java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:36:45,269 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:36:45,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:36:45,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:36:45,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:36:45,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:36:45,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:36:45,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:36:45,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:36:45,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:36:45,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:36:45,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:36:45,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:36:45,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:36:45,301 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:36:45,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:36:45,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:36:45,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:36:45,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:36:45,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:36:45,310 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:36:45,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:36:45,313 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:36:45,314 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:36:45,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:36:45,315 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:36:45,316 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:36:45,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:36:45,317 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:36:45,318 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:36:45,319 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:36:45,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:36:45,320 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:36:45,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:36:45,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:36:45,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:36:45,322 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:36:45,337 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:36:45,337 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:36:45,338 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:36:45,338 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:36:45,339 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:36:45,339 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:36:45,339 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:36:45,340 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:36:45,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:36:45,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:36:45,340 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:36:45,340 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:36:45,340 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:36:45,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:36:45,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:36:45,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:36:45,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:36:45,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:36:45,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:36:45,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:36:45,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:36:45,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:36:45,346 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:36:45,347 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:36:45,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:36:45,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:36:45,347 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:36:45,347 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:36:45,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:36:45,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:36:45,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:36:45,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:36:45,425 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:36:45,426 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-11-06 19:36:45,495 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe85ae7e/c820f9e75a164096ba783c2b2440a233/FLAG9e12c1014 [2018-11-06 19:36:46,230 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:36:46,231 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-11-06 19:36:46,262 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe85ae7e/c820f9e75a164096ba783c2b2440a233/FLAG9e12c1014 [2018-11-06 19:36:46,282 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbe85ae7e/c820f9e75a164096ba783c2b2440a233 [2018-11-06 19:36:46,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:36:46,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:36:46,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:36:46,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:36:46,307 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:36:46,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:36:46" (1/1) ... [2018-11-06 19:36:46,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:46, skipping insertion in model container [2018-11-06 19:36:46,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:36:46" (1/1) ... [2018-11-06 19:36:46,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:36:46,456 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:36:47,543 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:36:47,548 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:36:47,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:36:48,017 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:36:48,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48 WrapperNode [2018-11-06 19:36:48,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:36:48,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:36:48,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:36:48,023 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:36:48,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:36:48,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:36:48,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:36:48,526 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:36:48,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... [2018-11-06 19:36:48,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:36:48,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:36:48,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:36:48,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:36:48,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:36:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:36:48,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:36:48,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:36:55,279 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:36:55,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:36:55 BoogieIcfgContainer [2018-11-06 19:36:55,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:36:55,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:36:55,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:36:55,285 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:36:55,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:36:46" (1/3) ... [2018-11-06 19:36:55,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a11c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:36:55, skipping insertion in model container [2018-11-06 19:36:55,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:36:48" (2/3) ... [2018-11-06 19:36:55,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a11c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:36:55, skipping insertion in model container [2018-11-06 19:36:55,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:36:55" (3/3) ... [2018-11-06 19:36:55,290 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label19_false-unreach-call.c [2018-11-06 19:36:55,300 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:36:55,311 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:36:55,328 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:36:55,371 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:36:55,372 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:36:55,372 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:36:55,373 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:36:55,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:36:55,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:36:55,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:36:55,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:36:55,374 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:36:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 19:36:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-06 19:36:55,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:36:55,425 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:36:55,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:36:55,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:36:55,432 INFO L82 PathProgramCache]: Analyzing trace with hash -974970054, now seen corresponding path program 1 times [2018-11-06 19:36:55,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:36:55,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:36:55,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:36:55,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:36:55,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:36:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:36:55,746 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-06 19:36:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:36:55,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:36:55,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:36:55,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:36:55,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:36:55,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:36:55,913 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-11-06 19:36:56,098 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 19:37:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:10,769 INFO L93 Difference]: Finished difference Result 3599 states and 7034 transitions. [2018-11-06 19:37:10,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:37:10,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-06 19:37:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:10,810 INFO L225 Difference]: With dead ends: 3599 [2018-11-06 19:37:10,811 INFO L226 Difference]: Without dead ends: 2831 [2018-11-06 19:37:10,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:37:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2018-11-06 19:37:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2018-11-06 19:37:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2018-11-06 19:37:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4101 transitions. [2018-11-06 19:37:10,994 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4101 transitions. Word has length 10 [2018-11-06 19:37:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:10,994 INFO L480 AbstractCegarLoop]: Abstraction has 2831 states and 4101 transitions. [2018-11-06 19:37:10,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:37:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4101 transitions. [2018-11-06 19:37:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-06 19:37:11,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:11,004 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:37:11,005 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:11,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1784029265, now seen corresponding path program 1 times [2018-11-06 19:37:11,005 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:11,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:11,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:11,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:11,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:11,623 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-11-06 19:37:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-06 19:37:11,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:37:11,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:37:11,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:37:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:37:11,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:37:11,759 INFO L87 Difference]: Start difference. First operand 2831 states and 4101 transitions. Second operand 5 states. [2018-11-06 19:37:22,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:22,164 INFO L93 Difference]: Finished difference Result 8424 states and 12649 transitions. [2018-11-06 19:37:22,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:37:22,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-11-06 19:37:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:22,191 INFO L225 Difference]: With dead ends: 8424 [2018-11-06 19:37:22,191 INFO L226 Difference]: Without dead ends: 5595 [2018-11-06 19:37:22,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:37:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-11-06 19:37:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-11-06 19:37:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-11-06 19:37:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 7136 transitions. [2018-11-06 19:37:22,302 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 7136 transitions. Word has length 172 [2018-11-06 19:37:22,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:22,303 INFO L480 AbstractCegarLoop]: Abstraction has 5595 states and 7136 transitions. [2018-11-06 19:37:22,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:37:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 7136 transitions. [2018-11-06 19:37:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-06 19:37:22,309 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:22,309 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:37:22,310 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:22,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1485546131, now seen corresponding path program 1 times [2018-11-06 19:37:22,310 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:22,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:22,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:22,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:22,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-06 19:37:22,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:37:22,761 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:37:22,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:22,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:37:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:37:23,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:37:23,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:37:23,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:37:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:37:23,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:23,041 INFO L87 Difference]: Start difference. First operand 5595 states and 7136 transitions. Second operand 4 states. [2018-11-06 19:37:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:30,303 INFO L93 Difference]: Finished difference Result 16042 states and 21992 transitions. [2018-11-06 19:37:30,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:37:30,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-11-06 19:37:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:30,354 INFO L225 Difference]: With dead ends: 16042 [2018-11-06 19:37:30,354 INFO L226 Difference]: Without dead ends: 11140 [2018-11-06 19:37:30,364 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2018-11-06 19:37:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 7668. [2018-11-06 19:37:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7668 states. [2018-11-06 19:37:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 9572 transitions. [2018-11-06 19:37:30,540 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 9572 transitions. Word has length 261 [2018-11-06 19:37:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:30,541 INFO L480 AbstractCegarLoop]: Abstraction has 7668 states and 9572 transitions. [2018-11-06 19:37:30,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:37:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 9572 transitions. [2018-11-06 19:37:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-06 19:37:30,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:30,549 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:37:30,549 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:30,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash 21793440, now seen corresponding path program 1 times [2018-11-06 19:37:30,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:30,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:30,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:30,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:30,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:37:31,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:37:31,153 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:37:31,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:31,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:37:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-06 19:37:31,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:37:31,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-06 19:37:31,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:37:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:37:31,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:37:31,510 INFO L87 Difference]: Start difference. First operand 7668 states and 9572 transitions. Second operand 6 states. [2018-11-06 19:37:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:41,837 INFO L93 Difference]: Finished difference Result 23637 states and 30091 transitions. [2018-11-06 19:37:41,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:37:41,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2018-11-06 19:37:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:41,890 INFO L225 Difference]: With dead ends: 23637 [2018-11-06 19:37:41,890 INFO L226 Difference]: Without dead ends: 15278 [2018-11-06 19:37:41,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:37:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15278 states. [2018-11-06 19:37:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15278 to 11813. [2018-11-06 19:37:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2018-11-06 19:37:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 13144 transitions. [2018-11-06 19:37:42,087 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 13144 transitions. Word has length 284 [2018-11-06 19:37:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:42,088 INFO L480 AbstractCegarLoop]: Abstraction has 11813 states and 13144 transitions. [2018-11-06 19:37:42,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:37:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 13144 transitions. [2018-11-06 19:37:42,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-11-06 19:37:42,121 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:42,122 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:37:42,123 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:42,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash -843684820, now seen corresponding path program 1 times [2018-11-06 19:37:42,124 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:42,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:42,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:42,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:42,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-11-06 19:37:43,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:37:43,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:37:43,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:37:43,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:37:43,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:43,655 INFO L87 Difference]: Start difference. First operand 11813 states and 13144 transitions. Second operand 4 states. [2018-11-06 19:37:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:50,233 INFO L93 Difference]: Finished difference Result 29858 states and 34514 transitions. [2018-11-06 19:37:50,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:37:50,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 967 [2018-11-06 19:37:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:50,276 INFO L225 Difference]: With dead ends: 29858 [2018-11-06 19:37:50,276 INFO L226 Difference]: Without dead ends: 18738 [2018-11-06 19:37:50,291 INFO L604 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 [2018-11-06 19:37:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-11-06 19:37:50,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-11-06 19:37:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-11-06 19:37:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 21045 transitions. [2018-11-06 19:37:50,503 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 21045 transitions. Word has length 967 [2018-11-06 19:37:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:50,505 INFO L480 AbstractCegarLoop]: Abstraction has 18738 states and 21045 transitions. [2018-11-06 19:37:50,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:37:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 21045 transitions. [2018-11-06 19:37:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-11-06 19:37:50,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:50,550 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:37:50,550 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:50,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:50,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1206651081, now seen corresponding path program 1 times [2018-11-06 19:37:50,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:50,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:50,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:50,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:50,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-11-06 19:37:51,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:37:51,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:37:51,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:37:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:37:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:37:51,954 INFO L87 Difference]: Start difference. First operand 18738 states and 21045 transitions. Second operand 3 states. [2018-11-06 19:37:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:55,466 INFO L93 Difference]: Finished difference Result 36783 states and 41396 transitions. [2018-11-06 19:37:55,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:37:55,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 981 [2018-11-06 19:37:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:55,501 INFO L225 Difference]: With dead ends: 36783 [2018-11-06 19:37:55,501 INFO L226 Difference]: Without dead ends: 18738 [2018-11-06 19:37:55,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:37:55,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2018-11-06 19:37:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 18738. [2018-11-06 19:37:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18738 states. [2018-11-06 19:37:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18738 states to 18738 states and 20560 transitions. [2018-11-06 19:37:55,743 INFO L78 Accepts]: Start accepts. Automaton has 18738 states and 20560 transitions. Word has length 981 [2018-11-06 19:37:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:55,744 INFO L480 AbstractCegarLoop]: Abstraction has 18738 states and 20560 transitions. [2018-11-06 19:37:55,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:37:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 18738 states and 20560 transitions. [2018-11-06 19:37:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2018-11-06 19:37:55,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:55,760 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:37:55,760 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:55,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:55,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2028699065, now seen corresponding path program 1 times [2018-11-06 19:37:55,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:55,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:55,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:56,880 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 19:37:57,136 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-11-06 19:37:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 285 proven. 541 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-11-06 19:37:58,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:37:58,974 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:37:58,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:59,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:37:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-11-06 19:37:59,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:37:59,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-11-06 19:37:59,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:37:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:37:59,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:37:59,976 INFO L87 Difference]: Start difference. First operand 18738 states and 20560 transitions. Second operand 10 states. [2018-11-06 19:38:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:23,749 INFO L93 Difference]: Finished difference Result 90895 states and 101745 transitions. [2018-11-06 19:38:23,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-06 19:38:23,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1072 [2018-11-06 19:38:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:23,825 INFO L225 Difference]: With dead ends: 90895 [2018-11-06 19:38:23,826 INFO L226 Difference]: Without dead ends: 59023 [2018-11-06 19:38:23,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1084 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-11-06 19:38:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59023 states. [2018-11-06 19:38:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59023 to 23533. [2018-11-06 19:38:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23533 states. [2018-11-06 19:38:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23533 states to 23533 states and 24860 transitions. [2018-11-06 19:38:24,302 INFO L78 Accepts]: Start accepts. Automaton has 23533 states and 24860 transitions. Word has length 1072 [2018-11-06 19:38:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:24,304 INFO L480 AbstractCegarLoop]: Abstraction has 23533 states and 24860 transitions. [2018-11-06 19:38:24,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:38:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 23533 states and 24860 transitions. [2018-11-06 19:38:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1240 [2018-11-06 19:38:24,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:24,330 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:24,330 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:24,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash 27924076, now seen corresponding path program 1 times [2018-11-06 19:38:24,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:24,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:24,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:24,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:24,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:25,035 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:38:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 993 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-11-06 19:38:25,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:25,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:25,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:25,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:25,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:25,748 INFO L87 Difference]: Start difference. First operand 23533 states and 24860 transitions. Second operand 4 states. [2018-11-06 19:38:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:30,278 INFO L93 Difference]: Finished difference Result 85756 states and 90889 transitions. [2018-11-06 19:38:30,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:30,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1239 [2018-11-06 19:38:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:30,376 INFO L225 Difference]: With dead ends: 85756 [2018-11-06 19:38:30,376 INFO L226 Difference]: Without dead ends: 61532 [2018-11-06 19:38:30,413 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61532 states. [2018-11-06 19:38:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61532 to 59459. [2018-11-06 19:38:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59459 states. [2018-11-06 19:38:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59459 states to 59459 states and 62175 transitions. [2018-11-06 19:38:31,332 INFO L78 Accepts]: Start accepts. Automaton has 59459 states and 62175 transitions. Word has length 1239 [2018-11-06 19:38:31,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:31,333 INFO L480 AbstractCegarLoop]: Abstraction has 59459 states and 62175 transitions. [2018-11-06 19:38:31,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 59459 states and 62175 transitions. [2018-11-06 19:38:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2018-11-06 19:38:31,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:31,381 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 19:38:31,383 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:31,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash 565562273, now seen corresponding path program 1 times [2018-11-06 19:38:31,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:31,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:31,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:31,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:31,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 1331 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2018-11-06 19:38:33,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:33,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:33,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:33,199 INFO L87 Difference]: Start difference. First operand 59459 states and 62175 transitions. Second operand 4 states. [2018-11-06 19:38:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:38,537 INFO L93 Difference]: Finished difference Result 147245 states and 154445 transitions. [2018-11-06 19:38:38,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:38,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1372 [2018-11-06 19:38:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:38,676 INFO L225 Difference]: With dead ends: 147245 [2018-11-06 19:38:38,677 INFO L226 Difference]: Without dead ends: 87095 [2018-11-06 19:38:38,735 INFO L604 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 [2018-11-06 19:38:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87095 states. [2018-11-06 19:38:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87095 to 85713. [2018-11-06 19:38:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85713 states. [2018-11-06 19:38:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85713 states to 85713 states and 89307 transitions. [2018-11-06 19:38:39,658 INFO L78 Accepts]: Start accepts. Automaton has 85713 states and 89307 transitions. Word has length 1372 [2018-11-06 19:38:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:39,659 INFO L480 AbstractCegarLoop]: Abstraction has 85713 states and 89307 transitions. [2018-11-06 19:38:39,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 85713 states and 89307 transitions. [2018-11-06 19:38:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-11-06 19:38:39,696 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:39,697 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 19:38:39,698 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:39,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1984408622, now seen corresponding path program 1 times [2018-11-06 19:38:39,698 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:39,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:39,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:39,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:39,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2183 backedges. 1485 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-11-06 19:38:41,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:41,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:41,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:41,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:41,610 INFO L87 Difference]: Start difference. First operand 85713 states and 89307 transitions. Second operand 4 states. [2018-11-06 19:38:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:46,564 INFO L93 Difference]: Finished difference Result 174188 states and 181591 transitions. [2018-11-06 19:38:46,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:46,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1445 [2018-11-06 19:38:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:46,673 INFO L225 Difference]: With dead ends: 174188 [2018-11-06 19:38:46,674 INFO L226 Difference]: Without dead ends: 89168 [2018-11-06 19:38:46,724 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89168 states. [2018-11-06 19:38:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89168 to 88477. [2018-11-06 19:38:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88477 states. [2018-11-06 19:38:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88477 states to 88477 states and 91598 transitions. [2018-11-06 19:38:47,511 INFO L78 Accepts]: Start accepts. Automaton has 88477 states and 91598 transitions. Word has length 1445 [2018-11-06 19:38:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:47,512 INFO L480 AbstractCegarLoop]: Abstraction has 88477 states and 91598 transitions. [2018-11-06 19:38:47,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 88477 states and 91598 transitions. [2018-11-06 19:38:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2018-11-06 19:38:47,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:47,544 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:47,544 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:47,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:47,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2175790, now seen corresponding path program 1 times [2018-11-06 19:38:47,545 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:47,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:47,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:47,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:47,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:48,778 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 19:38:49,159 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-06 19:38:49,373 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 19:38:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 770 proven. 1265 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-11-06 19:38:53,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:38:53,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:38:53,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:53,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:38:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 1326 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-11-06 19:38:55,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:38:55,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 19:38:55,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:38:55,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:38:55,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:38:55,495 INFO L87 Difference]: Start difference. First operand 88477 states and 91598 transitions. Second operand 12 states. [2018-11-06 19:39:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:13,749 INFO L93 Difference]: Finished difference Result 240254 states and 249302 transitions. [2018-11-06 19:39:13,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-06 19:39:13,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1455 [2018-11-06 19:39:13,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:13,912 INFO L225 Difference]: With dead ends: 240254 [2018-11-06 19:39:13,913 INFO L226 Difference]: Without dead ends: 152470 [2018-11-06 19:39:13,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1467 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2018-11-06 19:39:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152470 states. [2018-11-06 19:39:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152470 to 110589. [2018-11-06 19:39:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110589 states. [2018-11-06 19:39:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110589 states to 110589 states and 114231 transitions. [2018-11-06 19:39:15,027 INFO L78 Accepts]: Start accepts. Automaton has 110589 states and 114231 transitions. Word has length 1455 [2018-11-06 19:39:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:15,028 INFO L480 AbstractCegarLoop]: Abstraction has 110589 states and 114231 transitions. [2018-11-06 19:39:15,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 19:39:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 110589 states and 114231 transitions. [2018-11-06 19:39:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1475 [2018-11-06 19:39:15,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:15,051 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:39:15,052 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:15,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:15,052 INFO L82 PathProgramCache]: Analyzing trace with hash 638336125, now seen corresponding path program 1 times [2018-11-06 19:39:15,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:15,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:15,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:16,286 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 19:39:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 579 proven. 1551 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-11-06 19:39:19,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:39:19,923 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:39:19,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:20,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:39:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2018-11-06 19:39:21,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:39:21,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 19:39:21,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:39:21,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:39:21,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:39:21,299 INFO L87 Difference]: Start difference. First operand 110589 states and 114231 transitions. Second operand 12 states. [2018-11-06 19:39:37,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:37,948 INFO L93 Difference]: Finished difference Result 258526 states and 266975 transitions. [2018-11-06 19:39:37,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-06 19:39:37,948 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1474 [2018-11-06 19:39:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:38,100 INFO L225 Difference]: With dead ends: 258526 [2018-11-06 19:39:38,100 INFO L226 Difference]: Without dead ends: 148630 [2018-11-06 19:39:38,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1486 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2018-11-06 19:39:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148630 states. [2018-11-06 19:39:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148630 to 105058. [2018-11-06 19:39:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105058 states. [2018-11-06 19:39:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105058 states to 105058 states and 107496 transitions. [2018-11-06 19:39:39,785 INFO L78 Accepts]: Start accepts. Automaton has 105058 states and 107496 transitions. Word has length 1474 [2018-11-06 19:39:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:39,786 INFO L480 AbstractCegarLoop]: Abstraction has 105058 states and 107496 transitions. [2018-11-06 19:39:39,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 19:39:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 105058 states and 107496 transitions. [2018-11-06 19:39:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1588 [2018-11-06 19:39:39,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:39,830 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:39:39,830 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:39,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:39,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1777229237, now seen corresponding path program 1 times [2018-11-06 19:39:39,831 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:39,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:39,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:39,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:39,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 1988 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-06 19:39:42,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:42,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:42,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:42,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:42,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:42,097 INFO L87 Difference]: Start difference. First operand 105058 states and 107496 transitions. Second operand 4 states. [2018-11-06 19:39:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:47,152 INFO L93 Difference]: Finished difference Result 209418 states and 214311 transitions. [2018-11-06 19:39:47,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:47,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1587 [2018-11-06 19:39:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:47,270 INFO L225 Difference]: With dead ends: 209418 [2018-11-06 19:39:47,271 INFO L226 Difference]: Without dead ends: 103669 [2018-11-06 19:39:47,313 INFO L604 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 [2018-11-06 19:39:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103669 states. [2018-11-06 19:39:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103669 to 101596. [2018-11-06 19:39:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101596 states. [2018-11-06 19:39:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101596 states to 101596 states and 103708 transitions. [2018-11-06 19:39:48,339 INFO L78 Accepts]: Start accepts. Automaton has 101596 states and 103708 transitions. Word has length 1587 [2018-11-06 19:39:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:48,340 INFO L480 AbstractCegarLoop]: Abstraction has 101596 states and 103708 transitions. [2018-11-06 19:39:48,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:48,340 INFO L276 IsEmpty]: Start isEmpty. Operand 101596 states and 103708 transitions. [2018-11-06 19:39:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2018-11-06 19:39:48,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:48,394 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:48,395 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:48,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash -115192492, now seen corresponding path program 1 times [2018-11-06 19:39:48,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:48,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:48,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:48,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:48,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 1865 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-11-06 19:39:50,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:50,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:39:50,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:39:50,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:39:50,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:39:50,720 INFO L87 Difference]: Start difference. First operand 101596 states and 103708 transitions. Second operand 3 states. [2018-11-06 19:39:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:53,625 INFO L93 Difference]: Finished difference Result 203190 states and 207417 transitions. [2018-11-06 19:39:53,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:39:53,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1622 [2018-11-06 19:39:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:53,726 INFO L225 Difference]: With dead ends: 203190 [2018-11-06 19:39:53,727 INFO L226 Difference]: Without dead ends: 102287 [2018-11-06 19:39:53,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:39:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102287 states. [2018-11-06 19:39:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102287 to 102287. [2018-11-06 19:39:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102287 states. [2018-11-06 19:39:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102287 states to 102287 states and 104398 transitions. [2018-11-06 19:39:54,753 INFO L78 Accepts]: Start accepts. Automaton has 102287 states and 104398 transitions. Word has length 1622 [2018-11-06 19:39:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:54,754 INFO L480 AbstractCegarLoop]: Abstraction has 102287 states and 104398 transitions. [2018-11-06 19:39:54,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:39:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 102287 states and 104398 transitions. [2018-11-06 19:39:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2018-11-06 19:39:54,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:54,797 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-06 19:39:54,797 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:54,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1382658394, now seen corresponding path program 1 times [2018-11-06 19:39:54,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:54,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:54,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:54,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:54,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 1978 proven. 663 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-11-06 19:39:58,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:39:58,126 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:39:58,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:58,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:39:59,167 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-11-06 19:39:59,924 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-06 19:40:00,879 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 29 [2018-11-06 19:40:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3219 backedges. 982 proven. 1659 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-11-06 19:40:12,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:40:12,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-11-06 19:40:12,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 19:40:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 19:40:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:40:12,250 INFO L87 Difference]: Start difference. First operand 102287 states and 104398 transitions. Second operand 11 states. Received shutdown request... [2018-11-06 19:40:34,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 19:40:34,465 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:40:34,471 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:40:34,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:40:34 BoogieIcfgContainer [2018-11-06 19:40:34,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:40:34,472 INFO L168 Benchmark]: Toolchain (without parser) took 228175.47 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 766.0 MB in the end (delta: 637.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,473 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. [2018-11-06 19:40:34,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1718.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 504.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -972.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,477 INFO L168 Benchmark]: Boogie Preprocessor took 248.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,478 INFO L168 Benchmark]: RCFGBuilder took 6505.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.9 MB). Peak memory consumption was 507.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,478 INFO L168 Benchmark]: TraceAbstraction took 219190.25 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 766.0 MB in the end (delta: 922.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-06 19:40:34,483 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 1718.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 504.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -972.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 248.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6505.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.9 MB). Peak memory consumption was 507.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219190.25 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 766.0 MB in the end (delta: 922.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (102287states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (179995 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 219.1s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 158.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7974 SDtfs, 50766 SDslu, 2868 SDs, 0 SdLazy, 116038 SolverSat, 14585 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6446 GetRequests, 6319 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110589occurred 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: 8.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 134099 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 21927 NumberOfCodeBlocks, 21927 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 21906 ConstructedInterpolants, 754 QuantifiedInterpolants, 131332226 SizeOfPredicates, 4 NumberOfNonLiveVariables, 7284 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 24145/29832 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown