java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:43:08,539 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:43:08,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:43:08,554 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:43:08,555 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:43:08,559 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:43:08,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:43:08,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:43:08,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:43:08,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:43:08,569 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:43:08,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:43:08,572 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:43:08,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:43:08,578 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:43:08,579 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:43:08,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:43:08,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:43:08,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:43:08,595 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:43:08,596 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:43:08,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:43:08,605 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:43:08,605 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:43:08,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:43:08,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:43:08,607 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:43:08,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:43:08,612 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:43:08,615 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:43:08,615 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:43:08,616 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:43:08,621 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:43:08,645 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:43:08,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:43:08,646 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:43:08,646 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:43:08,647 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:43:08,647 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:43:08,647 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:43:08,648 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:43:08,648 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:43:08,648 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:43:08,648 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:43:08,648 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:43:08,649 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:43:08,650 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:43:08,650 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:43:08,651 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:43:08,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:43:08,651 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:43:08,651 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:43:08,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:43:08,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:43:08,653 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:43:08,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:43:08,654 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:43:08,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:43:08,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:43:08,654 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:43:08,654 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:43:08,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:43:08,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:43:08,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:43:08,716 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:43:08,717 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:43:08,717 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-11-06 21:43:08,774 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c70ca162/5bad10a8dfa2465ab2d5f0e07da8a1f2/FLAG09ee23b56 [2018-11-06 21:43:09,517 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:43:09,519 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-11-06 21:43:09,552 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c70ca162/5bad10a8dfa2465ab2d5f0e07da8a1f2/FLAG09ee23b56 [2018-11-06 21:43:09,573 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c70ca162/5bad10a8dfa2465ab2d5f0e07da8a1f2 [2018-11-06 21:43:09,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:43:09,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:43:09,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:43:09,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:43:09,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:43:09,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:43:09" (1/1) ... [2018-11-06 21:43:09,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1170cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:09, skipping insertion in model container [2018-11-06 21:43:09,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:43:09" (1/1) ... [2018-11-06 21:43:09,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:43:09,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:43:10,708 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:43:10,713 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:43:11,112 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:43:11,133 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:43:11,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11 WrapperNode [2018-11-06 21:43:11,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:43:11,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:43:11,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:43:11,135 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:43:11,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:43:11,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:43:11,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:43:11,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:43:11,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... [2018-11-06 21:43:11,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:43:11,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:43:11,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:43:11,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:43:11,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:43:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:43:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:43:12,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:43:21,739 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:43:21,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:43:21 BoogieIcfgContainer [2018-11-06 21:43:21,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:43:21,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:43:21,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:43:21,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:43:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:43:09" (1/3) ... [2018-11-06 21:43:21,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:43:21, skipping insertion in model container [2018-11-06 21:43:21,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:43:11" (2/3) ... [2018-11-06 21:43:21,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:43:21, skipping insertion in model container [2018-11-06 21:43:21,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:43:21" (3/3) ... [2018-11-06 21:43:21,751 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label19_true-unreach-call.c [2018-11-06 21:43:21,765 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:43:21,778 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:43:21,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:43:21,861 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:43:21,862 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:43:21,862 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:43:21,862 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:43:21,862 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:43:21,863 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:43:21,863 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:43:21,863 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:43:21,863 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:43:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:43:21,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-06 21:43:21,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:21,906 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] [2018-11-06 21:43:21,909 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:21,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-11-06 21:43:21,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:21,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:21,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:21,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:21,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:43:22,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:43:22,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:43:22,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:43:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:43:22,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:43:22,392 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:43:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:43:30,365 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-11-06 21:43:30,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:43:30,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-06 21:43:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:43:30,417 INFO L225 Difference]: With dead ends: 2093 [2018-11-06 21:43:30,417 INFO L226 Difference]: Without dead ends: 1495 [2018-11-06 21:43:30,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:43:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-11-06 21:43:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-11-06 21:43:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-11-06 21:43:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-11-06 21:43:30,553 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 43 [2018-11-06 21:43:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:43:30,553 INFO L480 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-11-06 21:43:30,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:43:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-11-06 21:43:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-06 21:43:30,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:30,559 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, 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] [2018-11-06 21:43:30,560 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:30,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1535990702, now seen corresponding path program 1 times [2018-11-06 21:43:30,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:30,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:30,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:30,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:30,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:43:30,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:43:30,932 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:43:30,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:31,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:43:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:43:31,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:43:31,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 21:43:31,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:43:31,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:43:31,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:43:31,312 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 6 states. [2018-11-06 21:44:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:21,739 INFO L93 Difference]: Finished difference Result 6901 states and 11013 transitions. [2018-11-06 21:44:21,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:44:21,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-06 21:44:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:21,768 INFO L225 Difference]: With dead ends: 6901 [2018-11-06 21:44:21,768 INFO L226 Difference]: Without dead ends: 5415 [2018-11-06 21:44:21,772 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:44:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2018-11-06 21:44:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 4531. [2018-11-06 21:44:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4531 states. [2018-11-06 21:44:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4531 states to 4531 states and 5855 transitions. [2018-11-06 21:44:21,881 INFO L78 Accepts]: Start accepts. Automaton has 4531 states and 5855 transitions. Word has length 114 [2018-11-06 21:44:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:21,882 INFO L480 AbstractCegarLoop]: Abstraction has 4531 states and 5855 transitions. [2018-11-06 21:44:21,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:44:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4531 states and 5855 transitions. [2018-11-06 21:44:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-06 21:44:21,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:21,900 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, 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, 1, 1] [2018-11-06 21:44:21,900 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:21,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash 657229963, now seen corresponding path program 1 times [2018-11-06 21:44:21,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:21,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:21,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:21,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:21,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:22,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:44:22,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:44:22,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:44:22,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:44:22,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:22,251 INFO L87 Difference]: Start difference. First operand 4531 states and 5855 transitions. Second operand 4 states. [2018-11-06 21:44:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:27,804 INFO L93 Difference]: Finished difference Result 12044 states and 16314 transitions. [2018-11-06 21:44:27,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:44:27,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-11-06 21:44:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:27,837 INFO L225 Difference]: With dead ends: 12044 [2018-11-06 21:44:27,837 INFO L226 Difference]: Without dead ends: 7515 [2018-11-06 21:44:27,845 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:44:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2018-11-06 21:44:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7501. [2018-11-06 21:44:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7501 states. [2018-11-06 21:44:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 9379 transitions. [2018-11-06 21:44:28,108 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 9379 transitions. Word has length 136 [2018-11-06 21:44:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:28,109 INFO L480 AbstractCegarLoop]: Abstraction has 7501 states and 9379 transitions. [2018-11-06 21:44:28,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:44:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 9379 transitions. [2018-11-06 21:44:28,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-06 21:44:28,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:28,121 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1] [2018-11-06 21:44:28,121 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:28,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:28,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1681541234, now seen corresponding path program 1 times [2018-11-06 21:44:28,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:28,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:28,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:28,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:28,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-06 21:44:28,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:44:28,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:44:28,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:44:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:44:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:44:28,505 INFO L87 Difference]: Start difference. First operand 7501 states and 9379 transitions. Second operand 3 states. [2018-11-06 21:44:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:31,623 INFO L93 Difference]: Finished difference Result 21392 states and 26924 transitions. [2018-11-06 21:44:31,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:44:31,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-11-06 21:44:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:31,661 INFO L225 Difference]: With dead ends: 21392 [2018-11-06 21:44:31,661 INFO L226 Difference]: Without dead ends: 11299 [2018-11-06 21:44:31,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:44:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2018-11-06 21:44:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 11299. [2018-11-06 21:44:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11299 states. [2018-11-06 21:44:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 12722 transitions. [2018-11-06 21:44:31,884 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 12722 transitions. Word has length 263 [2018-11-06 21:44:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:31,886 INFO L480 AbstractCegarLoop]: Abstraction has 11299 states and 12722 transitions. [2018-11-06 21:44:31,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:44:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 12722 transitions. [2018-11-06 21:44:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-06 21:44:31,893 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:31,893 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-06 21:44:31,893 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:31,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:31,894 INFO L82 PathProgramCache]: Analyzing trace with hash -660376941, now seen corresponding path program 1 times [2018-11-06 21:44:31,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:31,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:31,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:32,433 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-11-06 21:44:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:44:32,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:44:32,600 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:44:32,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:32,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:44:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:44:32,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:44:32,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-11-06 21:44:32,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:44:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:44:32,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:44:32,807 INFO L87 Difference]: Start difference. First operand 11299 states and 12722 transitions. Second operand 8 states. [2018-11-06 21:44:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:39,875 INFO L93 Difference]: Finished difference Result 27776 states and 31758 transitions. [2018-11-06 21:44:39,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 21:44:39,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2018-11-06 21:44:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:39,915 INFO L225 Difference]: With dead ends: 27776 [2018-11-06 21:44:39,915 INFO L226 Difference]: Without dead ends: 16906 [2018-11-06 21:44:39,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:44:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16906 states. [2018-11-06 21:44:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16906 to 16834. [2018-11-06 21:44:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16834 states. [2018-11-06 21:44:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16834 states to 16834 states and 18619 transitions. [2018-11-06 21:44:40,149 INFO L78 Accepts]: Start accepts. Automaton has 16834 states and 18619 transitions. Word has length 276 [2018-11-06 21:44:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:40,150 INFO L480 AbstractCegarLoop]: Abstraction has 16834 states and 18619 transitions. [2018-11-06 21:44:40,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:44:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16834 states and 18619 transitions. [2018-11-06 21:44:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-11-06 21:44:40,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:40,175 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:44:40,175 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:40,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash -283918418, now seen corresponding path program 1 times [2018-11-06 21:44:40,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:40,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:40,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:40,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:40,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:41,037 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-11-06 21:44:41,391 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-11-06 21:44:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 270 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:44:41,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:44:41,925 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:44:41,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:42,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:44:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 270 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:44:42,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:44:42,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-06 21:44:42,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:44:42,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:44:42,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:44:42,469 INFO L87 Difference]: Start difference. First operand 16834 states and 18619 transitions. Second operand 9 states. [2018-11-06 21:44:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:44:51,852 INFO L93 Difference]: Finished difference Result 35373 states and 39022 transitions. [2018-11-06 21:44:51,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:44:51,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 537 [2018-11-06 21:44:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:44:51,887 INFO L225 Difference]: With dead ends: 35373 [2018-11-06 21:44:51,887 INFO L226 Difference]: Without dead ends: 18541 [2018-11-06 21:44:51,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:44:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18541 states. [2018-11-06 21:44:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18541 to 18537. [2018-11-06 21:44:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18537 states. [2018-11-06 21:44:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18537 states to 18537 states and 20378 transitions. [2018-11-06 21:44:52,120 INFO L78 Accepts]: Start accepts. Automaton has 18537 states and 20378 transitions. Word has length 537 [2018-11-06 21:44:52,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:44:52,121 INFO L480 AbstractCegarLoop]: Abstraction has 18537 states and 20378 transitions. [2018-11-06 21:44:52,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:44:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 18537 states and 20378 transitions. [2018-11-06 21:44:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-11-06 21:44:52,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:44:52,146 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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] [2018-11-06 21:44:52,147 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:44:52,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:44:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 665096032, now seen corresponding path program 1 times [2018-11-06 21:44:52,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:44:52,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:44:52,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:52,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:52,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:44:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:52,803 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 21:44:53,255 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-06 21:44:53,700 WARN L179 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-11-06 21:44:54,360 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 17 [2018-11-06 21:44:54,818 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-06 21:44:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 290 proven. 83 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-06 21:44:55,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:44:55,501 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:44:55,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:44:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:44:55,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:44:55,927 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 19 [2018-11-06 21:44:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-11-06 21:44:56,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:44:56,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-11-06 21:44:56,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:44:56,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:44:56,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:44:56,508 INFO L87 Difference]: Start difference. First operand 18537 states and 20378 transitions. Second operand 11 states. [2018-11-06 21:44:58,215 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-06 21:45:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:45:38,974 INFO L93 Difference]: Finished difference Result 55955 states and 61555 transitions. [2018-11-06 21:45:38,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 21:45:38,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 557 [2018-11-06 21:45:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:45:39,041 INFO L225 Difference]: With dead ends: 55955 [2018-11-06 21:45:39,041 INFO L226 Difference]: Without dead ends: 38272 [2018-11-06 21:45:39,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-11-06 21:45:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38272 states. [2018-11-06 21:45:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38272 to 36901. [2018-11-06 21:45:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36901 states. [2018-11-06 21:45:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36901 states to 36901 states and 40228 transitions. [2018-11-06 21:45:39,467 INFO L78 Accepts]: Start accepts. Automaton has 36901 states and 40228 transitions. Word has length 557 [2018-11-06 21:45:39,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:45:39,468 INFO L480 AbstractCegarLoop]: Abstraction has 36901 states and 40228 transitions. [2018-11-06 21:45:39,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 21:45:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36901 states and 40228 transitions. [2018-11-06 21:45:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-11-06 21:45:39,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:45:39,525 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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, 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, 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, 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, 1, 1, 1] [2018-11-06 21:45:39,525 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:45:39,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:45:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1686418898, now seen corresponding path program 1 times [2018-11-06 21:45:39,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:45:39,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:45:39,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:39,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:39,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:45:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 82 proven. 767 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-11-06 21:45:41,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:45:41,005 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:45:41,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:45:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:45:41,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:45:42,679 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 869 DAG size of output: 29 [2018-11-06 21:45:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-11-06 21:45:46,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:45:46,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-11-06 21:45:46,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:45:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:45:46,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:45:46,054 INFO L87 Difference]: Start difference. First operand 36901 states and 40228 transitions. Second operand 9 states. Received shutdown request... [2018-11-06 21:47:21,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 21:47:21,152 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:47:21,158 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:47:21,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:47:21 BoogieIcfgContainer [2018-11-06 21:47:21,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:47:21,159 INFO L168 Benchmark]: Toolchain (without parser) took 251571.12 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,160 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:47:21,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1541.06 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 522.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,163 INFO L168 Benchmark]: Boogie Preprocessor took 331.69 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,163 INFO L168 Benchmark]: RCFGBuilder took 9750.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 471.2 MB). Peak memory consumption was 471.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,164 INFO L168 Benchmark]: TraceAbstraction took 239417.33 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.7 GB in the end (delta: -1.0 GB). Peak memory consumption was 700.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:47:21,170 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1541.06 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 522.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -896.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 331.69 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9750.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 471.2 MB). Peak memory consumption was 471.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239417.33 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 2.7 GB in the end (delta: -1.0 GB). Peak memory consumption was 700.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 134). Cancelled while BasicCegarLoop was constructing difference of abstraction (36901states) and FLOYD_HOARE automaton (currently 16 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (84811 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 239.3s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 221.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3508 SDtfs, 19051 SDslu, 3026 SDs, 0 SdLazy, 46275 SolverSat, 6090 SolverUnsat, 67 SolverUnknown, 0 SolverNotchecked, 207.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2281 GetRequests, 2219 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36901occurred in iteration=7, 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: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 2352 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 4852 NumberOfCodeBlocks, 4852 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4839 ConstructedInterpolants, 464 QuantifiedInterpolants, 30298383 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2767 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 3162/4223 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown