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/Problem12_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:18:13,435 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:18:13,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:18:13,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:18:13,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:18:13,457 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:18:13,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:18:13,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:18:13,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:18:13,465 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:18:13,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:18:13,469 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:18:13,470 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:18:13,471 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:18:13,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:18:13,481 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:18:13,482 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:18:13,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:18:13,491 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:18:13,493 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:18:13,496 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:18:13,497 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:18:13,499 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:18:13,500 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:18:13,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:18:13,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:18:13,503 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:18:13,504 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:18:13,507 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:18:13,508 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:18:13,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:18:13,509 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:18:13,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:18:13,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:18:13,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:18:13,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:18:13,513 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 [2018-10-26 21:18:13,541 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:18:13,541 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:18:13,542 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:18:13,542 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:18:13,544 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:18:13,544 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:18:13,544 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:18:13,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:18:13,545 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:18:13,546 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:18:13,546 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:18:13,546 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:18:13,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:18:13,547 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:18:13,547 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:18:13,547 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:18:13,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:18:13,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:18:13,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:18:13,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:18:13,548 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:18:13,548 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:18:13,548 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:18:13,549 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:18:13,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:18:13,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:18:13,549 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:18:13,549 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:18:13,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:18:13,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:18:13,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:18:13,628 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:18:13,628 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:18:13,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-26 21:18:13,690 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/45f15b32c/61bf098efe2041ab9ca758ec2acf82df/FLAG3249f12ea [2018-10-26 21:18:14,490 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:18:14,491 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-26 21:18:14,528 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/45f15b32c/61bf098efe2041ab9ca758ec2acf82df/FLAG3249f12ea [2018-10-26 21:18:14,549 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/45f15b32c/61bf098efe2041ab9ca758ec2acf82df [2018-10-26 21:18:14,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:18:14,565 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:18:14,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:18:14,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:18:14,573 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:18:14,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:18:14" (1/1) ... [2018-10-26 21:18:14,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:14, skipping insertion in model container [2018-10-26 21:18:14,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:18:14" (1/1) ... [2018-10-26 21:18:14,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:18:14,762 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:18:16,147 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:18:16,152 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:18:16,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:18:16,793 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:18:16,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16 WrapperNode [2018-10-26 21:18:16,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:18:16,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:18:16,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:18:16,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:18:16,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:16,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:18:17,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:18:17,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:18:17,417 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:18:17,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (1/1) ... [2018-10-26 21:18:17,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:18:17,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:18:17,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:18:17,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:18:17,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (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 [2018-10-26 21:18:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:18:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:18:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:18:26,573 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:18:26,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:18:26 BoogieIcfgContainer [2018-10-26 21:18:26,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:18:26,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:18:26,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:18:26,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:18:26,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:18:14" (1/3) ... [2018-10-26 21:18:26,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:18:26, skipping insertion in model container [2018-10-26 21:18:26,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:18:16" (2/3) ... [2018-10-26 21:18:26,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:18:26, skipping insertion in model container [2018-10-26 21:18:26,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:18:26" (3/3) ... [2018-10-26 21:18:26,583 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label26_true-unreach-call.c [2018-10-26 21:18:26,593 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:18:26,604 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:18:26,622 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:18:26,665 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:18:26,666 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:18:26,666 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:18:26,667 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:18:26,667 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:18:26,667 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:18:26,667 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:18:26,667 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:18:26,667 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:18:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-26 21:18:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 21:18:26,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:18:26,711 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:18:26,714 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:18:26,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:18:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash 279835594, now seen corresponding path program 1 times [2018-10-26 21:18:26,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:18:26,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:18:26,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:18:26,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:18:26,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:18:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:18:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:18:27,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:18:27,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:18:27,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:18:27,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:18:27,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:18:27,214 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-26 21:18:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:18:40,160 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-26 21:18:40,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:18:40,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-26 21:18:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:18:40,201 INFO L225 Difference]: With dead ends: 3146 [2018-10-26 21:18:40,202 INFO L226 Difference]: Without dead ends: 2320 [2018-10-26 21:18:40,210 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 [2018-10-26 21:18:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-26 21:18:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-26 21:18:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-26 21:18:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-26 21:18:40,375 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 46 [2018-10-26 21:18:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:18:40,377 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-26 21:18:40,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:18:40,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-26 21:18:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 21:18:40,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:18:40,383 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:18:40,384 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:18:40,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:18:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 423634440, now seen corresponding path program 1 times [2018-10-26 21:18:40,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:18:40,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:18:40,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:18:40,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:18:40,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:18:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:18:40,933 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-26 21:18:41,104 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-10-26 21:18:41,215 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-26 21:18:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:18:41,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:18:41,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 21:18:41,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:18:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:18:41,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:18:41,311 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-26 21:18:46,236 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-26 21:19:05,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:05,934 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-26 21:19:05,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:19:05,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2018-10-26 21:19:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:05,973 INFO L225 Difference]: With dead ends: 9904 [2018-10-26 21:19:05,973 INFO L226 Difference]: Without dead ends: 7586 [2018-10-26 21:19:05,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:19:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-26 21:19:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-26 21:19:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-26 21:19:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-26 21:19:06,111 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 112 [2018-10-26 21:19:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:06,112 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-26 21:19:06,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:19:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-26 21:19:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-26 21:19:06,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:06,122 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:19:06,125 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:06,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 136296473, now seen corresponding path program 1 times [2018-10-26 21:19:06,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:06,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:06,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:06,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:06,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:06,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:19:06,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:19:06,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:19:06,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:19:06,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:19:06,533 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 4 states. [2018-10-26 21:19:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:15,362 INFO L93 Difference]: Finished difference Result 15918 states and 23927 transitions. [2018-10-26 21:19:15,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:19:15,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-26 21:19:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:15,397 INFO L225 Difference]: With dead ends: 15918 [2018-10-26 21:19:15,397 INFO L226 Difference]: Without dead ends: 7582 [2018-10-26 21:19:15,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:19:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2018-10-26 21:19:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 7582. [2018-10-26 21:19:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7582 states. [2018-10-26 21:19:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 10933 transitions. [2018-10-26 21:19:15,526 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 10933 transitions. Word has length 118 [2018-10-26 21:19:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:15,527 INFO L481 AbstractCegarLoop]: Abstraction has 7582 states and 10933 transitions. [2018-10-26 21:19:15,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:19:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 10933 transitions. [2018-10-26 21:19:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-26 21:19:15,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:15,533 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:19:15,533 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:15,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:15,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1695898688, now seen corresponding path program 1 times [2018-10-26 21:19:15,534 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:15,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:15,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:15,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:15,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:15,925 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 21:19:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:16,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:19:16,175 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 [2018-10-26 21:19:16,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:16,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:19:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 21:19:16,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:19:16,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-26 21:19:16,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:19:16,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:19:16,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:19:16,389 INFO L87 Difference]: Start difference. First operand 7582 states and 10933 transitions. Second operand 7 states. [2018-10-26 21:19:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:30,727 INFO L93 Difference]: Finished difference Result 23434 states and 34553 transitions. [2018-10-26 21:19:30,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:19:30,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2018-10-26 21:19:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:30,789 INFO L225 Difference]: With dead ends: 23434 [2018-10-26 21:19:30,790 INFO L226 Difference]: Without dead ends: 16606 [2018-10-26 21:19:30,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:19:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16606 states. [2018-10-26 21:19:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16606 to 15854. [2018-10-26 21:19:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15854 states. [2018-10-26 21:19:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15854 states to 15854 states and 22312 transitions. [2018-10-26 21:19:31,095 INFO L78 Accepts]: Start accepts. Automaton has 15854 states and 22312 transitions. Word has length 192 [2018-10-26 21:19:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:31,095 INFO L481 AbstractCegarLoop]: Abstraction has 15854 states and 22312 transitions. [2018-10-26 21:19:31,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:19:31,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15854 states and 22312 transitions. [2018-10-26 21:19:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-26 21:19:31,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:31,107 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:19:31,108 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:31,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:31,108 INFO L82 PathProgramCache]: Analyzing trace with hash 605837965, now seen corresponding path program 1 times [2018-10-26 21:19:31,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:31,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:31,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:31,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:31,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 69 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-26 21:19:31,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:19:31,621 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 [2018-10-26 21:19:31,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:31,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:19:32,079 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:19:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:19:32,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:19:32,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-10-26 21:19:32,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:19:32,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:19:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:19:32,695 INFO L87 Difference]: Start difference. First operand 15854 states and 22312 transitions. Second operand 7 states. [2018-10-26 21:19:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:19:55,773 INFO L93 Difference]: Finished difference Result 70810 states and 100870 transitions. [2018-10-26 21:19:55,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:19:55,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2018-10-26 21:19:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:19:55,886 INFO L225 Difference]: With dead ends: 70810 [2018-10-26 21:19:55,886 INFO L226 Difference]: Without dead ends: 55710 [2018-10-26 21:19:55,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:19:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55710 states. [2018-10-26 21:19:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55710 to 54958. [2018-10-26 21:19:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54958 states. [2018-10-26 21:19:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54958 states to 54958 states and 69946 transitions. [2018-10-26 21:19:56,664 INFO L78 Accepts]: Start accepts. Automaton has 54958 states and 69946 transitions. Word has length 297 [2018-10-26 21:19:56,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:19:56,664 INFO L481 AbstractCegarLoop]: Abstraction has 54958 states and 69946 transitions. [2018-10-26 21:19:56,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:19:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 54958 states and 69946 transitions. [2018-10-26 21:19:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-26 21:19:56,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:19:56,720 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, 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, 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] [2018-10-26 21:19:56,720 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:19:56,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:19:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash -552788883, now seen corresponding path program 1 times [2018-10-26 21:19:56,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:19:56,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:19:56,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:56,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:56,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:19:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:57,595 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-26 21:19:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 250 proven. 5 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-26 21:19:57,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:19:57,848 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 [2018-10-26 21:19:57,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:19:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:19:57,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:19:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-26 21:19:58,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:19:58,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:19:58,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:19:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:19:58,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:19:58,142 INFO L87 Difference]: Start difference. First operand 54958 states and 69946 transitions. Second operand 7 states. [2018-10-26 21:19:59,948 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-26 21:20:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:17,703 INFO L93 Difference]: Finished difference Result 182880 states and 233074 transitions. [2018-10-26 21:20:17,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:20:17,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 483 [2018-10-26 21:20:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:17,976 INFO L225 Difference]: With dead ends: 182880 [2018-10-26 21:20:17,976 INFO L226 Difference]: Without dead ends: 121902 [2018-10-26 21:20:18,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 484 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:20:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121902 states. [2018-10-26 21:20:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121902 to 91804. [2018-10-26 21:20:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91804 states. [2018-10-26 21:20:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91804 states to 91804 states and 104677 transitions. [2018-10-26 21:20:19,415 INFO L78 Accepts]: Start accepts. Automaton has 91804 states and 104677 transitions. Word has length 483 [2018-10-26 21:20:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:19,416 INFO L481 AbstractCegarLoop]: Abstraction has 91804 states and 104677 transitions. [2018-10-26 21:20:19,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:20:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 91804 states and 104677 transitions. [2018-10-26 21:20:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-10-26 21:20:19,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:19,469 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:20:19,469 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:19,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:19,470 INFO L82 PathProgramCache]: Analyzing trace with hash 47871245, now seen corresponding path program 1 times [2018-10-26 21:20:19,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:19,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:19,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:19,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:19,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-26 21:20:20,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:20,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:20,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:20:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:20:20,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:20,753 INFO L87 Difference]: Start difference. First operand 91804 states and 104677 transitions. Second operand 4 states. [2018-10-26 21:20:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:29,100 INFO L93 Difference]: Finished difference Result 261078 states and 298039 transitions. [2018-10-26 21:20:29,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:20:29,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 586 [2018-10-26 21:20:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:29,300 INFO L225 Difference]: With dead ends: 261078 [2018-10-26 21:20:29,301 INFO L226 Difference]: Without dead ends: 170028 [2018-10-26 21:20:29,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170028 states. [2018-10-26 21:20:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170028 to 137676. [2018-10-26 21:20:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137676 states. [2018-10-26 21:20:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137676 states to 137676 states and 152759 transitions. [2018-10-26 21:20:31,441 INFO L78 Accepts]: Start accepts. Automaton has 137676 states and 152759 transitions. Word has length 586 [2018-10-26 21:20:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:31,442 INFO L481 AbstractCegarLoop]: Abstraction has 137676 states and 152759 transitions. [2018-10-26 21:20:31,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:20:31,443 INFO L276 IsEmpty]: Start isEmpty. Operand 137676 states and 152759 transitions. [2018-10-26 21:20:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2018-10-26 21:20:31,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:31,516 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:20:31,516 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:31,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1718433234, now seen corresponding path program 1 times [2018-10-26 21:20:31,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:31,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:31,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:31,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:31,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-26 21:20:32,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:32,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:32,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:20:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:20:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:32,182 INFO L87 Difference]: Start difference. First operand 137676 states and 152759 transitions. Second operand 4 states. [2018-10-26 21:20:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:43,568 INFO L93 Difference]: Finished difference Result 291894 states and 323700 transitions. [2018-10-26 21:20:43,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:20:43,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 662 [2018-10-26 21:20:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:43,729 INFO L225 Difference]: With dead ends: 291894 [2018-10-26 21:20:43,730 INFO L226 Difference]: Without dead ends: 132380 [2018-10-26 21:20:43,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:20:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132380 states. [2018-10-26 21:20:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132380 to 129372. [2018-10-26 21:20:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129372 states. [2018-10-26 21:20:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129372 states to 129372 states and 138054 transitions. [2018-10-26 21:20:44,950 INFO L78 Accepts]: Start accepts. Automaton has 129372 states and 138054 transitions. Word has length 662 [2018-10-26 21:20:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:44,951 INFO L481 AbstractCegarLoop]: Abstraction has 129372 states and 138054 transitions. [2018-10-26 21:20:44,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:20:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 129372 states and 138054 transitions. [2018-10-26 21:20:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-26 21:20:44,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:44,978 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:20:44,978 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:44,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1464025548, now seen corresponding path program 1 times [2018-10-26 21:20:44,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:44,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:44,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:44,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-10-26 21:20:45,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:45,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:20:45,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:20:45,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:20:45,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:20:45,562 INFO L87 Difference]: Start difference. First operand 129372 states and 138054 transitions. Second operand 3 states. [2018-10-26 21:20:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:20:52,154 INFO L93 Difference]: Finished difference Result 287317 states and 306668 transitions. [2018-10-26 21:20:52,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:20:52,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 663 [2018-10-26 21:20:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:20:52,326 INFO L225 Difference]: With dead ends: 287317 [2018-10-26 21:20:52,326 INFO L226 Difference]: Without dead ends: 157946 [2018-10-26 21:20:52,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:20:52,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157946 states. [2018-10-26 21:20:53,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157946 to 156442. [2018-10-26 21:20:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156442 states. [2018-10-26 21:20:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156442 states to 156442 states and 165712 transitions. [2018-10-26 21:20:53,827 INFO L78 Accepts]: Start accepts. Automaton has 156442 states and 165712 transitions. Word has length 663 [2018-10-26 21:20:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:20:53,828 INFO L481 AbstractCegarLoop]: Abstraction has 156442 states and 165712 transitions. [2018-10-26 21:20:53,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:20:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 156442 states and 165712 transitions. [2018-10-26 21:20:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-10-26 21:20:53,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:20:53,876 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, 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, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:20:53,877 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:20:53,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:20:53,877 INFO L82 PathProgramCache]: Analyzing trace with hash 410015062, now seen corresponding path program 1 times [2018-10-26 21:20:53,877 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:20:53,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:20:53,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:53,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:20:53,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:20:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:20:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-26 21:20:56,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:20:56,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:20:56,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:20:56,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:20:56,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:20:56,159 INFO L87 Difference]: Start difference. First operand 156442 states and 165712 transitions. Second operand 5 states. [2018-10-26 21:21:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:10,427 INFO L93 Difference]: Finished difference Result 455032 states and 481941 transitions. [2018-10-26 21:21:10,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:21:10,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 810 [2018-10-26 21:21:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:10,776 INFO L225 Difference]: With dead ends: 455032 [2018-10-26 21:21:10,776 INFO L226 Difference]: Without dead ends: 299344 [2018-10-26 21:21:10,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:21:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299344 states. [2018-10-26 21:21:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299344 to 230160. [2018-10-26 21:21:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230160 states. [2018-10-26 21:21:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230160 states to 230160 states and 241277 transitions. [2018-10-26 21:21:16,481 INFO L78 Accepts]: Start accepts. Automaton has 230160 states and 241277 transitions. Word has length 810 [2018-10-26 21:21:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:16,482 INFO L481 AbstractCegarLoop]: Abstraction has 230160 states and 241277 transitions. [2018-10-26 21:21:16,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:21:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 230160 states and 241277 transitions. [2018-10-26 21:21:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2018-10-26 21:21:16,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:16,585 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:16,585 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:16,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:16,586 INFO L82 PathProgramCache]: Analyzing trace with hash 616289201, now seen corresponding path program 1 times [2018-10-26 21:21:16,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:16,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:16,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:16,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:16,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 1182 proven. 14 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-26 21:21:24,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:21:24,864 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 21:21:24,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:21:25,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:21:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 737 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2018-10-26 21:21:26,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:21:26,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2018-10-26 21:21:26,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:21:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:21:26,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:21:26,365 INFO L87 Difference]: Start difference. First operand 230160 states and 241277 transitions. Second operand 7 states. [2018-10-26 21:21:51,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:21:51,017 INFO L93 Difference]: Finished difference Result 481374 states and 504510 transitions. [2018-10-26 21:21:51,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 21:21:51,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1065 [2018-10-26 21:21:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:21:51,294 INFO L225 Difference]: With dead ends: 481374 [2018-10-26 21:21:51,294 INFO L226 Difference]: Without dead ends: 239920 [2018-10-26 21:21:51,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2018-10-26 21:21:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239920 states. [2018-10-26 21:21:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239920 to 231648. [2018-10-26 21:21:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231648 states. [2018-10-26 21:21:54,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231648 states to 231648 states and 240968 transitions. [2018-10-26 21:21:54,464 INFO L78 Accepts]: Start accepts. Automaton has 231648 states and 240968 transitions. Word has length 1065 [2018-10-26 21:21:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:21:54,464 INFO L481 AbstractCegarLoop]: Abstraction has 231648 states and 240968 transitions. [2018-10-26 21:21:54,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:21:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 231648 states and 240968 transitions. [2018-10-26 21:21:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2018-10-26 21:21:54,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:21:54,555 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:21:54,555 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:21:54,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:21:54,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1374495516, now seen corresponding path program 1 times [2018-10-26 21:21:54,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:21:54,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:21:54,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:54,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:21:54,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:21:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-26 21:21:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 1235 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-10-26 21:21:56,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:21:56,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:21:56,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:21:56,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:21:56,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:21:56,414 INFO L87 Difference]: Start difference. First operand 231648 states and 240968 transitions. Second operand 4 states. [2018-10-26 21:21:56,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:21:56,414 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:21:56,419 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:21:56,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:21:56 BoogieIcfgContainer [2018-10-26 21:21:56,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:21:56,421 INFO L168 Benchmark]: Toolchain (without parser) took 221856.64 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,422 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:21:56,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2225.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 622.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,424 INFO L168 Benchmark]: Boogie Preprocessor took 330.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,425 INFO L168 Benchmark]: RCFGBuilder took 8826.91 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -175.1 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,426 INFO L168 Benchmark]: TraceAbstraction took 209844.40 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -658.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 21:21:56,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2225.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 622.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.0 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 330.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8826.91 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 234.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -175.1 MB). Peak memory consumption was 638.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209844.40 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -658.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (231648states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 170.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5129 SDtfs, 41189 SDslu, 1299 SDs, 0 SdLazy, 81580 SolverSat, 18102 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 136.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2128 GetRequests, 2057 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231648occurred in iteration=11, 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: 16.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 147428 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 8162 NumberOfCodeBlocks, 8162 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8146 ConstructedInterpolants, 0 QuantifiedInterpolants, 21451102 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2491 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 8212/8366 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown