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/Problem19_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:39:49,593 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:39:49,600 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:39:49,623 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:39:49,623 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:39:49,624 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:39:49,626 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:39:49,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:39:49,631 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:39:49,633 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:39:49,634 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:39:49,634 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:39:49,637 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:39:49,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:39:49,641 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:39:49,642 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:39:49,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:39:49,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:39:49,658 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:39:49,660 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:39:49,664 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:39:49,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:39:49,668 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:39:49,668 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:39:49,669 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:39:49,670 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:39:49,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:39:49,672 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:39:49,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:39:49,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:39:49,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:39:49,679 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:39:49,683 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:39:49,711 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:39:49,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:39:49,713 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:39:49,713 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:39:49,714 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:39:49,714 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:39:49,715 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:39:49,716 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:39:49,716 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:39:49,716 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:39:49,717 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:39:49,717 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:39:49,717 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:39:49,717 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:39:49,717 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:39:49,718 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:39:49,718 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:39:49,718 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:39:49,718 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:39:49,718 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:39:49,719 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:39:49,719 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:39:49,719 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:39:49,719 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:39:49,720 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:39:49,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:39:49,721 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:39:49,721 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:39:49,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:39:49,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:39:49,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:39:49,794 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:39:49,795 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:39:49,796 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-10-23 18:39:49,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2d6646fb/174757f73ca64d589782e0e887bd58eb/FLAG55ab0ac04 [2018-10-23 18:39:50,779 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:39:50,780 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-10-23 18:39:50,827 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2d6646fb/174757f73ca64d589782e0e887bd58eb/FLAG55ab0ac04 [2018-10-23 18:39:50,844 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2d6646fb/174757f73ca64d589782e0e887bd58eb [2018-10-23 18:39:50,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:39:50,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:39:50,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:50,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:39:50,864 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:39:50,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:50" (1/1) ... [2018-10-23 18:39:50,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:50, skipping insertion in model container [2018-10-23 18:39:50,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:39:50" (1/1) ... [2018-10-23 18:39:50,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:39:51,151 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:39:53,198 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:53,202 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:39:54,321 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:39:54,386 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:39:54,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54 WrapperNode [2018-10-23 18:39:54,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:39:54,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:54,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:39:54,389 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:39:54,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:54,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:39:55,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:39:55,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:39:55,508 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:39:55,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:55,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:56,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... [2018-10-23 18:39:56,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:39:56,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:39:56,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:39:56,182 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:39:56,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:39:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:39:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:39:56,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:40:13,270 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:40:13,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:13 BoogieIcfgContainer [2018-10-23 18:40:13,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:40:13,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:40:13,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:40:13,276 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:40:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:39:50" (1/3) ... [2018-10-23 18:40:13,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:13, skipping insertion in model container [2018-10-23 18:40:13,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:39:54" (2/3) ... [2018-10-23 18:40:13,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bb302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:40:13, skipping insertion in model container [2018-10-23 18:40:13,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:40:13" (3/3) ... [2018-10-23 18:40:13,280 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label26_false-unreach-call.c [2018-10-23 18:40:13,290 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:40:13,301 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:40:13,319 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:40:13,370 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:40:13,371 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:40:13,371 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:40:13,372 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:40:13,372 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:40:13,372 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:40:13,372 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:40:13,372 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:40:13,372 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:40:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:40:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-23 18:40:13,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:13,433 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] [2018-10-23 18:40:13,436 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:13,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1740446778, now seen corresponding path program 1 times [2018-10-23 18:40:13,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:13,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:13,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:13,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:13,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:13,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:13,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:13,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:13,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:13,840 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:40:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:37,018 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-10-23 18:40:37,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:37,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-23 18:40:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:37,077 INFO L225 Difference]: With dead ends: 6361 [2018-10-23 18:40:37,077 INFO L226 Difference]: Without dead ends: 4605 [2018-10-23 18:40:37,088 INFO L605 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 [2018-10-23 18:40:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-10-23 18:40:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-10-23 18:40:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-10-23 18:40:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-10-23 18:40:37,300 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 27 [2018-10-23 18:40:37,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:37,301 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-10-23 18:40:37,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-10-23 18:40:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 18:40:37,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:37,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:37,306 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:37,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1716891893, now seen corresponding path program 1 times [2018-10-23 18:40:37,306 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:37,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:37,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:37,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:37,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:37,680 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:40:38,055 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 18:40:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:38,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:38,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:40:38,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:40:38,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:40:38,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:40:38,215 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-10-23 18:41:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:14,299 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-10-23 18:41:14,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:41:14,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-23 18:41:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:14,342 INFO L225 Difference]: With dead ends: 13170 [2018-10-23 18:41:14,342 INFO L226 Difference]: Without dead ends: 10024 [2018-10-23 18:41:14,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:41:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-10-23 18:41:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-10-23 18:41:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-10-23 18:41:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-10-23 18:41:14,511 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 95 [2018-10-23 18:41:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:14,512 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-10-23 18:41:14,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:41:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-10-23 18:41:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-23 18:41:14,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:14,533 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, 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] [2018-10-23 18:41:14,533 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:14,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:14,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1390652469, now seen corresponding path program 1 times [2018-10-23 18:41:14,534 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:14,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:14,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:14,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:14,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-10-23 18:41:15,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:15,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:41:15,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:41:15,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:41:15,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:41:15,755 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-10-23 18:41:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:52,489 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-10-23 18:41:52,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:41:52,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2018-10-23 18:41:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:52,552 INFO L225 Difference]: With dead ends: 26878 [2018-10-23 18:41:52,553 INFO L226 Difference]: Without dead ends: 18228 [2018-10-23 18:41:52,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:41:52,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-10-23 18:41:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-10-23 18:41:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-10-23 18:41:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-10-23 18:41:52,813 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 303 [2018-10-23 18:41:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:52,814 INFO L481 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-10-23 18:41:52,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:41:52,814 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-10-23 18:41:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-23 18:41:52,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:52,820 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, 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] [2018-10-23 18:41:52,820 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:52,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1147329061, now seen corresponding path program 1 times [2018-10-23 18:41:52,821 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:52,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:52,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:52,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:52,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:53,335 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:53,335 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:41:53,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:53,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:53,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:53,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:41:53,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:53,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:53,741 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-10-23 18:42:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:32,291 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-10-23 18:42:32,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:42:32,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2018-10-23 18:42:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:32,395 INFO L225 Difference]: With dead ends: 70982 [2018-10-23 18:42:32,395 INFO L226 Difference]: Without dead ends: 51391 [2018-10-23 18:42:32,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:42:32,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-10-23 18:42:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-10-23 18:42:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-10-23 18:42:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60476 transitions. [2018-10-23 18:42:33,288 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60476 transitions. Word has length 331 [2018-10-23 18:42:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:33,290 INFO L481 AbstractCegarLoop]: Abstraction has 51309 states and 60476 transitions. [2018-10-23 18:42:33,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:42:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60476 transitions. [2018-10-23 18:42:33,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-23 18:42:33,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:33,296 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, 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, 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] [2018-10-23 18:42:33,296 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:33,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:33,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2073532387, now seen corresponding path program 1 times [2018-10-23 18:42:33,297 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:33,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:33,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:33,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:33,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:33,776 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 18:42:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 18:42:33,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:42:33,924 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:42:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:34,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:42:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:42:34,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:42:34,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:42:34,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:42:34,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:42:34,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:42:34,201 INFO L87 Difference]: Start difference. First operand 51309 states and 60476 transitions. Second operand 4 states. [2018-10-23 18:43:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:01,144 INFO L93 Difference]: Finished difference Result 184884 states and 220634 transitions. [2018-10-23 18:43:01,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:43:01,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-10-23 18:43:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:01,406 INFO L225 Difference]: With dead ends: 184884 [2018-10-23 18:43:01,406 INFO L226 Difference]: Without dead ends: 134943 [2018-10-23 18:43:01,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:43:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-10-23 18:43:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-10-23 18:43:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-10-23 18:43:03,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101834 transitions. [2018-10-23 18:43:03,178 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101834 transitions. Word has length 341 [2018-10-23 18:43:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:03,179 INFO L481 AbstractCegarLoop]: Abstraction has 86821 states and 101834 transitions. [2018-10-23 18:43:03,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:43:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101834 transitions. [2018-10-23 18:43:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2018-10-23 18:43:03,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:03,196 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:43:03,196 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:03,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:03,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1324914467, now seen corresponding path program 1 times [2018-10-23 18:43:03,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:03,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:03,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:03,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:03,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:04,261 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-23 18:43:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 451 proven. 4 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-10-23 18:43:04,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:43:04,974 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:43:04,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:05,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:43:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-10-23 18:43:05,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:43:05,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:43:05,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:43:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:43:05,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:43:05,468 INFO L87 Difference]: Start difference. First operand 86821 states and 101834 transitions. Second operand 5 states. [2018-10-23 18:43:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:43:28,308 INFO L93 Difference]: Finished difference Result 183205 states and 213703 transitions. [2018-10-23 18:43:28,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:43:28,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 644 [2018-10-23 18:43:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:43:28,464 INFO L225 Difference]: With dead ends: 183205 [2018-10-23 18:43:28,464 INFO L226 Difference]: Without dead ends: 93651 [2018-10-23 18:43:28,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 644 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:43:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-10-23 18:43:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-10-23 18:43:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-10-23 18:43:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100338 transitions. [2018-10-23 18:43:29,315 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100338 transitions. Word has length 644 [2018-10-23 18:43:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:43:29,316 INFO L481 AbstractCegarLoop]: Abstraction has 90917 states and 100338 transitions. [2018-10-23 18:43:29,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:43:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100338 transitions. [2018-10-23 18:43:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-23 18:43:29,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:43:29,322 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:43:29,322 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:43:29,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:43:29,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1057307659, now seen corresponding path program 1 times [2018-10-23 18:43:29,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:43:29,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:43:29,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:29,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:43:29,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:43:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:43:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-23 18:43:30,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:43:30,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:43:30,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:43:30,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:43:30,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:43:30,245 INFO L87 Difference]: Start difference. First operand 90917 states and 100338 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 18:43:48,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:43:48,165 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:43:48,169 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:43:48,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:48 BoogieIcfgContainer [2018-10-23 18:43:48,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:43:48,171 INFO L168 Benchmark]: Toolchain (without parser) took 237313.23 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -64.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,172 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:43:48,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3527.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.7 MB in the end (delta: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 1119.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.8 MB). Free memory was 987.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,174 INFO L168 Benchmark]: Boogie Preprocessor took 673.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 96.8 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,175 INFO L168 Benchmark]: RCFGBuilder took 17089.55 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 297.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 466.6 MB). Peak memory consumption was 763.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,176 INFO L168 Benchmark]: TraceAbstraction took 214897.50 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 62.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 18:43:48,189 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3527.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 987.7 MB in the end (delta: 395.4 MB). Peak memory consumption was 395.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1119.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.8 MB). Free memory was 987.7 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 673.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 96.8 MB). Peak memory consumption was 96.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17089.55 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 297.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 466.6 MB). Peak memory consumption was 763.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214897.50 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 62.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was constructing difference of abstraction (90917states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (186070 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 203.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8830 SDtfs, 46644 SDslu, 3974 SDs, 0 SdLazy, 91580 SolverSat, 18433 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 174.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1358 GetRequests, 1322 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90917occurred in iteration=6, 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: 3.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 56502 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 3785 NumberOfCodeBlocks, 3785 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3775 ConstructedInterpolants, 0 QuantifiedInterpolants, 6620337 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 2032/2105 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown