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-d380424 [2018-10-24 16:46:45,475 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:46:45,477 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:46:45,489 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:46:45,489 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:46:45,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:46:45,492 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:46:45,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:46:45,496 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:46:45,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:46:45,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:46:45,498 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:46:45,499 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:46:45,500 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:46:45,501 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:46:45,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:46:45,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:46:45,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:46:45,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:46:45,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:46:45,510 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:46:45,511 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:46:45,514 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:46:45,521 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:46:45,521 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:46:45,522 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:46:45,523 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:46:45,523 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 [2018-10-24 16:46:45,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:46:45,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:46:45,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:46:45,539 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:46:45,540 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:46:45,540 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:46:45,541 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:46:45,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:46:45,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:46:45,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:46:45,541 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:46:45,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:46:45,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:46:45,542 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:46:45,542 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:46:45,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:46:45,543 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:46:45,543 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:46:45,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:46:45,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:46:45,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:46:45,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:46:45,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:46:45,544 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:46:45,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:46:45,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:46:45,545 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:46:45,545 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:46:45,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:46:45,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:46:45,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:46:45,639 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:46:45,640 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:46:45,641 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-24 16:46:45,706 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/94689b40b/c7a22c3d66664c4bb30e8be66279a852/FLAG51d223551 [2018-10-24 16:46:46,476 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:46:46,477 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-24 16:46:46,499 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/94689b40b/c7a22c3d66664c4bb30e8be66279a852/FLAG51d223551 [2018-10-24 16:46:46,517 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/94689b40b/c7a22c3d66664c4bb30e8be66279a852 [2018-10-24 16:46:46,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:46:46,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:46:46,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:46:46,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:46:46,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:46:46,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:46:46" (1/1) ... [2018-10-24 16:46:46,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a79e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:46, skipping insertion in model container [2018-10-24 16:46:46,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:46:46" (1/1) ... [2018-10-24 16:46:46,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:46:46,684 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:46:47,637 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:46:47,641 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:46:48,064 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:46:48,088 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:46:48,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48 WrapperNode [2018-10-24 16:46:48,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:46:48,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:46:48,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:46:48,090 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:46:48,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:46:48,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:46:48,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:46:48,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:46:48,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (1/1) ... [2018-10-24 16:46:48,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:46:48,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:46:48,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:46:48,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:46:48,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (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 [2018-10-24 16:46:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:46:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:46:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:46:57,983 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:46:57,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:46:57 BoogieIcfgContainer [2018-10-24 16:46:57,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:46:57,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:46:57,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:46:57,989 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:46:57,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:46:46" (1/3) ... [2018-10-24 16:46:57,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57207d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:46:57, skipping insertion in model container [2018-10-24 16:46:57,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:46:48" (2/3) ... [2018-10-24 16:46:57,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57207d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:46:57, skipping insertion in model container [2018-10-24 16:46:57,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:46:57" (3/3) ... [2018-10-24 16:46:57,995 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-10-24 16:46:58,006 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:46:58,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:46:58,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:46:58,078 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:46:58,078 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:46:58,079 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:46:58,079 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:46:58,079 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:46:58,079 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:46:58,079 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:46:58,079 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:46:58,080 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:46:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:46:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 16:46:58,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:46:58,122 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] [2018-10-24 16:46:58,125 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:46:58,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:46:58,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-10-24 16:46:58,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:46:58,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:46:58,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:58,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:46:58,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:46:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:46:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:46:58,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:46:58,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:46:58,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:46:58,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:46:58,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:46:58,697 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:47:11,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:47:11,786 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-24 16:47:11,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:47:11,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-24 16:47:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:47:11,824 INFO L225 Difference]: With dead ends: 2093 [2018-10-24 16:47:11,825 INFO L226 Difference]: Without dead ends: 1495 [2018-10-24 16:47:11,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:47:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-24 16:47:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-24 16:47:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-24 16:47:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-24 16:47:11,965 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 56 [2018-10-24 16:47:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:47:11,966 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-24 16:47:11,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:47:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-24 16:47:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 16:47:11,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:47:11,973 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] [2018-10-24 16:47:11,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:47:11,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:47:11,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1891415903, now seen corresponding path program 1 times [2018-10-24 16:47:11,974 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:47:11,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:47:11,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:11,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:11,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:47:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:47:12,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:47:12,384 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 [2018-10-24 16:47:12,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:47:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:47:12,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:48:17,246 WARN L179 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-24 16:48:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:18,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:48:18,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-24 16:48:18,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:48:18,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:48:18,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:48:18,299 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 8 states. [2018-10-24 16:48:52,084 WARN L179 SmtUtils]: Spent 32.27 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-24 16:49:35,622 WARN L179 SmtUtils]: Spent 32.18 s on a formula simplification that was a NOOP. DAG size: 94 [2018-10-24 16:50:08,631 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 87 Received shutdown request... [2018-10-24 16:51:15,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:51:15,522 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:51:15,527 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:51:15,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:51:15 BoogieIcfgContainer [2018-10-24 16:51:15,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:51:15,528 INFO L168 Benchmark]: Toolchain (without parser) took 268999.24 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -197.1 MB). Peak memory consumption was 934.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,529 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. [2018-10-24 16:51:15,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1558.17 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 503.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,533 INFO L168 Benchmark]: Boogie Preprocessor took 361.81 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,534 INFO L168 Benchmark]: RCFGBuilder took 9028.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.4 MB). Peak memory consumption was 459.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,535 INFO L168 Benchmark]: TraceAbstraction took 257542.47 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 335.5 MB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 82.9 MB). Peak memory consumption was 418.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:51:15,540 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 1558.17 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 503.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 361.81 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: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9028.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.4 MB). Peak memory consumption was 459.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257542.47 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 335.5 MB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 82.9 MB). Peak memory consumption was 418.4 MB. 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 (7588 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 190.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 864 SDtfs, 6480 SDslu, 676 SDs, 0 SdLazy, 9910 SolverSat, 2832 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 89.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 162.1s 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, 0.1s SatisfiabilityAnalysisTime, 66.4s 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