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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:43:08,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:43:08,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:43:08,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:43:08,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:43:08,315 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:43:08,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:43:08,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:43:08,321 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:43:08,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:43:08,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:43:08,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:43:08,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:43:08,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:43:08,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:43:08,327 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:43:08,328 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:43:08,331 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:43:08,333 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:43:08,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:43:08,336 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:43:08,337 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:43:08,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:43:08,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:43:08,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:43:08,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:43:08,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:43:08,344 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:43:08,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:43:08,346 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:43:08,346 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:43:08,347 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:43:08,350 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:43:08,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:43:08,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:43:08,374 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:43:08,375 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:43:08,375 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:43:08,375 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:43:08,377 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:43:08,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:43:08,378 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:43:08,378 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:43:08,378 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:43:08,378 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:43:08,378 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:43:08,379 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:43:08,379 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:43:08,380 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:43:08,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:43:08,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:43:08,380 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:43:08,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:43:08,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:43:08,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:43:08,381 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:43:08,381 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:43:08,381 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:43:08,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:43:08,382 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:43:08,383 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:43:08,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:43:08,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:43:08,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:43:08,480 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:43:08,480 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:43:08,481 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-23 20:43:08,550 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/632526d83/bd34f9342afb4771ade415d8711f1ea8/FLAG143c8464b [2018-10-23 20:43:09,303 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:43:09,304 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-23 20:43:09,341 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/632526d83/bd34f9342afb4771ade415d8711f1ea8/FLAG143c8464b [2018-10-23 20:43:09,363 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/632526d83/bd34f9342afb4771ade415d8711f1ea8 [2018-10-23 20:43:09,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:43:09,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:43:09,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:43:09,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:43:09,387 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:43:09,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:43:09" (1/1) ... [2018-10-23 20:43:09,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42eff4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:09, skipping insertion in model container [2018-10-23 20:43:09,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:43:09" (1/1) ... [2018-10-23 20:43:09,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:43:09,530 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:43:10,587 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:43:10,592 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:43:11,035 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:43:11,060 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:43:11,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11 WrapperNode [2018-10-23 20:43:11,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:43:11,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:43:11,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:43:11,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:43:11,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:43:11,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:43:11,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:43:11,601 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:43:11,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (1/1) ... [2018-10-23 20:43:11,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:43:11,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:43:11,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:43:11,927 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:43:11,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (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 [2018-10-23 20:43:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:43:12,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:43:12,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:43:20,463 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:43:20,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:43:20 BoogieIcfgContainer [2018-10-23 20:43:20,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:43:20,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:43:20,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:43:20,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:43:20,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:43:09" (1/3) ... [2018-10-23 20:43:20,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457761d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:43:20, skipping insertion in model container [2018-10-23 20:43:20,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:43:11" (2/3) ... [2018-10-23 20:43:20,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457761d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:43:20, skipping insertion in model container [2018-10-23 20:43:20,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:43:20" (3/3) ... [2018-10-23 20:43:20,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-10-23 20:43:20,485 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:43:20,494 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:43:20,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:43:20,554 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:43:20,555 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:43:20,555 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:43:20,556 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:43:20,556 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:43:20,556 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:43:20,556 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:43:20,556 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:43:20,556 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:43:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:43:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-23 20:43:20,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:20,607 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:20,610 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:20,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-10-23 20:43:20,617 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:20,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:20,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:20,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:20,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:43:21,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:21,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:43:21,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:43:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:43:21,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:21,103 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:43:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:34,473 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-23 20:43:34,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:43:34,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-23 20:43:34,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:34,510 INFO L225 Difference]: With dead ends: 2093 [2018-10-23 20:43:34,510 INFO L226 Difference]: Without dead ends: 1495 [2018-10-23 20:43:34,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-23 20:43:34,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-23 20:43:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-23 20:43:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-23 20:43:34,647 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 56 [2018-10-23 20:43:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:34,648 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-23 20:43:34,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:43:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-23 20:43:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 20:43:34,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:34,654 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:34,655 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:34,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1891415903, now seen corresponding path program 1 times [2018-10-23 20:43:34,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:34,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:34,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:34,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:34,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:43:35,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:43:35,097 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:43:35,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:35,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:44:40,048 WARN L179 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-23 20:44:40,602 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 20:44:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:44:40,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:44:40,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:44:40,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:44:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:44:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:44:40,837 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 8 states. [2018-10-23 20:45:13,715 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-23 20:45:56,093 WARN L179 SmtUtils]: Spent 32.13 s on a formula simplification that was a NOOP. DAG size: 94 [2018-10-23 20:46:29,092 WARN L179 SmtUtils]: Spent 32.14 s on a formula simplification that was a NOOP. DAG size: 87 Received shutdown request... [2018-10-23 20:47:42,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:47:42,222 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:47:42,229 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:47:42,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:47:42 BoogieIcfgContainer [2018-10-23 20:47:42,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:47:42,230 INFO L168 Benchmark]: Toolchain (without parser) took 272853.11 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:47:42,231 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 20:47:42,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1681.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:47:42,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 537.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:47:42,234 INFO L168 Benchmark]: Boogie Preprocessor took 325.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:47:42,234 INFO L168 Benchmark]: RCFGBuilder took 8538.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:47:42,235 INFO L168 Benchmark]: TraceAbstraction took 261763.83 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 444.6 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -924.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:47:42,241 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1681.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 537.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 325.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8538.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261763.83 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 444.6 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -924.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 173]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 173). Cancelled while BasicCegarLoop was constructing difference of abstraction (1488states) and FLOYD_HOARE automaton (currently 14 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (8008 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 261.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 194.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 878 SDtfs, 6724 SDslu, 693 SDs, 0 SdLazy, 10212 SolverSat, 2936 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 94.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 161.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=1, 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: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 307 ConstructedInterpolants, 35 QuantifiedInterpolants, 1026667 SizeOfPredicates, 5 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 34/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown