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_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:37:31,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:37:31,277 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:37:31,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:37:31,289 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:37:31,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:37:31,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:37:31,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:37:31,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:37:31,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:37:31,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:37:31,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:37:31,301 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:37:31,302 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:37:31,304 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:37:31,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:37:31,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:37:31,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:37:31,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:37:31,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:37:31,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:37:31,313 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:37:31,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:37:31,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:37:31,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:37:31,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:37:31,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:37:31,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:37:31,320 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:37:31,321 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:37:31,321 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:37:31,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:37:31,325 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 19:37:31,340 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:37:31,340 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:37:31,341 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:37:31,341 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:37:31,342 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:37:31,342 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:37:31,342 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:37:31,342 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:37:31,343 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:37:31,344 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:37:31,344 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:37:31,344 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:37:31,344 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:37:31,345 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:37:31,345 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:37:31,345 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:37:31,345 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:37:31,345 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:37:31,345 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:37:31,346 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:37:31,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:37:31,346 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:37:31,346 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:37:31,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:37:31,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:37:31,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:37:31,416 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:37:31,417 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:37:31,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-06 19:37:31,491 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ad2335e/467bf40dd2e74e56a21fff97f4780f09/FLAGf889cd5ad [2018-11-06 19:37:32,194 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:37:32,194 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-06 19:37:32,221 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ad2335e/467bf40dd2e74e56a21fff97f4780f09/FLAGf889cd5ad [2018-11-06 19:37:32,243 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7ad2335e/467bf40dd2e74e56a21fff97f4780f09 [2018-11-06 19:37:32,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:37:32,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:37:32,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:37:32,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:37:32,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:37:32,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:37:32" (1/1) ... [2018-11-06 19:37:32,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a14655d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:32, skipping insertion in model container [2018-11-06 19:37:32,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:37:32" (1/1) ... [2018-11-06 19:37:32,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:37:32,433 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:37:33,621 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:37:33,626 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:37:34,189 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:37:34,218 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:37:34,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34 WrapperNode [2018-11-06 19:37:34,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:37:34,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:37:34,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:37:34,221 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:37:34,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:37:34,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:37:34,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:37:34,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:37:34,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (1/1) ... [2018-11-06 19:37:34,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:37:34,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:37:34,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:37:34,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:37:34,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (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 19:37:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:37:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:37:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:37:41,617 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:37:41,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:37:41 BoogieIcfgContainer [2018-11-06 19:37:41,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:37:41,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:37:41,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:37:41,622 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:37:41,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:37:32" (1/3) ... [2018-11-06 19:37:41,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8cf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:37:41, skipping insertion in model container [2018-11-06 19:37:41,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:37:34" (2/3) ... [2018-11-06 19:37:41,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8cf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:37:41, skipping insertion in model container [2018-11-06 19:37:41,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:37:41" (3/3) ... [2018-11-06 19:37:41,627 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label31_false-unreach-call.c [2018-11-06 19:37:41,637 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:37:41,647 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:37:41,665 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:37:41,709 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:37:41,710 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:37:41,710 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:37:41,710 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:37:41,710 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:37:41,711 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:37:41,711 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:37:41,711 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:37:41,711 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:37:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 19:37:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-06 19:37:41,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:41,755 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:37:41,758 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:41,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-11-06 19:37:41,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:41,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:41,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:41,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:41,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:42,109 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 19:37:42,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:37:42,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:37:42,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:37:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:37:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:42,142 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-11-06 19:37:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:52,377 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-11-06 19:37:52,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:37:52,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-06 19:37:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:52,416 INFO L225 Difference]: With dead ends: 2918 [2018-11-06 19:37:52,417 INFO L226 Difference]: Without dead ends: 2153 [2018-11-06 19:37:52,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-11-06 19:37:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-11-06 19:37:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-11-06 19:37:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3448 transitions. [2018-11-06 19:37:52,578 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3448 transitions. Word has length 16 [2018-11-06 19:37:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:52,579 INFO L480 AbstractCegarLoop]: Abstraction has 2153 states and 3448 transitions. [2018-11-06 19:37:52,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:37:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3448 transitions. [2018-11-06 19:37:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-06 19:37:52,584 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:52,584 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:37:52,584 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:52,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash 880957250, now seen corresponding path program 1 times [2018-11-06 19:37:52,586 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:52,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:52,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:52,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:52,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:37:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:37:52,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:37:52,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:37:52,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:37:52,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:37:52,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:52,941 INFO L87 Difference]: Start difference. First operand 2153 states and 3448 transitions. Second operand 4 states. [2018-11-06 19:37:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:37:59,263 INFO L93 Difference]: Finished difference Result 6377 states and 10263 transitions. [2018-11-06 19:37:59,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:37:59,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2018-11-06 19:37:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:37:59,287 INFO L225 Difference]: With dead ends: 6377 [2018-11-06 19:37:59,287 INFO L226 Difference]: Without dead ends: 4226 [2018-11-06 19:37:59,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:37:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-11-06 19:37:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-11-06 19:37:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-11-06 19:37:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5833 transitions. [2018-11-06 19:37:59,368 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5833 transitions. Word has length 82 [2018-11-06 19:37:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:37:59,369 INFO L480 AbstractCegarLoop]: Abstraction has 4226 states and 5833 transitions. [2018-11-06 19:37:59,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:37:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5833 transitions. [2018-11-06 19:37:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-06 19:37:59,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:37:59,387 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:59,387 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:37:59,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:37:59,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1144334006, now seen corresponding path program 1 times [2018-11-06 19:37:59,387 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:37:59,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:37:59,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:59,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:37:59,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:37:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 19:38:00,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:00,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:00,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:38:00,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:38:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:38:00,100 INFO L87 Difference]: Start difference. First operand 4226 states and 5833 transitions. Second operand 5 states. [2018-11-06 19:38:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:08,480 INFO L93 Difference]: Finished difference Result 15360 states and 20468 transitions. [2018-11-06 19:38:08,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:38:08,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2018-11-06 19:38:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:08,530 INFO L225 Difference]: With dead ends: 15360 [2018-11-06 19:38:08,530 INFO L226 Difference]: Without dead ends: 11136 [2018-11-06 19:38:08,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:38:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-11-06 19:38:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10445. [2018-11-06 19:38:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10445 states. [2018-11-06 19:38:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10445 states to 10445 states and 12444 transitions. [2018-11-06 19:38:08,709 INFO L78 Accepts]: Start accepts. Automaton has 10445 states and 12444 transitions. Word has length 201 [2018-11-06 19:38:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:08,709 INFO L480 AbstractCegarLoop]: Abstraction has 10445 states and 12444 transitions. [2018-11-06 19:38:08,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:38:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 10445 states and 12444 transitions. [2018-11-06 19:38:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-11-06 19:38:08,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:08,719 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:08,719 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:08,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash 52890338, now seen corresponding path program 1 times [2018-11-06 19:38:08,720 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:08,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:08,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:08,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:08,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:09,298 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:38:09,543 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-11-06 19:38:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 258 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-06 19:38:09,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:38:09,729 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 19:38:09,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:09,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:38:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-06 19:38:10,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:38:10,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:38:10,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:38:10,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:38:10,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:38:10,041 INFO L87 Difference]: Start difference. First operand 10445 states and 12444 transitions. Second operand 6 states. [2018-11-06 19:38:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:21,488 INFO L93 Difference]: Finished difference Result 31269 states and 37248 transitions. [2018-11-06 19:38:21,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:38:21,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 384 [2018-11-06 19:38:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:21,564 INFO L225 Difference]: With dead ends: 31269 [2018-11-06 19:38:21,564 INFO L226 Difference]: Without dead ends: 18750 [2018-11-06 19:38:21,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 384 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:38:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18750 states. [2018-11-06 19:38:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18750 to 13883. [2018-11-06 19:38:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2018-11-06 19:38:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 15539 transitions. [2018-11-06 19:38:21,849 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 15539 transitions. Word has length 384 [2018-11-06 19:38:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:21,850 INFO L480 AbstractCegarLoop]: Abstraction has 13883 states and 15539 transitions. [2018-11-06 19:38:21,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:38:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 15539 transitions. [2018-11-06 19:38:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-11-06 19:38:21,858 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:21,859 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:21,859 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:21,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash -396150073, now seen corresponding path program 1 times [2018-11-06 19:38:21,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:21,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:21,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:21,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:21,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-06 19:38:22,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:22,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:22,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:22,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:22,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:22,402 INFO L87 Difference]: Start difference. First operand 13883 states and 15539 transitions. Second operand 4 states. [2018-11-06 19:38:28,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:28,063 INFO L93 Difference]: Finished difference Result 31925 states and 36879 transitions. [2018-11-06 19:38:28,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:28,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 389 [2018-11-06 19:38:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:28,088 INFO L225 Difference]: With dead ends: 31925 [2018-11-06 19:38:28,089 INFO L226 Difference]: Without dead ends: 18044 [2018-11-06 19:38:28,107 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 19:38:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18044 states. [2018-11-06 19:38:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18044 to 15956. [2018-11-06 19:38:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15956 states. [2018-11-06 19:38:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15956 states to 15956 states and 17936 transitions. [2018-11-06 19:38:28,313 INFO L78 Accepts]: Start accepts. Automaton has 15956 states and 17936 transitions. Word has length 389 [2018-11-06 19:38:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:28,314 INFO L480 AbstractCegarLoop]: Abstraction has 15956 states and 17936 transitions. [2018-11-06 19:38:28,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 15956 states and 17936 transitions. [2018-11-06 19:38:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-11-06 19:38:28,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:28,331 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-06 19:38:28,332 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:28,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:28,332 INFO L82 PathProgramCache]: Analyzing trace with hash -428093327, now seen corresponding path program 1 times [2018-11-06 19:38:28,332 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:28,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:28,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:28,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:28,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-11-06 19:38:28,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:28,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:28,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:28,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:28,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:28,905 INFO L87 Difference]: Start difference. First operand 15956 states and 17936 transitions. Second operand 4 states. [2018-11-06 19:38:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:33,827 INFO L93 Difference]: Finished difference Result 48494 states and 55980 transitions. [2018-11-06 19:38:33,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:33,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 483 [2018-11-06 19:38:33,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:33,864 INFO L225 Difference]: With dead ends: 48494 [2018-11-06 19:38:33,865 INFO L226 Difference]: Without dead ends: 29066 [2018-11-06 19:38:33,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:33,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2018-11-06 19:38:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 29066. [2018-11-06 