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_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 17:57:37,437 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 17:57:37,439 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 17:57:37,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 17:57:37,454 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 17:57:37,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 17:57:37,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 17:57:37,459 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 17:57:37,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 17:57:37,461 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 17:57:37,462 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 17:57:37,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 17:57:37,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 17:57:37,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 17:57:37,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 17:57:37,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 17:57:37,469 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 17:57:37,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 17:57:37,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 17:57:37,484 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 17:57:37,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 17:57:37,489 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 17:57:37,494 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 17:57:37,495 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 17:57:37,495 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 17:57:37,496 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 17:57:37,497 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 17:57:37,497 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 17:57:37,502 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 17:57:37,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 17:57:37,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 17:57:37,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 17:57:37,508 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 17:57:37,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 17:57:37,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 17:57:37,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 17:57:37,535 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 17:57:37,536 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 17:57:37,536 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 17:57:37,536 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 17:57:37,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 17:57:37,537 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 17:57:37,537 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 17:57:37,537 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 17:57:37,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 17:57:37,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 17:57:37,538 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 17:57:37,538 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 17:57:37,538 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 17:57:37,538 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 17:57:37,539 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 17:57:37,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 17:57:37,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 17:57:37,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 17:57:37,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 17:57:37,540 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 17:57:37,540 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 17:57:37,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 17:57:37,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 17:57:37,540 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 17:57:37,541 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 17:57:37,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 17:57:37,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 17:57:37,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 17:57:37,605 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 17:57:37,605 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 17:57:37,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-10-23 17:57:37,679 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6dc149d5f/c2a9dc514e5746a1a1f722aa810740a8/FLAG5eddedaea [2018-10-23 17:57:38,494 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 17:57:38,495 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-10-23 17:57:38,523 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6dc149d5f/c2a9dc514e5746a1a1f722aa810740a8/FLAG5eddedaea [2018-10-23 17:57:38,541 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6dc149d5f/c2a9dc514e5746a1a1f722aa810740a8 [2018-10-23 17:57:38,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 17:57:38,557 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 17:57:38,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 17:57:38,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 17:57:38,563 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 17:57:38,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:38" (1/1) ... [2018-10-23 17:57:38,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd5a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:38, skipping insertion in model container [2018-10-23 17:57:38,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:57:38" (1/1) ... [2018-10-23 17:57:38,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 17:57:38,743 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 17:57:40,000 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:57:40,008 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 17:57:40,622 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:57:40,654 INFO L193 MainTranslator]: Completed translation [2018-10-23 17:57:40,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40 WrapperNode [2018-10-23 17:57:40,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 17:57:40,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 17:57:40,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 17:57:40,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 17:57:40,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:40,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 17:57:41,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 17:57:41,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 17:57:41,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 17:57:41,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (1/1) ... [2018-10-23 17:57:41,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 17:57:41,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 17:57:41,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 17:57:41,746 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 17:57:41,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (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 17:57:41,814 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 17:57:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 17:57:41,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 17:57:51,507 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 17:57:51,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:51 BoogieIcfgContainer [2018-10-23 17:57:51,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 17:57:51,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 17:57:51,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 17:57:51,513 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 17:57:51,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:57:38" (1/3) ... [2018-10-23 17:57:51,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7fd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:51, skipping insertion in model container [2018-10-23 17:57:51,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:57:40" (2/3) ... [2018-10-23 17:57:51,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7fd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:57:51, skipping insertion in model container [2018-10-23 17:57:51,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:57:51" (3/3) ... [2018-10-23 17:57:51,517 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20_false-unreach-call.c [2018-10-23 17:57:51,527 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 17:57:51,537 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 17:57:51,554 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 17:57:51,596 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 17:57:51,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 17:57:51,597 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 17:57:51,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 17:57:51,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 17:57:51,598 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 17:57:51,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 17:57:51,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 17:57:51,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 17:57:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 17:57:51,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 17:57:51,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:51,642 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:57:51,645 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:51,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:51,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-10-23 17:57:51,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:51,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:51,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:51,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:51,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:51,964 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 17:57:51,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:57:51,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:57:51,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:57:51,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:57:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:57:51,991 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 17:58:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:06,998 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 17:58:06,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:07,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-23 17:58:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:07,047 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 17:58:07,048 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 17:58:07,055 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 17:58:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 17:58:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 17:58:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 17:58:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3906 transitions. [2018-10-23 17:58:07,203 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3906 transitions. Word has length 13 [2018-10-23 17:58:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:07,204 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3906 transitions. [2018-10-23 17:58:07,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3906 transitions. [2018-10-23 17:58:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 17:58:07,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:07,208 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 17:58:07,208 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:07,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash -276865537, now seen corresponding path program 1 times [2018-10-23 17:58:07,209 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:07,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:07,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:07,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:07,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:07,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:07,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:58:07,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:07,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:07,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:07,522 INFO L87 Difference]: Start difference. First operand 2320 states and 3906 transitions. Second operand 4 states. [2018-10-23 17:58:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:23,847 INFO L93 Difference]: Finished difference Result 9150 states and 15496 transitions. [2018-10-23 17:58:23,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:23,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-23 17:58:23,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:23,883 INFO L225 Difference]: With dead ends: 9150 [2018-10-23 17:58:23,883 INFO L226 Difference]: Without dead ends: 6832 [2018-10-23 17:58:23,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-23 17:58:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-23 17:58:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-23 17:58:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 9984 transitions. [2018-10-23 17:58:24,017 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 9984 transitions. Word has length 88 [2018-10-23 17:58:24,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:24,018 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 9984 transitions. [2018-10-23 17:58:24,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 9984 transitions. [2018-10-23 17:58:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 17:58:24,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:24,024 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 17:58:24,024 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:24,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1919919928, now seen corresponding path program 1 times [2018-10-23 17:58:24,025 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:24,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:24,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:24,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:24,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:24,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:24,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:58:24,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:24,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:24,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:24,361 INFO L87 Difference]: Start difference. First operand 6832 states and 9984 transitions. Second operand 4 states. [2018-10-23 17:58:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:32,776 INFO L93 Difference]: Finished difference Result 27214 states and 39824 transitions. [2018-10-23 17:58:32,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:32,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-23 17:58:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:32,863 INFO L225 Difference]: With dead ends: 27214 [2018-10-23 17:58:32,863 INFO L226 Difference]: Without dead ends: 20384 [2018-10-23 17:58:32,876 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 17:58:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20384 states. [2018-10-23 17:58:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20384 to 13600. [2018-10-23 17:58:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-10-23 17:58:33,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 17820 transitions. [2018-10-23 17:58:33,147 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 17820 transitions. Word has length 113 [2018-10-23 17:58:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:33,148 INFO L481 AbstractCegarLoop]: Abstraction has 13600 states and 17820 transitions. [2018-10-23 17:58:33,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 17820 transitions. [2018-10-23 17:58:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-23 17:58:33,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:33,152 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:58:33,153 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:33,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:33,153 INFO L82 PathProgramCache]: Analyzing trace with hash 428318262, now seen corresponding path program 1 times [2018-10-23 17:58:33,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:33,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:33,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:33,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:33,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-23 17:58:33,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:33,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:58:33,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:33,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:33,441 INFO L87 Difference]: Start difference. First operand 13600 states and 17820 transitions. Second operand 4 states. [2018-10-23 17:58:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:42,103 INFO L93 Difference]: Finished difference Result 54332 states and 71213 transitions. [2018-10-23 17:58:42,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:42,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-10-23 17:58:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:42,183 INFO L225 Difference]: With dead ends: 54332 [2018-10-23 17:58:42,183 INFO L226 Difference]: Without dead ends: 40734 [2018-10-23 17:58:42,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 17:58:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40734 states. [2018-10-23 17:58:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40734 to 27136. [2018-10-23 17:58:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27136 states. [2018-10-23 17:58:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27136 states to 27136 states and 33681 transitions. [2018-10-23 17:58:42,655 INFO L78 Accepts]: Start accepts. Automaton has 27136 states and 33681 transitions. Word has length 165 [2018-10-23 17:58:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:42,655 INFO L481 AbstractCegarLoop]: Abstraction has 27136 states and 33681 transitions. [2018-10-23 17:58:42,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 27136 states and 33681 transitions. [2018-10-23 17:58:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-23 17:58:42,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:42,663 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:58:42,664 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:42,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:42,664 INFO L82 PathProgramCache]: Analyzing trace with hash -697387655, now seen corresponding path program 1 times [2018-10-23 17:58:42,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:42,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:42,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:42,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:42,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-23 17:58:43,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:43,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:58:43,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:43,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:43,060 INFO L87 Difference]: Start difference. First operand 27136 states and 33681 transitions. Second operand 4 states. [2018-10-23 17:58:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:52,384 INFO L93 Difference]: Finished difference Result 99390 states and 124033 transitions. [2018-10-23 17:58:52,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:52,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 228 [2018-10-23 17:58:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:52,483 INFO L225 Difference]: With dead ends: 99390 [2018-10-23 17:58:52,483 INFO L226 Difference]: Without dead ends: 72256 [2018-10-23 17:58:52,524 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 [2018-10-23 17:58:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72256 states. [2018-10-23 17:58:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72256 to 70752. [2018-10-23 17:58:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70752 states. [2018-10-23 17:58:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70752 states to 70752 states and 85836 transitions. [2018-10-23 17:58:53,499 INFO L78 Accepts]: Start accepts. Automaton has 70752 states and 85836 transitions. Word has length 228 [2018-10-23 17:58:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:53,500 INFO L481 AbstractCegarLoop]: Abstraction has 70752 states and 85836 transitions. [2018-10-23 17:58:53,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 70752 states and 85836 transitions. [2018-10-23 17:58:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-23 17:58:53,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:53,517 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 17:58:53,518 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:53,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1803649041, now seen corresponding path program 1 times [2018-10-23 17:58:53,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:53,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:53,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:53,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:53,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:54,069 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 17:58:54,365 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-23 17:58:54,547 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-23 17:58:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 193 proven. 5 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 17:58:54,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:58:54,661 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 17:58:54,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:54,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:58:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-10-23 17:58:55,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:58:55,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 17:58:55,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 17:58:55,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 17:58:55,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:58:55,324 INFO L87 Difference]: Start difference. First operand 70752 states and 85836 transitions. Second operand 7 states. [2018-10-23 17:58:57,113 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 17:59:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:26,801 INFO L93 Difference]: Finished difference Result 175374 states and 208614 transitions. [2018-10-23 17:59:26,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 17:59:26,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2018-10-23 17:59:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:27,019 INFO L225 Difference]: With dead ends: 175374 [2018-10-23 17:59:27,019 INFO L226 Difference]: Without dead ends: 103117 [2018-10-23 17:59:27,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 17:59:27,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103117 states. [2018-10-23 17:59:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103117 to 73007. [2018-10-23 17:59:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73007 states. [2018-10-23 17:59:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73007 states to 73007 states and 81777 transitions. [2018-10-23 17:59:28,555 INFO L78 Accepts]: Start accepts. Automaton has 73007 states and 81777 transitions. Word has length 281 [2018-10-23 17:59:28,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:28,555 INFO L481 AbstractCegarLoop]: Abstraction has 73007 states and 81777 transitions. [2018-10-23 17:59:28,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 17:59:28,556 INFO L276 IsEmpty]: Start isEmpty. Operand 73007 states and 81777 transitions. [2018-10-23 17:59:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-23 17:59:29,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:29,004 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 17:59:29,005 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:29,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:29,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1787378199, now seen corresponding path program 1 times [2018-10-23 17:59:29,006 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:29,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:29,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:29,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:29,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 394 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-23 17:59:29,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:59:29,601 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 17:59:29,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:29,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:59:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 17:59:29,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:59:29,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 17:59:29,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 17:59:29,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 17:59:29,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 17:59:30,000 INFO L87 Difference]: Start difference. First operand 73007 states and 81777 transitions. Second operand 5 states. [2018-10-23 17:59:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:47,739 INFO L93 Difference]: Finished difference Result 182108 states and 205105 transitions. [2018-10-23 17:59:47,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 17:59:47,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2018-10-23 17:59:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:47,873 INFO L225 Difference]: With dead ends: 182108 [2018-10-23 17:59:47,873 INFO L226 Difference]: Without dead ends: 109855 [2018-10-23 17:59:47,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:59:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109855 states. [2018-10-23 17:59:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109855 to 106847. [2018-10-23 17:59:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106847 states. [2018-10-23 17:59:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106847 states to 106847 states and 116673 transitions. [2018-10-23 17:59:49,049 INFO L78 Accepts]: Start accepts. Automaton has 106847 states and 116673 transitions. Word has length 388 [2018-10-23 17:59:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:49,050 INFO L481 AbstractCegarLoop]: Abstraction has 106847 states and 116673 transitions. [2018-10-23 17:59:49,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 17:59:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 106847 states and 116673 transitions. [2018-10-23 17:59:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-23 17:59:49,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:49,081 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:59:49,081 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:49,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash -206971030, now seen corresponding path program 1 times [2018-10-23 17:59:49,082 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:49,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:49,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:49,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:49,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-23 17:59:49,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:49,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:59:49,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:59:49,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:59:49,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:59:49,415 INFO L87 Difference]: Start difference. First operand 106847 states and 116673 transitions. Second operand 4 states. [2018-10-23 17:59:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:57,236 INFO L93 Difference]: Finished difference Result 213692 states and 233368 transitions. [2018-10-23 17:59:57,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:59:57,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 403 [2018-10-23 17:59:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:57,356 INFO L225 Difference]: With dead ends: 213692 [2018-10-23 17:59:57,357 INFO L226 Difference]: Without dead ends: 107599 [2018-10-23 17:59:57,408 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 17:59:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107599 states. [2018-10-23 17:59:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107599 to 105343. [2018-10-23 17:59:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105343 states. [2018-10-23 17:59:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105343 states to 105343 states and 112233 transitions. [2018-10-23 17:59:58,353 INFO L78 Accepts]: Start accepts. Automaton has 105343 states and 112233 transitions. Word has length 403 [2018-10-23 17:59:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 105343 states and 112233 transitions. [2018-10-23 17:59:58,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:59:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 105343 states and 112233 transitions. [2018-10-23 17:59:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-23 17:59:58,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:58,375 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:59:58,376 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:58,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:58,376 INFO L82 PathProgramCache]: Analyzing trace with hash -406796445, now seen corresponding path program 1 times [2018-10-23 17:59:58,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:58,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:58,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:58,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:58,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-23 17:59:58,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:58,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:59:58,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:59:58,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:59:58,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:59:58,791 INFO L87 Difference]: Start difference. First operand 105343 states and 112233 transitions. Second operand 4 states. [2018-10-23 18:00:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:00:06,874 INFO L93 Difference]: Finished difference Result 243016 states and 259542 transitions. [2018-10-23 18:00:06,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:00:06,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 416 [2018-10-23 18:00:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:00:07,013 INFO L225 Difference]: With dead ends: 243016 [2018-10-23 18:00:07,013 INFO L226 Difference]: Without dead ends: 138427 [2018-10-23 18:00:07,058 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 [2018-10-23 18:00:07,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138427 states. [2018-10-23 18:00:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138427 to 134667. [2018-10-23 18:00:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134667 states. [2018-10-23 18:00:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134667 states to 134667 states and 142683 transitions. [2018-10-23 18:00:08,115 INFO L78 Accepts]: Start accepts. Automaton has 134667 states and 142683 transitions. Word has length 416 [2018-10-23 18:00:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:00:08,116 INFO L481 AbstractCegarLoop]: Abstraction has 134667 states and 142683 transitions. [2018-10-23 18:00:08,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:00:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 134667 states and 142683 transitions. [2018-10-23 18:00:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2018-10-23 18:00:08,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:08,238 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:08,238 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:08,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:08,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1613835290, now seen corresponding path program 1 times [2018-10-23 18:00:08,239 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:08,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:08,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:08,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:08,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 118 proven. 343 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-23 18:00:10,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:00:10,866 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 18:00:10,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:11,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:00:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 85 proven. 376 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-23 18:00:13,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:00:13,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-23 18:00:13,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:00:13,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:00:13,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:00:13,294 INFO L87 Difference]: Start difference. First operand 134667 states and 142683 transitions. Second operand 8 states. [2018-10-23 18:00:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:00:27,683 INFO L93 Difference]: Finished difference Result 291892 states and 309383 transitions. [2018-10-23 18:00:27,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:00:27,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1028 [2018-10-23 18:00:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:00:27,853 INFO L225 Difference]: With dead ends: 291892 [2018-10-23 18:00:27,854 INFO L226 Difference]: Without dead ends: 156474 [2018-10-23 18:00:27,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1027 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:00:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156474 states. [2018-10-23 18:00:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156474 to 148954. [2018-10-23 18:00:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148954 states. [2018-10-23 18:00:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148954 states to 148954 states and 157289 transitions. [2018-10-23 18:00:29,885 INFO L78 Accepts]: Start accepts. Automaton has 148954 states and 157289 transitions. Word has length 1028 [2018-10-23 18:00:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:00:29,886 INFO L481 AbstractCegarLoop]: Abstraction has 148954 states and 157289 transitions. [2018-10-23 18:00:29,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:00:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 148954 states and 157289 transitions. [2018-10-23 18:00:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2018-10-23 18:00:30,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:30,001 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:30,001 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:30,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1529781787, now seen corresponding path program 1 times [2018-10-23 18:00:30,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:30,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:30,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:30,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:30,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:30,436 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:00:30,804 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-10-23 18:00:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-10-23 18:00:32,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:00:32,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:00:32,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:00:32,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:00:32,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:00:32,100 INFO L87 Difference]: Start difference. First operand 148954 states and 157289 transitions. Second operand 6 states. [2018-10-23 18:00:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:00:42,230 INFO L93 Difference]: Finished difference Result 320466 states and 338887 transitions. [2018-10-23 18:00:42,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:00:42,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1043 [2018-10-23 18:00:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:00:42,420 INFO L225 Difference]: With dead ends: 320466 [2018-10-23 18:00:42,420 INFO L226 Difference]: Without dead ends: 163231 [2018-10-23 18:00:42,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:00:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163231 states. [2018-10-23 18:00:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163231 to 160975. [2018-10-23 18:00:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160975 states. [2018-10-23 18:00:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160975 states to 160975 states and 168623 transitions. [2018-10-23 18:00:44,114 INFO L78 Accepts]: Start accepts. Automaton has 160975 states and 168623 transitions. Word has length 1043 [2018-10-23 18:00:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:00:44,114 INFO L481 AbstractCegarLoop]: Abstraction has 160975 states and 168623 transitions. [2018-10-23 18:00:44,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:00:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 160975 states and 168623 transitions. [2018-10-23 18:00:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2018-10-23 18:00:44,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:44,210 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:44,210 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:44,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:44,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2085881893, now seen corresponding path program 1 times [2018-10-23 18:00:44,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:44,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:44,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:44,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:44,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 833 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-10-23 18:00:45,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:00:45,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:00:45,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:00:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:00:45,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:00:45,878 INFO L87 Difference]: Start difference. First operand 160975 states and 168623 transitions. Second operand 4 states. [2018-10-23 18:00:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:00:54,942 INFO L93 Difference]: Finished difference Result 321948 states and 337277 transitions. [2018-10-23 18:00:54,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:00:54,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1162 [2018-10-23 18:00:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:00:55,125 INFO L225 Difference]: With dead ends: 321948 [2018-10-23 18:00:55,125 INFO L226 Difference]: Without dead ends: 159468 [2018-10-23 18:00:55,205 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 [2018-10-23 18:00:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159468 states. [2018-10-23 18:00:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159468 to 158716. [2018-10-23 18:00:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158716 states. [2018-10-23 18:00:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158716 states to 158716 states and 165214 transitions. [2018-10-23 18:00:57,538 INFO L78 Accepts]: Start accepts. Automaton has 158716 states and 165214 transitions. Word has length 1162 [2018-10-23 18:00:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:00:57,539 INFO L481 AbstractCegarLoop]: Abstraction has 158716 states and 165214 transitions. [2018-10-23 18:00:57,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:00:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 158716 states and 165214 transitions. [2018-10-23 18:00:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2018-10-23 18:00:57,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:57,646 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:57,646 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:57,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -820875038, now seen corresponding path program 1 times [2018-10-23 18:00:57,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:57,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:57,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:57,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:57,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-10-23 18:01:00,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:00,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:01:00,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:00,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:00,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:00,209 INFO L87 Difference]: Start difference. First operand 158716 states and 165214 transitions. Second operand 4 states. [2018-10-23 18:01:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:08,088 INFO L93 Difference]: Finished difference Result 315926 states and 328869 transitions. [2018-10-23 18:01:08,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:01:08,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1241 [2018-10-23 18:01:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:08,267 INFO L225 Difference]: With dead ends: 315926 [2018-10-23 18:01:08,267 INFO L226 Difference]: Without dead ends: 157964 [2018-10-23 18:01:08,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 18:01:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157964 states. [2018-10-23 18:01:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157964 to 151948. [2018-10-23 18:01:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151948 states. [2018-10-23 18:01:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151948 states to 151948 states and 156453 transitions. [2018-10-23 18:01:09,674 INFO L78 Accepts]: Start accepts. Automaton has 151948 states and 156453 transitions. Word has length 1241 [2018-10-23 18:01:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:09,674 INFO L481 AbstractCegarLoop]: Abstraction has 151948 states and 156453 transitions. [2018-10-23 18:01:09,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 151948 states and 156453 transitions. [2018-10-23 18:01:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2018-10-23 18:01:09,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:09,772 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:09,772 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:09,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1266352360, now seen corresponding path program 1 times [2018-10-23 18:01:09,773 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:09,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:09,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:09,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:09,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:11,118 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:01:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1399 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 18:01:12,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:01:12,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:01:12,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:01:12,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:01:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:12,628 INFO L87 Difference]: Start difference. First operand 151948 states and 156453 transitions. Second operand 4 states. [2018-10-23 18:01:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:01:20,689 INFO L93 Difference]: Finished difference Result 312915 states and 322051 transitions. [2018-10-23 18:01:20,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:01:20,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1272 [2018-10-23 18:01:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:01:21,176 INFO L225 Difference]: With dead ends: 312915 [2018-10-23 18:01:21,176 INFO L226 Difference]: Without dead ends: 161721 [2018-10-23 18:01:21,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:01:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161721 states. [2018-10-23 18:01:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161721 to 151193. [2018-10-23 18:01:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151193 states. [2018-10-23 18:01:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151193 states to 151193 states and 155310 transitions. [2018-10-23 18:01:22,550 INFO L78 Accepts]: Start accepts. Automaton has 151193 states and 155310 transitions. Word has length 1272 [2018-10-23 18:01:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:01:22,551 INFO L481 AbstractCegarLoop]: Abstraction has 151193 states and 155310 transitions. [2018-10-23 18:01:22,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:01:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 151193 states and 155310 transitions. [2018-10-23 18:01:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1438 [2018-10-23 18:01:22,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:01:22,662 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 18:01:22,662 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:01:22,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:01:22,663 INFO L82 PathProgramCache]: Analyzing trace with hash 225062050, now seen corresponding path program 1 times [2018-10-23 18:01:22,663 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:01:22,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:01:22,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:22,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:22,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:01:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 1311 proven. 180 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-23 18:01:25,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:01:25,288 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 [2018-10-23 18:01:25,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:01:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:01:25,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-23 18:01:25,809 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:01:26,010 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:01:26,011 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:01:26,016 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:01:26,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:01:26 BoogieIcfgContainer [2018-10-23 18:01:26,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:01:26,018 INFO L168 Benchmark]: Toolchain (without parser) took 227461.36 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -200.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:01:26,019 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:01:26,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2096.60 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. [2018-10-23 18:01:26,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 650.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:26,021 INFO L168 Benchmark]: Boogie Preprocessor took 438.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:26,022 INFO L168 Benchmark]: RCFGBuilder took 9763.03 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 216.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -177.9 MB). Peak memory consumption was 618.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:01:26,023 INFO L168 Benchmark]: TraceAbstraction took 214507.58 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 727.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 18:01:26,029 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2096.60 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 650.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 811.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 438.83 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9763.03 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 216.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -177.9 MB). Peak memory consumption was 618.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214507.58 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 727.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was analyzing trace of length 1438 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 214.4s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 175.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6673 SDtfs, 37886 SDslu, 1493 SDs, 0 SdLazy, 79750 SolverSat, 15420 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 139.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1775 GetRequests, 1716 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160975occurred 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: 15.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 88092 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 9538 NumberOfCodeBlocks, 9538 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9521 ConstructedInterpolants, 0 QuantifiedInterpolants, 24425383 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2113 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 7549/8278 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown