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/Problem15_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:29:05,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:29:05,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:29:05,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:29:05,442 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:29:05,443 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:29:05,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:29:05,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:29:05,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:29:05,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:29:05,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:29:05,451 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:29:05,452 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:29:05,453 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:29:05,454 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:29:05,455 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:29:05,456 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:29:05,458 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:29:05,460 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:29:05,464 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:29:05,466 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:29:05,472 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:29:05,477 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:29:05,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:29:05,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:29:05,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:29:05,483 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:29:05,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:29:05,487 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:29:05,488 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:29:05,489 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:29:05,491 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:29:05,496 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 21:29:05,528 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:29:05,528 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:29:05,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:29:05,530 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:29:05,531 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:29:05,531 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:29:05,531 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:29:05,531 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:29:05,531 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:29:05,533 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:29:05,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:29:05,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:29:05,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:29:05,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:29:05,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:29:05,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:29:05,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:29:05,534 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:29:05,535 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:29:05,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:29:05,535 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:29:05,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:29:05,535 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:29:05,536 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:29:05,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:29:05,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:29:05,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:29:05,536 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:29:05,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:29:05,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:29:05,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:29:05,629 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:29:05,629 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:29:05,630 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-11-06 21:29:05,702 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcecd8abe/0c23553a95954878a857a96ee7fe8105/FLAG7634024f3 [2018-11-06 21:29:06,414 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:29:06,415 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-11-06 21:29:06,438 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcecd8abe/0c23553a95954878a857a96ee7fe8105/FLAG7634024f3 [2018-11-06 21:29:06,462 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcecd8abe/0c23553a95954878a857a96ee7fe8105 [2018-11-06 21:29:06,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:29:06,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:29:06,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:29:06,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:29:06,481 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:29:06,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:29:06" (1/1) ... [2018-11-06 21:29:06,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:06, skipping insertion in model container [2018-11-06 21:29:06,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:29:06" (1/1) ... [2018-11-06 21:29:06,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:29:06,603 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:29:07,374 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:29:07,379 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:29:07,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:29:07,717 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:29:07,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07 WrapperNode [2018-11-06 21:29:07,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:29:07,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:29:07,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:29:07,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:29:07,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:07,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:29:08,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:29:08,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:29:08,121 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:29:08,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (1/1) ... [2018-11-06 21:29:08,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:29:08,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:29:08,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:29:08,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:29:08,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (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 21:29:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:29:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:29:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:29:15,200 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:29:15,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:29:15 BoogieIcfgContainer [2018-11-06 21:29:15,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:29:15,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:29:15,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:29:15,206 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:29:15,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:29:06" (1/3) ... [2018-11-06 21:29:15,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e17c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:29:15, skipping insertion in model container [2018-11-06 21:29:15,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:29:07" (2/3) ... [2018-11-06 21:29:15,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e17c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:29:15, skipping insertion in model container [2018-11-06 21:29:15,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:29:15" (3/3) ... [2018-11-06 21:29:15,210 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label13_true-unreach-call.c [2018-11-06 21:29:15,221 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:29:15,232 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:29:15,252 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:29:15,294 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:29:15,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:29:15,295 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:29:15,295 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:29:15,295 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:29:15,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:29:15,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:29:15,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:29:15,296 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:29:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-11-06 21:29:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-06 21:29:15,338 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:15,339 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:15,341 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:15,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:15,348 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-11-06 21:29:15,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:15,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:15,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:15,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:15,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:15,814 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 21:29:15,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:15,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:29:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:15,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:15,844 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-11-06 21:29:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:22,364 INFO L93 Difference]: Finished difference Result 1510 states and 2778 transitions. [2018-11-06 21:29:22,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:22,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-11-06 21:29:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:22,394 INFO L225 Difference]: With dead ends: 1510 [2018-11-06 21:29:22,394 INFO L226 Difference]: Without dead ends: 1078 [2018-11-06 21:29:22,400 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 21:29:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2018-11-06 21:29:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 742. [2018-11-06 21:29:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2018-11-06 21:29:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1239 transitions. [2018-11-06 21:29:22,542 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1239 transitions. Word has length 49 [2018-11-06 21:29:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:22,543 INFO L480 AbstractCegarLoop]: Abstraction has 742 states and 1239 transitions. [2018-11-06 21:29:22,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1239 transitions. [2018-11-06 21:29:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-06 21:29:22,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:22,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:22,554 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:22,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash 50618019, now seen corresponding path program 1 times [2018-11-06 21:29:22,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:22,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:22,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:22,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:22,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:22,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:22,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:29:22,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:22,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:22,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:22,896 INFO L87 Difference]: Start difference. First operand 742 states and 1239 transitions. Second operand 4 states. [2018-11-06 21:29:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:28,254 INFO L93 Difference]: Finished difference Result 2749 states and 4685 transitions. [2018-11-06 21:29:28,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:28,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-11-06 21:29:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:28,267 INFO L225 Difference]: With dead ends: 2749 [2018-11-06 21:29:28,268 INFO L226 Difference]: Without dead ends: 2009 [2018-11-06 21:29:28,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2018-11-06 21:29:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1342. [2018-11-06 21:29:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2018-11-06 21:29:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2021 transitions. [2018-11-06 21:29:28,317 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2021 transitions. Word has length 118 [2018-11-06 21:29:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:28,317 INFO L480 AbstractCegarLoop]: Abstraction has 1342 states and 2021 transitions. [2018-11-06 21:29:28,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2021 transitions. [2018-11-06 21:29:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-06 21:29:28,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:28,325 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:29:28,325 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:28,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2043006793, now seen corresponding path program 1 times [2018-11-06 21:29:28,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:28,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:28,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:29,102 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2018-11-06 21:29:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:29,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:29,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:29:29,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:29:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:29:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:29:29,191 INFO L87 Difference]: Start difference. First operand 1342 states and 2021 transitions. Second operand 6 states. [2018-11-06 21:29:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:40,070 INFO L93 Difference]: Finished difference Result 5410 states and 8155 transitions. [2018-11-06 21:29:40,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:29:40,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-06 21:29:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:40,093 INFO L225 Difference]: With dead ends: 5410 [2018-11-06 21:29:40,094 INFO L226 Difference]: Without dead ends: 4070 [2018-11-06 21:29:40,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:29:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2018-11-06 21:29:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3753. [2018-11-06 21:29:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3753 states. [2018-11-06 21:29:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 4926 transitions. [2018-11-06 21:29:40,174 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 4926 transitions. Word has length 126 [2018-11-06 21:29:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:40,175 INFO L480 AbstractCegarLoop]: Abstraction has 3753 states and 4926 transitions. [2018-11-06 21:29:40,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:29:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 4926 transitions. [2018-11-06 21:29:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-06 21:29:40,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:40,179 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:40,180 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:40,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 947509284, now seen corresponding path program 1 times [2018-11-06 21:29:40,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:40,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:40,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:40,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:40,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 164 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:40,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:29:40,707 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 21:29:40,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:40,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:29:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:41,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:29:41,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-11-06 21:29:41,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 21:29:41,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 21:29:41,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:29:41,289 INFO L87 Difference]: Start difference. First operand 3753 states and 4926 transitions. Second operand 12 states. [2018-11-06 21:29:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:55,104 INFO L93 Difference]: Finished difference Result 12090 states and 16247 transitions. [2018-11-06 21:29:55,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 21:29:55,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 218 [2018-11-06 21:29:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:55,135 INFO L225 Difference]: With dead ends: 12090 [2018-11-06 21:29:55,135 INFO L226 Difference]: Without dead ends: 6213 [2018-11-06 21:29:55,143 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-11-06 21:29:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6213 states. [2018-11-06 21:29:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6213 to 5550. [2018-11-06 21:29:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5550 states. [2018-11-06 21:29:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 6518 transitions. [2018-11-06 21:29:55,244 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 6518 transitions. Word has length 218 [2018-11-06 21:29:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:55,245 INFO L480 AbstractCegarLoop]: Abstraction has 5550 states and 6518 transitions. [2018-11-06 21:29:55,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 21:29:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 6518 transitions. [2018-11-06 21:29:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-11-06 21:29:55,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:55,249 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:29:55,250 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:55,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 74061102, now seen corresponding path program 1 times [2018-11-06 21:29:55,251 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:55,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:55,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:55,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:55,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:29:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:29:55,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:29:55,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:29:55,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:29:55,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:29:55,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:55,608 INFO L87 Difference]: Start difference. First operand 5550 states and 6518 transitions. Second operand 4 states. [2018-11-06 21:29:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:29:58,795 INFO L93 Difference]: Finished difference Result 16203 states and 19575 transitions. [2018-11-06 21:29:58,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:29:58,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-11-06 21:29:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:29:58,836 INFO L225 Difference]: With dead ends: 16203 [2018-11-06 21:29:58,836 INFO L226 Difference]: Without dead ends: 10655 [2018-11-06 21:29:58,845 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:29:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10655 states. [2018-11-06 21:29:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10655 to 10348. [2018-11-06 21:29:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10348 states. [2018-11-06 21:29:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 12049 transitions. [2018-11-06 21:29:59,055 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 12049 transitions. Word has length 332 [2018-11-06 21:29:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:29:59,057 INFO L480 AbstractCegarLoop]: Abstraction has 10348 states and 12049 transitions. [2018-11-06 21:29:59,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:29:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 12049 transitions. [2018-11-06 21:29:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-06 21:29:59,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:29:59,074 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:29:59,075 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:29:59,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:29:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash 773194967, now seen corresponding path program 1 times [2018-11-06 21:29:59,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:29:59,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:29:59,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:59,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:29:59,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:29:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:00,152 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2018-11-06 21:30:00,346 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-06 21:30:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 282 proven. 11 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:30:00,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:00,542 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 21:30:00,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:00,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:30:00,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:30:00,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-11-06 21:30:00,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:30:00,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:30:00,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:30:00,850 INFO L87 Difference]: Start difference. First operand 10348 states and 12049 transitions. Second operand 8 states. [2018-11-06 21:30:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:12,648 INFO L93 Difference]: Finished difference Result 28217 states and 32965 transitions. [2018-11-06 21:30:12,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 21:30:12,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 505 [2018-11-06 21:30:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:12,701 INFO L225 Difference]: With dead ends: 28217 [2018-11-06 21:30:12,701 INFO L226 Difference]: Without dead ends: 17871 [2018-11-06 21:30:12,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 510 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:30:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17871 states. [2018-11-06 21:30:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17871 to 14398. [2018-11-06 21:30:12,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14398 states. [2018-11-06 21:30:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14398 states to 14398 states and 16206 transitions. [2018-11-06 21:30:12,965 INFO L78 Accepts]: Start accepts. Automaton has 14398 states and 16206 transitions. Word has length 505 [2018-11-06 21:30:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:12,966 INFO L480 AbstractCegarLoop]: Abstraction has 14398 states and 16206 transitions. [2018-11-06 21:30:12,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:30:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14398 states and 16206 transitions. [2018-11-06 21:30:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-11-06 21:30:12,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:12,995 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:30:12,995 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:12,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:12,996 INFO L82 PathProgramCache]: Analyzing trace with hash -252788540, now seen corresponding path program 1 times [2018-11-06 21:30:12,996 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:12,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:13,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:13,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:13,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-11-06 21:30:13,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:30:13,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:30:13,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:30:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:30:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:13,645 INFO L87 Difference]: Start difference. First operand 14398 states and 16206 transitions. Second operand 3 states. [2018-11-06 21:30:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:16,836 INFO L93 Difference]: Finished difference Result 29092 states and 32763 transitions. [2018-11-06 21:30:16,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:30:16,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 649 [2018-11-06 21:30:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:16,858 INFO L225 Difference]: With dead ends: 29092 [2018-11-06 21:30:16,859 INFO L226 Difference]: Without dead ends: 14696 [2018-11-06 21:30:16,870 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14696 states. [2018-11-06 21:30:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14696 to 14396. [2018-11-06 21:30:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14396 states. [2018-11-06 21:30:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14396 states to 14396 states and 16202 transitions. [2018-11-06 21:30:17,074 INFO L78 Accepts]: Start accepts. Automaton has 14396 states and 16202 transitions. Word has length 649 [2018-11-06 21:30:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:17,075 INFO L480 AbstractCegarLoop]: Abstraction has 14396 states and 16202 transitions. [2018-11-06 21:30:17,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:30:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 14396 states and 16202 transitions. [2018-11-06 21:30:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-11-06 21:30:17,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:17,111 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:30:17,112 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:17,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash -357435385, now seen corresponding path program 1 times [2018-11-06 21:30:17,112 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:17,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:17,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:17,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:17,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2018-11-06 21:30:17,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:30:17,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:30:17,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:30:17,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:30:17,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:17,763 INFO L87 Difference]: Start difference. First operand 14396 states and 16202 transitions. Second operand 3 states. [2018-11-06 21:30:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:19,957 INFO L93 Difference]: Finished difference Result 37235 states and 41823 transitions. [2018-11-06 21:30:19,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:30:19,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 721 [2018-11-06 21:30:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:20,004 INFO L225 Difference]: With dead ends: 37235 [2018-11-06 21:30:20,005 INFO L226 Difference]: Without dead ends: 22841 [2018-11-06 21:30:20,021 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:30:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22841 states. [2018-11-06 21:30:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22841 to 22535. [2018-11-06 21:30:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22535 states. [2018-11-06 21:30:20,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22535 states to 22535 states and 24941 transitions. [2018-11-06 21:30:20,317 INFO L78 Accepts]: Start accepts. Automaton has 22535 states and 24941 transitions. Word has length 721 [2018-11-06 21:30:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:20,318 INFO L480 AbstractCegarLoop]: Abstraction has 22535 states and 24941 transitions. [2018-11-06 21:30:20,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:30:20,318 INFO L276 IsEmpty]: Start isEmpty. Operand 22535 states and 24941 transitions. [2018-11-06 21:30:20,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-11-06 21:30:20,369 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:20,370 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 21:30:20,370 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:20,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:20,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1383081430, now seen corresponding path program 1 times [2018-11-06 21:30:20,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:20,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:20,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:20,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:20,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:21,240 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-11-06 21:30:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 610 proven. 47 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-06 21:30:21,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:21,978 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 21:30:21,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:22,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:22,940 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 27 [2018-11-06 21:30:23,385 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 38 [2018-11-06 21:30:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 610 proven. 47 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-11-06 21:30:26,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:30:26,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 11 [2018-11-06 21:30:26,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:30:26,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:30:26,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:30:26,361 INFO L87 Difference]: Start difference. First operand 22535 states and 24941 transitions. Second operand 11 states. [2018-11-06 21:30:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:30:51,814 INFO L93 Difference]: Finished difference Result 63545 states and 71252 transitions. [2018-11-06 21:30:51,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 21:30:51,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 791 [2018-11-06 21:30:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:30:51,907 INFO L225 Difference]: With dead ends: 63545 [2018-11-06 21:30:51,907 INFO L226 Difference]: Without dead ends: 41012 [2018-11-06 21:30:51,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 801 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2018-11-06 21:30:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41012 states. [2018-11-06 21:30:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41012 to 31257. [2018-11-06 21:30:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31257 states. [2018-11-06 21:30:52,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31257 states to 31257 states and 33746 transitions. [2018-11-06 21:30:52,768 INFO L78 Accepts]: Start accepts. Automaton has 31257 states and 33746 transitions. Word has length 791 [2018-11-06 21:30:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:30:52,769 INFO L480 AbstractCegarLoop]: Abstraction has 31257 states and 33746 transitions. [2018-11-06 21:30:52,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 21:30:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 31257 states and 33746 transitions. [2018-11-06 21:30:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-11-06 21:30:52,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:30:52,860 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:52,860 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:30:52,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:30:52,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1908435158, now seen corresponding path program 1 times [2018-11-06 21:30:52,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:30:52,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:30:52,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:52,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:52,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:30:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 1155 proven. 306 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-11-06 21:30:55,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:30:55,391 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 21:30:55,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:30:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:30:55,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:30:56,495 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_38 Int)) (let ((.cse0 (mod (+ v_prenex_38 17705) 299928))) (and (= .cse0 0) (<= .cse0 (+ c_~a29~0 300071))))) (exists ((v_~a29~0_897 Int)) (let ((.cse1 (mod (+ v_~a29~0_897 17705) 299928))) (and (not (= .cse1 0)) (<= .cse1 (+ c_~a29~0 599999)) (< (+ v_~a29~0_897 317633) 0)))) (exists ((v_prenex_37 Int)) (and (<= (mod (+ v_prenex_37 17705) 299928) (+ c_~a29~0 300071)) (<= 0 (+ v_prenex_37 317633))))) is different from true [2018-11-06 21:31:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1854 backedges. 870 proven. 0 refuted. 0 times theorem prover too weak. 937 trivial. 47 not checked. [2018-11-06 21:31:00,100 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:31:00,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-06 21:31:00,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:31:00,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:31:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2018-11-06 21:31:00,102 INFO L87 Difference]: Start difference. First operand 31257 states and 33746 transitions. Second operand 7 states. [2018-11-06 21:31:27,834 WARN L179 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-11-06 21:31:35,887 WARN L179 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-11-06 21:31:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:31:42,098 INFO L93 Difference]: Finished difference Result 92074 states and 99371 transitions. [2018-11-06 21:31:42,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:31:42,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2018-11-06 21:31:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:31:42,207 INFO L225 Difference]: With dead ends: 92074 [2018-11-06 21:31:42,207 INFO L226 Difference]: Without dead ends: 60819 [2018-11-06 21:31:42,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=4, NotChecked=16, Total=110 [2018-11-06 21:31:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60819 states. [2018-11-06 21:31:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60819 to 36411. [2018-11-06 21:31:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36411 states. [2018-11-06 21:31:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36411 states to 36411 states and 38587 transitions. [2018-11-06 21:31:42,802 INFO L78 Accepts]: Start accepts. Automaton has 36411 states and 38587 transitions. Word has length 1037 [2018-11-06 21:31:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:31:42,803 INFO L480 AbstractCegarLoop]: Abstraction has 36411 states and 38587 transitions. [2018-11-06 21:31:42,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:31:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand 36411 states and 38587 transitions. [2018-11-06 21:31:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1272 [2018-11-06 21:31:42,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:31:42,902 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:31:42,902 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:31:42,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:31:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1178000598, now seen corresponding path program 1 times [2018-11-06 21:31:42,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:31:42,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:31:42,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:42,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:31:42,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:31:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3060 backedges. 1775 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2018-11-06 21:31:44,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:31:44,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:31:44,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:31:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:31:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:31:44,281 INFO L87 Difference]: Start difference. First operand 36411 states and 38587 transitions. Second operand 3 states. [2018-11-06 21:31:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:31:45,896 INFO L93 Difference]: Finished difference Result 76261 states and 80306 transitions. [2018-11-06 21:31:45,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:31:45,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1271 [2018-11-06 21:31:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:31:45,921 INFO L225 Difference]: With dead ends: 76261 [2018-11-06 21:31:45,921 INFO L226 Difference]: Without dead ends: 21179 [2018-11-06 21:31:45,947 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:31:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-11-06 21:31:46,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 14046. [2018-11-06 21:31:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14046 states. [2018-11-06 21:31:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 14427 transitions. [2018-11-06 21:31:46,162 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 14427 transitions. Word has length 1271 [2018-11-06 21:31:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:31:46,163 INFO L480 AbstractCegarLoop]: Abstraction has 14046 states and 14427 transitions. [2018-11-06 21:31:46,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:31:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 14427 transitions. [2018-11-06 21:31:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1316 [2018-11-06 21:31:46,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:31:46,192 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:46,192 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:31:46,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:31:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash 964213786, now seen corresponding path program 1 times [2018-11-06 21:31:46,193 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:31:46,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:31:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:46,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:31:46,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:31:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2925 backedges. 1668 proven. 0 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2018-11-06 21:31:47,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:31:47,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:31:47,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:31:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:31:47,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:31:47,909 INFO L87 Difference]: Start difference. First operand 14046 states and 14427 transitions. Second operand 3 states. [2018-11-06 21:31:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:31:49,046 INFO L93 Difference]: Finished difference Result 27786 states and 28504 transitions. [2018-11-06 21:31:49,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:31:49,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1315 [2018-11-06 21:31:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:31:49,061 INFO L225 Difference]: With dead ends: 27786 [2018-11-06 21:31:49,062 INFO L226 Difference]: Without dead ends: 13742 [2018-11-06 21:31:49,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:31:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13742 states. [2018-11-06 21:31:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13742 to 13142. [2018-11-06 21:31:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13142 states. [2018-11-06 21:31:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13142 states to 13142 states and 13394 transitions. [2018-11-06 21:31:49,233 INFO L78 Accepts]: Start accepts. Automaton has 13142 states and 13394 transitions. Word has length 1315 [2018-11-06 21:31:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:31:49,234 INFO L480 AbstractCegarLoop]: Abstraction has 13142 states and 13394 transitions. [2018-11-06 21:31:49,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:31:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13142 states and 13394 transitions. [2018-11-06 21:31:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2018-11-06 21:31:49,264 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:31:49,265 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-11-06 21:31:49,265 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:31:49,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:31:49,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1772878385, now seen corresponding path program 1 times [2018-11-06 21:31:49,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:31:49,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:31:49,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:49,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:31:49,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:31:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:31:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3546 backedges. 1869 proven. 233 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2018-11-06 21:31:52,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:31:52,380 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 21:31:52,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:31:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:31:52,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:31:54,058 WARN L179 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2018-11-06 21:31:54,188 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-11-06 21:31:54,358 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-11-06 21:31:54,563 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2018-11-06 21:31:54,790 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-11-06 21:32:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3546 backedges. 1991 proven. 192 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2018-11-06 21:32:00,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:32:00,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11] total 14 [2018-11-06 21:32:00,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 21:32:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 21:32:00,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-11-06 21:32:00,438 INFO L87 Difference]: Start difference. First operand 13142 states and 13394 transitions. Second operand 14 states. [2018-11-06 21:32:11,300 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-11-06 21:32:11,488 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-11-06 21:32:15,051 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2018-11-06 21:32:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:32:15,939 INFO L93 Difference]: Finished difference Result 34754 states and 35437 transitions. [2018-11-06 21:32:15,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 21:32:15,942 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1485 [2018-11-06 21:32:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:32:15,943 INFO L225 Difference]: With dead ends: 34754 [2018-11-06 21:32:15,943 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 21:32:15,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1509 GetRequests, 1483 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2018-11-06 21:32:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 21:32:15,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 21:32:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 21:32:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 21:32:15,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1485 [2018-11-06 21:32:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:32:15,950 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 21:32:15,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 21:32:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 21:32:15,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 21:32:15,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 21:32:16,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,221 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,820 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,979 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:16,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,545 WARN L179 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 689 DAG size of output: 546 [2018-11-06 21:32:17,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:17,849 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,157 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,189 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:18,824 WARN L179 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 689 DAG size of output: 546 [2018-11-06 21:32:18,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-06 21:32:19,635 WARN L179 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 626 DAG size of output: 501 [2018-11-06 21:32:33,003 WARN L179 SmtUtils]: Spent 13.36 s on a formula simplification. DAG size of input: 512 DAG size of output: 132 [2018-11-06 21:32:50,239 WARN L179 SmtUtils]: Spent 17.23 s on a formula simplification. DAG size of input: 512 DAG size of output: 132 Received shutdown request... [2018-11-06 21:32:59,190 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-11-06 21:32:59,191 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-11-06 21:32:59,193 INFO L168 Benchmark]: Toolchain (without parser) took 232718.49 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -713.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,194 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:32:59,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1241.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 401.70 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -808.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,197 INFO L168 Benchmark]: Boogie Preprocessor took 201.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,197 INFO L168 Benchmark]: RCFGBuilder took 6878.12 ms. Allocated memory is still 2.2 GB. Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 293.4 MB). Peak memory consumption was 293.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,198 INFO L168 Benchmark]: TraceAbstraction took 223989.42 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -348.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:32:59,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1241.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 401.70 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -808.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6878.12 ms. Allocated memory is still 2.2 GB. Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 293.4 MB). Peak memory consumption was 293.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223989.42 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -348.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 479. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown