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/trex04_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 09:04:58,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 09:04:58,169 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 09:04:58,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 09:04:58,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 09:04:58,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 09:04:58,190 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 09:04:58,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 09:04:58,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 09:04:58,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 09:04:58,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 09:04:58,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 09:04:58,201 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 09:04:58,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 09:04:58,212 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 09:04:58,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 09:04:58,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 09:04:58,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 09:04:58,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 09:04:58,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 09:04:58,226 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 09:04:58,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 09:04:58,230 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 09:04:58,230 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 09:04:58,231 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 09:04:58,231 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 09:04:58,233 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 09:04:58,235 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 09:04:58,236 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 09:04:58,237 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 09:04:58,237 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 09:04:58,239 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 09:04:58,242 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 09:04:58,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 09:04:58,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 09:04:58,267 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 09:04:58,267 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 09:04:58,268 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 09:04:58,268 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 09:04:58,268 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 09:04:58,268 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 09:04:58,268 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 09:04:58,269 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 09:04:58,269 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 09:04:58,269 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 09:04:58,269 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 09:04:58,269 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 09:04:58,273 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 09:04:58,273 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 09:04:58,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 09:04:58,274 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 09:04:58,274 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 09:04:58,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 09:04:58,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 09:04:58,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 09:04:58,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 09:04:58,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 09:04:58,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 09:04:58,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 09:04:58,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:04:58,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 09:04:58,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 09:04:58,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 09:04:58,278 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 09:04:58,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 09:04:58,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 09:04:58,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 09:04:58,279 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 09:04:58,279 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 09:04:58,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 09:04:58,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 09:04:58,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 09:04:58,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 09:04:58,376 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 09:04:58,377 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-27 09:04:58,459 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7634a2389/36914c8b62c747849571155405acc91e/FLAG5bdb211af [2018-10-27 09:04:58,999 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 09:04:59,000 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04_true-unreach-call_false-termination.i [2018-10-27 09:04:59,008 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7634a2389/36914c8b62c747849571155405acc91e/FLAG5bdb211af [2018-10-27 09:04:59,022 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7634a2389/36914c8b62c747849571155405acc91e [2018-10-27 09:04:59,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 09:04:59,037 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 09:04:59,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 09:04:59,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 09:04:59,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 09:04:59,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59, skipping insertion in model container [2018-10-27 09:04:59,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 09:04:59,082 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 09:04:59,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:04:59,292 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 09:04:59,319 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 09:04:59,336 INFO L193 MainTranslator]: Completed translation [2018-10-27 09:04:59,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59 WrapperNode [2018-10-27 09:04:59,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 09:04:59,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 09:04:59,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 09:04:59,339 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 09:04:59,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 09:04:59,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 09:04:59,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 09:04:59,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 09:04:59,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... [2018-10-27 09:04:59,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 09:04:59,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 09:04:59,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 09:04:59,401 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 09:04:59,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 09:04:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 09:04:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 09:04:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 09:04:59,574 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 09:04:59,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 09:04:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 09:04:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 09:04:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 09:04:59,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 09:04:59,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 09:05:00,065 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 09:05:00,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:05:00 BoogieIcfgContainer [2018-10-27 09:05:00,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 09:05:00,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 09:05:00,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 09:05:00,073 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 09:05:00,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 09:04:59" (1/3) ... [2018-10-27 09:05:00,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490a2905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:05:00, skipping insertion in model container [2018-10-27 09:05:00,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 09:04:59" (2/3) ... [2018-10-27 09:05:00,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490a2905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 09:05:00, skipping insertion in model container [2018-10-27 09:05:00,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 09:05:00" (3/3) ... [2018-10-27 09:05:00,077 INFO L112 eAbstractionObserver]: Analyzing ICFG trex04_true-unreach-call_false-termination.i [2018-10-27 09:05:00,089 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 09:05:00,104 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 09:05:00,119 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 09:05:00,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 09:05:00,156 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 09:05:00,156 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 09:05:00,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 09:05:00,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 09:05:00,157 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 09:05:00,158 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 09:05:00,158 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 09:05:00,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-10-27 09:05:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-27 09:05:00,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:05:00,189 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:05:00,192 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:05:00,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:05:00,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1294249659, now seen corresponding path program 1 times [2018-10-27 09:05:00,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:05:00,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:00,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:05:00,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:00,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:05:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:05:00,343 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 09:05:00,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:05:00,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 09:05:00,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:05:00,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 09:05:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 09:05:00,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 09:05:00,368 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-10-27 09:05:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:05:00,400 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2018-10-27 09:05:00,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 09:05:00,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-10-27 09:05:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:05:00,412 INFO L225 Difference]: With dead ends: 42 [2018-10-27 09:05:00,412 INFO L226 Difference]: Without dead ends: 25 [2018-10-27 09:05:00,416 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 09:05:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-27 09:05:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-27 09:05:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-27 09:05:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-10-27 09:05:00,464 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2018-10-27 09:05:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:05:00,465 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-10-27 09:05:00,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 09:05:00,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2018-10-27 09:05:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 09:05:00,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:05:00,467 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 09:05:00,468 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:05:00,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:05:00,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1720438887, now seen corresponding path program 1 times [2018-10-27 09:05:00,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:05:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:00,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:05:00,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:05:00,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:05:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:05:00,615 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 09:05:00,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 09:05:00,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 09:05:00,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:05:00,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 09:05:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 09:05:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 09:05:00,619 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 5 states. [2018-10-27 09:05:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:05:00,708 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2018-10-27 09:05:00,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 09:05:00,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-10-27 09:05:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:05:00,709 INFO L225 Difference]: With dead ends: 25 [2018-10-27 09:05:00,709 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 09:05:00,711 INFO L605 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 [2018-10-27 09:05:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 09:05:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 09:05:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 09:05:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 09:05:00,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-10-27 09:05:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:05:00,712 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 09:05:00,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 09:05:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 09:05:00,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 09:05:00,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 09:05:00,770 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-27 09:05:00,770 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:05:00,770 INFO L425 ceAbstractionStarter]: For program point fooEXIT(lines 11 18) no Hoare annotation was computed. [2018-10-27 09:05:00,770 INFO L428 ceAbstractionStarter]: At program point fooENTRY(lines 11 18) the Hoare annotation is: true [2018-10-27 09:05:00,771 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-27 09:05:00,771 INFO L425 ceAbstractionStarter]: For program point L16-1(lines 11 18) no Hoare annotation was computed. [2018-10-27 09:05:00,771 INFO L425 ceAbstractionStarter]: For program point L15-2(lines 12 18) no Hoare annotation was computed. [2018-10-27 09:05:00,771 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 09:05:00,771 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-27 09:05:00,771 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 19 35) no Hoare annotation was computed. [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 20 35) no Hoare annotation was computed. [2018-10-27 09:05:00,772 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 19 35) no Hoare annotation was computed. [2018-10-27 09:05:00,773 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 33) no Hoare annotation was computed. [2018-10-27 09:05:00,773 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 19 35) the Hoare annotation is: true [2018-10-27 09:05:00,773 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-10-27 09:05:00,773 INFO L425 ceAbstractionStarter]: For program point L30-2(lines 20 35) no Hoare annotation was computed. [2018-10-27 09:05:00,773 INFO L428 ceAbstractionStarter]: At program point L28-1(line 28) the Hoare annotation is: true [2018-10-27 09:05:00,773 INFO L421 ceAbstractionStarter]: At program point L30-3(lines 30 33) the Hoare annotation is: (<= main_~x~0 0) [2018-10-27 09:05:00,774 INFO L428 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: true [2018-10-27 09:05:00,774 INFO L425 ceAbstractionStarter]: For program point L28-3(lines 20 35) no Hoare annotation was computed. [2018-10-27 09:05:00,774 INFO L425 ceAbstractionStarter]: For program point L26-2(line 26) no Hoare annotation was computed. [2018-10-27 09:05:00,774 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-27 09:05:00,774 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-27 09:05:00,775 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-27 09:05:00,775 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-27 09:05:00,775 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-27 09:05:00,775 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-27 09:05:00,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 09:05:00 BoogieIcfgContainer [2018-10-27 09:05:00,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 09:05:00,780 INFO L168 Benchmark]: Toolchain (without parser) took 1743.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -734.2 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2018-10-27 09:05:00,783 INFO L168 Benchmark]: CDTParser took 0.24 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 09:05:00,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.74 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 09:05:00,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.80 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 09:05:00,785 INFO L168 Benchmark]: Boogie Preprocessor took 35.93 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 09:05:00,786 INFO L168 Benchmark]: RCFGBuilder took 665.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-27 09:05:00,787 INFO L168 Benchmark]: TraceAbstraction took 711.66 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: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-27 09:05:00,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 299.74 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 25.80 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 35.93 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 665.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 711.66 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: 41.8 MB). Peak memory consumption was 41.8 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 1 SDslu, 82 SDs, 0 SdLazy, 5 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 11 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 577 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...