19:38:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29066 states. [2018-11-06 19:38:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29066 states to 29066 states and 31982 transitions. [2018-11-06 19:38:34,211 INFO L78 Accepts]: Start accepts. Automaton has 29066 states and 31982 transitions. Word has length 483 [2018-11-06 19:38:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:34,212 INFO L480 AbstractCegarLoop]: Abstraction has 29066 states and 31982 transitions. [2018-11-06 19:38:34,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 29066 states and 31982 transitions. [2018-11-06 19:38:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-11-06 19:38:34,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:34,234 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:34,234 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:34,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash 171577271, now seen corresponding path program 1 times [2018-11-06 19:38:34,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:34,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:34,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:34,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:34,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 19:38:34,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:34,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:34,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:34,781 INFO L87 Difference]: Start difference. First operand 29066 states and 31982 transitions. Second operand 4 states. [2018-11-06 19:38:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:39,675 INFO L93 Difference]: Finished difference Result 101663 states and 112527 transitions. [2018-11-06 19:38:39,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:39,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 616 [2018-11-06 19:38:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:39,765 INFO L225 Difference]: With dead ends: 101663 [2018-11-06 19:38:39,765 INFO L226 Difference]: Without dead ends: 72599 [2018-11-06 19:38:39,799 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 19:38:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72599 states. [2018-11-06 19:38:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72599 to 70526. [2018-11-06 19:38:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70526 states. [2018-11-06 19:38:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70526 states to 70526 states and 76349 transitions. [2018-11-06 19:38:40,574 INFO L78 Accepts]: Start accepts. Automaton has 70526 states and 76349 transitions. Word has length 616 [2018-11-06 19:38:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:40,575 INFO L480 AbstractCegarLoop]: Abstraction has 70526 states and 76349 transitions. [2018-11-06 19:38:40,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:40,575 INFO L276 IsEmpty]: Start isEmpty. Operand 70526 states and 76349 transitions. [2018-11-06 19:38:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-11-06 19:38:40,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:40,612 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:40,612 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:40,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash -11842296, now seen corresponding path program 1 times [2018-11-06 19:38:40,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:40,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:40,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:40,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:40,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2018-11-06 19:38:42,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:42,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:38:42,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:38:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:38:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:38:42,003 INFO L87 Difference]: Start difference. First operand 70526 states and 76349 transitions. Second operand 3 states. [2018-11-06 19:38:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:45,586 INFO L93 Difference]: Finished difference Result 141050 states and 152696 transitions. [2018-11-06 19:38:45,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:38:45,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 791 [2018-11-06 19:38:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:45,657 INFO L225 Difference]: With dead ends: 141050 [2018-11-06 19:38:45,658 INFO L226 Difference]: Without dead ends: 70526 [2018-11-06 19:38:45,698 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 5 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 19:38:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70526 states. [2018-11-06 19:38:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70526 to 70526. [2018-11-06 19:38:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70526 states. [2018-11-06 19:38:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70526 states to 70526 states and 75156 transitions. [2018-11-06 19:38:46,372 INFO L78 Accepts]: Start accepts. Automaton has 70526 states and 75156 transitions. Word has length 791 [2018-11-06 19:38:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:46,373 INFO L480 AbstractCegarLoop]: Abstraction has 70526 states and 75156 transitions. [2018-11-06 19:38:46,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:38:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 70526 states and 75156 transitions. [2018-11-06 19:38:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2018-11-06 19:38:46,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:46,403 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:46,403 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:46,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash -216092287, now seen corresponding path program 1 times [2018-11-06 19:38:46,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:46,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:46,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:46,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:46,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2018-11-06 19:38:47,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:38:47,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:38:47,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:38:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:38:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:38:47,837 INFO L87 Difference]: Start difference. First operand 70526 states and 75156 transitions. Second operand 4 states. [2018-11-06 19:38:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:38:53,622 INFO L93 Difference]: Finished difference Result 159707 states and 170262 transitions. [2018-11-06 19:38:53,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:38:53,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 879 [2018-11-06 19:38:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:38:53,712 INFO L225 Difference]: With dead ends: 159707 [2018-11-06 19:38:53,712 INFO L226 Difference]: Without dead ends: 82949 [2018-11-06 19:38:53,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 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 19:38:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82949 states. [2018-11-06 19:38:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82949 to 82949. [2018-11-06 19:38:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82949 states. [2018-11-06 19:38:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82949 states to 82949 states and 86634 transitions. [2018-11-06 19:38:54,466 INFO L78 Accepts]: Start accepts. Automaton has 82949 states and 86634 transitions. Word has length 879 [2018-11-06 19:38:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:38:54,467 INFO L480 AbstractCegarLoop]: Abstraction has 82949 states and 86634 transitions. [2018-11-06 19:38:54,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:38:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 82949 states and 86634 transitions. [2018-11-06 19:38:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-11-06 19:38:54,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:38:54,506 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:38:54,506 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:38:54,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:38:54,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1310648929, now seen corresponding path program 1 times [2018-11-06 19:38:54,507 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:38:54,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:38:54,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:54,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:54,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:38:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:55,973 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-11-06 19:38:57,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 945 proven. 201 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 19:38:57,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:38:57,851 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 19:38:57,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:38:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:38:58,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:38:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2018-11-06 19:38:58,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:38:58,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-11-06 19:38:58,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 19:38:58,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 19:38:58,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:38:58,761 INFO L87 Difference]: Start difference. First operand 82949 states and 86634 transitions. Second operand 10 states. [2018-11-06 19:39:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:08,511 INFO L93 Difference]: Finished difference Result 169637 states and 177110 transitions. [2018-11-06 19:39:08,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:39:08,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 988 [2018-11-06 19:39:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:08,579 INFO L225 Difference]: With dead ends: 169637 [2018-11-06 19:39:08,580 INFO L226 Difference]: Without dead ends: 86690 [2018-11-06 19:39:08,614 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 987 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:39:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86690 states. [2018-11-06 19:39:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86690 to 86404. [2018-11-06 19:39:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86404 states. [2018-11-06 19:39:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86404 states to 86404 states and 89737 transitions. [2018-11-06 19:39:09,305 INFO L78 Accepts]: Start accepts. Automaton has 86404 states and 89737 transitions. Word has length 988 [2018-11-06 19:39:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:09,306 INFO L480 AbstractCegarLoop]: Abstraction has 86404 states and 89737 transitions. [2018-11-06 19:39:09,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 19:39:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 86404 states and 89737 transitions. [2018-11-06 19:39:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1540 [2018-11-06 19:39:09,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:09,342 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 19:39:09,342 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:09,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:09,343 INFO L82 PathProgramCache]: Analyzing trace with hash -181847221, now seen corresponding path program 1 times [2018-11-06 19:39:09,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:09,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:09,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:09,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:09,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2606 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 2523 trivial. 0 not checked. [2018-11-06 19:39:11,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:11,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:11,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:11,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:11,707 INFO L87 Difference]: Start difference. First operand 86404 states and 89737 transitions. Second operand 4 states. [2018-11-06 19:39:15,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:15,769 INFO L93 Difference]: Finished difference Result 185935 states and 193309 transitions. [2018-11-06 19:39:15,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:39:15,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1539 [2018-11-06 19:39:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:15,865 INFO L225 Difference]: With dead ends: 185935 [2018-11-06 19:39:15,865 INFO L226 Difference]: Without dead ends: 98149 [2018-11-06 19:39:15,912 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 19:39:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98149 states. [2018-11-06 19:39:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98149 to 97458. [2018-11-06 19:39:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97458 states. [2018-11-06 19:39:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97458 states to 97458 states and 100959 transitions. [2018-11-06 19:39:16,726 INFO L78 Accepts]: Start accepts. Automaton has 97458 states and 100959 transitions. Word has length 1539 [2018-11-06 19:39:16,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:16,727 INFO L480 AbstractCegarLoop]: Abstraction has 97458 states and 100959 transitions. [2018-11-06 19:39:16,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 97458 states and 100959 transitions. [2018-11-06 19:39:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2018-11-06 19:39:16,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:16,769 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:16,769 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:16,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:16,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2081053523, now seen corresponding path program 1 times [2018-11-06 19:39:16,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:16,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:16,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:16,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:16,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2794 backedges. 1671 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2018-11-06 19:39:19,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:19,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:19,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:19,811 INFO L87 Difference]: Start difference. First operand 97458 states and 100959 transitions. Second operand 4 states. [2018-11-06 19:39:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:24,369 INFO L93 Difference]: Finished difference Result 194914 states and 201932 transitions. [2018-11-06 19:39:24,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:24,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1688 [2018-11-06 19:39:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:24,467 INFO L225 Difference]: With dead ends: 194914 [2018-11-06 19:39:24,467 INFO L226 Difference]: Without dead ends: 97457 [2018-11-06 19:39:24,515 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97457 states. [2018-11-06 19:39:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97457 to 96075. [2018-11-06 19:39:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96075 states. [2018-11-06 19:39:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96075 states to 96075 states and 98957 transitions. [2018-11-06 19:39:25,301 INFO L78 Accepts]: Start accepts. Automaton has 96075 states and 98957 transitions. Word has length 1688 [2018-11-06 19:39:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:25,302 INFO L480 AbstractCegarLoop]: Abstraction has 96075 states and 98957 transitions. [2018-11-06 19:39:25,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 96075 states and 98957 transitions. [2018-11-06 19:39:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2018-11-06 19:39:25,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:25,345 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:25,345 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:25,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash 928542765, now seen corresponding path program 1 times [2018-11-06 19:39:25,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:25,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:25,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:25,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:25,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:26,662 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-11-06 19:39:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2800 backedges. 1949 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2018-11-06 19:39:28,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:39:28,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:39:28,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:39:28,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:39:28,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:28,052 INFO L87 Difference]: Start difference. First operand 96075 states and 98957 transitions. Second operand 4 states. [2018-11-06 19:39:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:39:33,329 INFO L93 Difference]: Finished difference Result 205963 states and 212503 transitions. [2018-11-06 19:39:33,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:39:33,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1689 [2018-11-06 19:39:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:39:33,437 INFO L225 Difference]: With dead ends: 205963 [2018-11-06 19:39:33,437 INFO L226 Difference]: Without dead ends: 109197 [2018-11-06 19:39:33,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:39:33,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109197 states. [2018-11-06 19:39:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109197 to 105742. [2018-11-06 19:39:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105742 states. [2018-11-06 19:39:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105742 states to 105742 states and 108544 transitions. [2018-11-06 19:39:34,513 INFO L78 Accepts]: Start accepts. Automaton has 105742 states and 108544 transitions. Word has length 1689 [2018-11-06 19:39:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:39:34,514 INFO L480 AbstractCegarLoop]: Abstraction has 105742 states and 108544 transitions. [2018-11-06 19:39:34,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:39:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 105742 states and 108544 transitions. [2018-11-06 19:39:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1869 [2018-11-06 19:39:34,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:39:34,569 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:39:34,569 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:39:34,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:39:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 896994845, now seen corresponding path program 1 times [2018-11-06 19:39:34,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:39:34,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:39:34,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:34,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:34,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:39:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:35,828 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 19:39:36,127 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-11-06 19:39:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 2691 proven. 108 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-11-06 19:39:38,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:39:38,212 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 19:39:38,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:39:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:39:38,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:39:43,410 WARN L179 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-11-06 19:39:43,790 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 32 [2018-11-06 19:39:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 2277 proven. 320 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2018-11-06 19:39:53,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:39:53,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-06 19:39:53,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:39:53,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:39:53,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:39:53,788 INFO L87 Difference]: Start difference. First operand 105742 states and 108544 transitions. Second operand 8 states. [2018-11-06 19:40:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:40:34,208 INFO L93 Difference]: Finished difference Result 225299 states and 231201 transitions. [2018-11-06 19:40:34,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:40:34,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1868 [2018-11-06 19:40:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:40:34,327 INFO L225 Difference]: With dead ends: 225299 [2018-11-06 19:40:34,328 INFO L226 Difference]: Without dead ends: 120250 [2018-11-06 19:40:34,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1868 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:40:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120250 states. [2018-11-06 19:40:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120250 to 107120. [2018-11-06 19:40:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107120 states. [2018-11-06 19:40:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107120 states to 107120 states and 109629 transitions. [2018-11-06 19:40:35,288 INFO L78 Accepts]: Start accepts. Automaton has 107120 states and 109629 transitions. Word has length 1868 [2018-11-06 19:40:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:40:35,289 INFO L480 AbstractCegarLoop]: Abstraction has 107120 states and 109629 transitions. [2018-11-06 19:40:35,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:40:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 107120 states and 109629 transitions. [2018-11-06 19:40:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1898 [2018-11-06 19:40:35,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:40:35,332 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:40:35,332 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:40:35,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:40:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1771248917, now seen corresponding path program 1 times [2018-11-06 19:40:35,333 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:40:35,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:40:35,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:35,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:35,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:40:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 2715 proven. 69 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-11-06 19:40:38,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:40:38,636 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 19:40:38,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:40:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:40:39,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:40:39,351 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 [2018-11-06 19:40:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3483 backedges. 1808 proven. 93 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2018-11-06 19:40:45,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:40:45,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:40:45,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:40:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:40:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:40:45,868 INFO L87 Difference]: Start difference. First operand 107120 states and 109629 transitions. Second operand 7 states. [2018-11-06 19:41:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:41:01,525 INFO L93 Difference]: Finished difference Result 238421 states and 244402 transitions. [2018-11-06 19:41:01,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:41:01,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1897 [2018-11-06 19:41:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:41:01,662 INFO L225 Difference]: With dead ends: 238421 [2018-11-06 19:41:01,662 INFO L226 Difference]: Without dead ends: 131994 [2018-11-06 19:41:01,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1897 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:41:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131994 states. [2018-11-06 19:41:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131994 to 110572. [2018-11-06 19:41:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110572 states. [2018-11-06 19:41:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110572 states to 110572 states and 112949 transitions. [2018-11-06 19:41:02,777 INFO L78 Accepts]: Start accepts. Automaton has 110572 states and 112949 transitions. Word has length 1897 [2018-11-06 19:41:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:41:02,778 INFO L480 AbstractCegarLoop]: Abstraction has 110572 states and 112949 transitions. [2018-11-06 19:41:02,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:41:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 110572 states and 112949 transitions. [2018-11-06 19:41:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2087 [2018-11-06 19:41:02,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:41:02,842 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:41:02,842 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:41:02,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:41:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1567677210, now seen corresponding path program 1 times [2018-11-06 19:41:02,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:41:02,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:41:02,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:02,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:02,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:41:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:04,164 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-06 19:41:04,452 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 19:41:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4438 backedges. 2109 proven. 1734 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-11-06 19:41:09,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:41:09,523 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 19:41:09,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:41:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:41:09,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:41:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4438 backedges. 2497 proven. 0 refuted. 0 times theorem prover too weak. 1941 trivial. 0 not checked. [2018-11-06 19:41:11,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:41:11,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 19:41:11,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:41:11,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:41:11,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:41:11,903 INFO L87 Difference]: Start difference. First operand 110572 states and 112949 transitions. Second operand 12 states. Received shutdown request... [2018-11-06 19:41:22,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 19:41:22,669 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:41:22,676 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:41:22,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:41:22 BoogieIcfgContainer [2018-11-06 19:41:22,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:41:22,677 INFO L168 Benchmark]: Toolchain (without parser) took 230421.51 ms. Allocated memory was 1.6 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -354.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,678 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:41:22,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1961.42 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 472.60 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,681 INFO L168 Benchmark]: Boogie Preprocessor took 217.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,681 INFO L168 Benchmark]: RCFGBuilder took 6707.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 525.0 MB). Peak memory consumption was 525.0 MB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,682 INFO L168 Benchmark]: TraceAbstraction took 221057.37 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -102.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 19:41:22,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1961.42 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 472.60 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6707.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 525.0 MB). Peak memory consumption was 525.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221057.37 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -102.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (110572states) and FLOYD_HOARE automaton (currently 20 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (9577 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 220.9s OverallTime, 16 OverallIterations, 9 TraceHistogramMax, 153.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8611 SDtfs, 34472 SDslu, 1436 SDs, 0 SdLazy, 100643 SolverSat, 10347 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7346 GetRequests, 7252 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110572occurred in iteration=15, 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: 8.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 50085 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 37.4s InterpolantComputationTime, 22819 NumberOfCodeBlocks, 22819 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 22798 ConstructedInterpolants, 1120 QuantifiedInterpolants, 151504080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 8254 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 21 InterpolantComputations, 14 PerfectInterpolantSequences, 35058/37587 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown