java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:38:42,460 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:38:42,462 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:38:42,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:38:42,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:38:42,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:38:42,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:38:42,480 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:38:42,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:38:42,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:38:42,484 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:38:42,484 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:38:42,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:38:42,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:38:42,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:38:42,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:38:42,489 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:38:42,491 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:38:42,492 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:38:42,494 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:38:42,495 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:38:42,497 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:38:42,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:38:42,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:38:42,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:38:42,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:38:42,503 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:38:42,504 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:38:42,505 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:38:42,506 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:38:42,506 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:38:42,507 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 18:38:42,507 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 18:38:42,508 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 18:38:42,509 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 18:38:42,509 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 18:38:42,510 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:38:42,524 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:38:42,525 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:38:42,526 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:38:42,526 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:38:42,526 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:38:42,527 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:38:42,527 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:38:42,527 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:38:42,527 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:38:42,527 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:38:42,528 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:38:42,528 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:38:42,528 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:38:42,528 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:38:42,528 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:38:42,529 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:38:42,529 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:38:42,529 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:38:42,529 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:38:42,529 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:42,530 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:38:42,530 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:38:42,530 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:38:42,530 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:38:42,531 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:38:42,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:38:42,531 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:38:42,531 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:38:42,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:38:42,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:38:42,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:38:42,603 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:38:42,603 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:38:42,604 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label18_false-unreach-call.c [2018-10-23 18:38:42,680 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66f052f62/18a715bafb284ec7b86953e830b4ab73/FLAGcbc3a55e2 [2018-10-23 18:38:43,631 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:38:43,632 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label18_false-unreach-call.c [2018-10-23 18:38:43,682 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66f052f62/18a715bafb284ec7b86953e830b4ab73/FLAGcbc3a55e2 [2018-10-23 18:38:43,698 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/66f052f62/18a715bafb284ec7b86953e830b4ab73 [2018-10-23 18:38:43,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:38:43,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:38:43,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:43,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:38:43,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:38:43,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:43" (1/1) ... [2018-10-23 18:38:43,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d47c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:43, skipping insertion in model container [2018-10-23 18:38:43,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:38:43" (1/1) ... [2018-10-23 18:38:43,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:38:43,997 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:38:46,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:46,107 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:38:47,389 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:38:47,451 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:38:47,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47 WrapperNode [2018-10-23 18:38:47,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:38:47,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:47,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:38:47,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:38:47,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:47,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:48,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:38:48,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:38:48,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:38:48,651 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:38:48,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:48,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:48,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:48,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:49,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:49,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:49,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... [2018-10-23 18:38:49,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:38:49,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:38:49,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:38:49,487 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:38:49,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:38:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:38:49,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:38:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:39:06,092 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:39:06,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:39:06 BoogieIcfgContainer [2018-10-23 18:39:06,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:39:06,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:39:06,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:39:06,100 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:39:06,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:38:43" (1/3) ... [2018-10-23 18:39:06,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6878d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:39:06, skipping insertion in model container [2018-10-23 18:39:06,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:38:47" (2/3) ... [2018-10-23 18:39:06,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6878d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:39:06, skipping insertion in model container [2018-10-23 18:39:06,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:39:06" (3/3) ... [2018-10-23 18:39:06,107 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label18_false-unreach-call.c [2018-10-23 18:39:06,118 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:39:06,134 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:39:06,154 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:39:06,207 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:39:06,208 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:39:06,208 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:39:06,208 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:39:06,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:39:06,209 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:39:06,209 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:39:06,209 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:39:06,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:39:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 18:39:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-23 18:39:06,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:06,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:06,555 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:06,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:06,561 INFO L82 PathProgramCache]: Analyzing trace with hash -692138422, now seen corresponding path program 1 times [2018-10-23 18:39:06,563 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:06,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:06,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:06,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:07,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:07,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:39:07,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:39:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:39:07,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:07,035 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 18:39:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:34,113 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-10-23 18:39:34,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:34,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-23 18:39:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:34,178 INFO L225 Difference]: With dead ends: 6409 [2018-10-23 18:39:34,178 INFO L226 Difference]: Without dead ends: 4653 [2018-10-23 18:39:34,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-10-23 18:39:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-10-23 18:39:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-10-23 18:39:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-10-23 18:39:34,414 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 31 [2018-10-23 18:39:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:34,414 INFO L481 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-10-23 18:39:34,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-10-23 18:39:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 18:39:34,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:34,419 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:34,421 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:34,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:34,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1304083131, now seen corresponding path program 1 times [2018-10-23 18:39:34,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:34,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:34,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:34,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:34,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:34,812 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:39:35,478 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 18:39:35,996 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 18:39:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:39:36,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:36,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 18:39:36,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:39:36,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:39:36,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:39:36,140 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-10-23 18:40:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:11,057 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-10-23 18:40:11,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:40:11,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-23 18:40:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:11,139 INFO L225 Difference]: With dead ends: 20192 [2018-10-23 18:40:11,139 INFO L226 Difference]: Without dead ends: 15577 [2018-10-23 18:40:11,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:40:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-10-23 18:40:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-10-23 18:40:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-10-23 18:40:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-10-23 18:40:11,453 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 99 [2018-10-23 18:40:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:11,454 INFO L481 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-10-23 18:40:11,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:40:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-10-23 18:40:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-23 18:40:11,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:11,483 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:40:11,483 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:11,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1015758285, now seen corresponding path program 1 times [2018-10-23 18:40:11,484 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:11,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:11,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:11,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:11,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:12,236 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 18:40:12,768 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 18:40:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-23 18:40:13,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:13,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:40:13,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:40:13,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:40:13,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:40:13,268 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-10-23 18:40:49,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:49,073 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-10-23 18:40:49,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:40:49,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2018-10-23 18:40:49,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:49,152 INFO L225 Difference]: With dead ends: 40712 [2018-10-23 18:40:49,153 INFO L226 Difference]: Without dead ends: 26510 [2018-10-23 18:40:49,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:40:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-10-23 18:40:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-10-23 18:40:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-10-23 18:40:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-10-23 18:40:49,620 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 317 [2018-10-23 18:40:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:49,621 INFO L481 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-10-23 18:40:49,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:40:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-10-23 18:40:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-23 18:40:49,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:49,630 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:49,630 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:49,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:49,632 INFO L82 PathProgramCache]: Analyzing trace with hash 544128243, now seen corresponding path program 1 times [2018-10-23 18:40:49,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:49,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:49,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:49,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:49,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 18:40:50,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:40:50,231 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:40:50,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:50,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:40:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:40:50,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:40:50,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 18:40:50,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:50,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:50,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:50,525 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 4 states. [2018-10-23 18:41:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:18,613 INFO L93 Difference]: Finished difference Result 79222 states and 101661 transitions. [2018-10-23 18:41:18,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:41:18,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 345 [2018-10-23 18:41:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:18,746 INFO L225 Difference]: With dead ends: 79222 [2018-10-23 18:41:18,746 INFO L226 Difference]: Without dead ends: 56816 [2018-10-23 18:41:18,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 345 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 18:41:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56816 states. [2018-10-23 18:41:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56816 to 34695. [2018-10-23 18:41:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34695 states. [2018-10-23 18:41:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34695 states to 34695 states and 44830 transitions. [2018-10-23 18:41:19,499 INFO L78 Accepts]: Start accepts. Automaton has 34695 states and 44830 transitions. Word has length 345 [2018-10-23 18:41:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:19,500 INFO L481 AbstractCegarLoop]: Abstraction has 34695 states and 44830 transitions. [2018-10-23 18:41:19,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:41:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 34695 states and 44830 transitions. [2018-10-23 18:41:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-23 18:41:19,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:19,512 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:41:19,512 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:19,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 22992735, now seen corresponding path program 1 times [2018-10-23 18:41:19,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:19,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:19,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:19,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:19,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:41:20,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:41:20,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:41:20,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:41:20,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:41:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:41:20,247 INFO L87 Difference]: Start difference. First operand 34695 states and 44830 transitions. Second operand 3 states. [2018-10-23 18:41:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:33,100 INFO L93 Difference]: Finished difference Result 87227 states and 116937 transitions. [2018-10-23 18:41:33,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:41:33,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 378 [2018-10-23 18:41:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:33,171 INFO L225 Difference]: With dead ends: 87227 [2018-10-23 18:41:33,172 INFO L226 Difference]: Without dead ends: 48434 [2018-10-23 18:41:33,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:41:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48434 states. [2018-10-23 18:41:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48434 to 48386. [2018-10-23 18:41:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48386 states. [2018-10-23 18:41:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48386 states to 48386 states and 62301 transitions. [2018-10-23 18:41:33,803 INFO L78 Accepts]: Start accepts. Automaton has 48386 states and 62301 transitions. Word has length 378 [2018-10-23 18:41:33,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:41:33,804 INFO L481 AbstractCegarLoop]: Abstraction has 48386 states and 62301 transitions. [2018-10-23 18:41:33,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:41:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 48386 states and 62301 transitions. [2018-10-23 18:41:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-10-23 18:41:33,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:41:33,817 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 18:41:33,817 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:41:33,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:41:33,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1759436107, now seen corresponding path program 1 times [2018-10-23 18:41:33,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:41:33,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:41:33,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:33,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:33,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:41:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 278 proven. 65 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-23 18:41:34,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:41:34,773 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:41:34,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:41:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:41:34,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:41:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-23 18:41:35,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:41:35,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 18:41:35,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:41:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:41:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:35,315 INFO L87 Difference]: Start difference. First operand 48386 states and 62301 transitions. Second operand 5 states. [2018-10-23 18:41:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:41:58,998 INFO L93 Difference]: Finished difference Result 203613 states and 269958 transitions. [2018-10-23 18:41:59,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:41:59,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 501 [2018-10-23 18:41:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:41:59,192 INFO L225 Difference]: With dead ends: 203613 [2018-10-23 18:41:59,192 INFO L226 Difference]: Without dead ends: 156595 [2018-10-23 18:41:59,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:41:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156595 states. [2018-10-23 18:42:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156595 to 111203. [2018-10-23 18:42:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111203 states. [2018-10-23 18:42:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111203 states to 111203 states and 133601 transitions. [2018-10-23 18:42:00,698 INFO L78 Accepts]: Start accepts. Automaton has 111203 states and 133601 transitions. Word has length 501 [2018-10-23 18:42:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:00,699 INFO L481 AbstractCegarLoop]: Abstraction has 111203 states and 133601 transitions. [2018-10-23 18:42:00,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:42:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 111203 states and 133601 transitions. [2018-10-23 18:42:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-10-23 18:42:00,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:00,749 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:42:00,749 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:00,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1446052515, now seen corresponding path program 1 times [2018-10-23 18:42:00,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:00,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:00,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:00,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:00,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 390 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 18:42:02,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:42:02,871 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 18:42:02,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:03,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:42:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-23 18:42:04,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:42:04,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:42:04,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:42:04,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:42:04,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:42:04,271 INFO L87 Difference]: Start difference. First operand 111203 states and 133601 transitions. Second operand 5 states. [2018-10-23 18:42:25,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:42:25,075 INFO L93 Difference]: Finished difference Result 231968 states and 277242 transitions. [2018-10-23 18:42:25,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:42:25,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 960 [2018-10-23 18:42:25,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:42:25,206 INFO L225 Difference]: With dead ends: 231968 [2018-10-23 18:42:25,206 INFO L226 Difference]: Without dead ends: 118032 [2018-10-23 18:42:25,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 960 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:42:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118032 states. [2018-10-23 18:42:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118032 to 109830. [2018-10-23 18:42:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109830 states. [2018-10-23 18:42:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109830 states to 109830 states and 123617 transitions. [2018-10-23 18:42:26,284 INFO L78 Accepts]: Start accepts. Automaton has 109830 states and 123617 transitions. Word has length 960 [2018-10-23 18:42:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:42:26,285 INFO L481 AbstractCegarLoop]: Abstraction has 109830 states and 123617 transitions. [2018-10-23 18:42:26,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:42:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 109830 states and 123617 transitions. [2018-10-23 18:42:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2018-10-23 18:42:26,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:42:26,356 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:42:26,357 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:42:26,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:42:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash -2018077482, now seen corresponding path program 1 times [2018-10-23 18:42:26,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:42:26,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:42:26,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:26,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:42:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:27,318 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:42:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 675 proven. 72 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-10-23 18:42:28,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:42:28,631 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 18:42:28,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:42:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:42:28,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:42:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 675 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-10-23 18:42:29,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:42:29,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 18:42:29,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:42:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:42:29,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:42:29,965 INFO L87 Difference]: Start difference. First operand 109830 states and 123617 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 18:42:36,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:42:36,621 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:42:36,627 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:42:36,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:36 BoogieIcfgContainer [2018-10-23 18:42:36,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:42:36,628 INFO L168 Benchmark]: Toolchain (without parser) took 232917.34 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 442.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:36,629 INFO L168 Benchmark]: CDTParser took 0.23 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 18:42:36,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3739.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 993.0 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:36,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 1194.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 993.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:36,632 INFO L168 Benchmark]: Boogie Preprocessor took 835.70 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 101.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:36,632 INFO L168 Benchmark]: RCFGBuilder took 16606.36 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 513.3 MB). Peak memory consumption was 771.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:42:36,633 INFO L168 Benchmark]: TraceAbstraction took 210533.53 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:42:36,639 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3739.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 993.0 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1194.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 993.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 835.70 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 101.2 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16606.36 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 513.3 MB). Peak memory consumption was 771.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210533.53 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (109830states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (73345 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11491 SDtfs, 43887 SDslu, 3478 SDs, 0 SdLazy, 85260 SolverSat, 17821 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 162.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2989 GetRequests, 2947 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111203occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 79908 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 6713 NumberOfCodeBlocks, 6713 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6701 ConstructedInterpolants, 0 QuantifiedInterpolants, 16056010 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3399 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 4132/4277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown