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 13]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 5 SDslu, 21 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=19occurred 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, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 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, 281 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...