java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 03:02:07,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 03:02:07,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 03:02:07,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 03:02:07,376 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 03:02:07,377 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 03:02:07,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 03:02:07,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 03:02:07,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 03:02:07,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 03:02:07,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 03:02:07,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 03:02:07,385 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 03:02:07,386 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 03:02:07,387 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 03:02:07,388 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 03:02:07,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 03:02:07,390 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 03:02:07,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 03:02:07,394 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 03:02:07,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 03:02:07,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 03:02:07,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 03:02:07,398 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 03:02:07,399 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 03:02:07,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 03:02:07,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 03:02:07,401 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 03:02:07,404 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 03:02:07,407 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 03:02:07,408 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 03:02:07,411 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 03:02:07,414 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 [2018-07-24 03:02:07,441 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 03:02:07,442 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 03:02:07,442 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 03:02:07,443 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 03:02:07,443 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 03:02:07,443 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 03:02:07,444 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 03:02:07,444 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 03:02:07,444 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 03:02:07,444 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 03:02:07,444 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 03:02:07,445 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 03:02:07,445 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 03:02:07,445 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 03:02:07,445 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 03:02:07,445 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 03:02:07,446 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 03:02:07,446 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 03:02:07,446 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 03:02:07,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 03:02:07,446 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 03:02:07,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 03:02:07,447 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 03:02:07,447 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 03:02:07,447 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 03:02:07,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 03:02:07,447 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 03:02:07,448 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 03:02:07,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 03:02:07,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 03:02:07,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 03:02:07,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 03:02:07,554 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 03:02:07,555 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-07-24 03:02:07,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4488093a5/6905c5b9a7674e33bb5f33b63df733b4/FLAGd500a0ab6 [2018-07-24 03:02:08,259 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 03:02:08,260 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-07-24 03:02:08,285 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4488093a5/6905c5b9a7674e33bb5f33b63df733b4/FLAGd500a0ab6 [2018-07-24 03:02:08,304 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4488093a5/6905c5b9a7674e33bb5f33b63df733b4 [2018-07-24 03:02:08,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 03:02:08,318 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 03:02:08,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 03:02:08,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 03:02:08,330 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 03:02:08,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:02:08" (1/1) ... [2018-07-24 03:02:08,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5996467c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:08, skipping insertion in model container [2018-07-24 03:02:08,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:02:08" (1/1) ... [2018-07-24 03:02:08,625 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 03:02:09,237 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:02:09,254 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 03:02:09,568 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 03:02:09,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09 WrapperNode [2018-07-24 03:02:09,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 03:02:09,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 03:02:09,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 03:02:09,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 03:02:09,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:09,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 03:02:10,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 03:02:10,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 03:02:10,017 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 03:02:10,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (1/1) ... [2018-07-24 03:02:10,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 03:02:10,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 03:02:10,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 03:02:10,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 03:02:10,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (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 [2018-07-24 03:02:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 03:02:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 03:02:10,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 03:02:17,808 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 03:02:17,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:02:17 BoogieIcfgContainer [2018-07-24 03:02:17,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 03:02:17,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 03:02:17,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 03:02:17,814 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 03:02:17,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:02:08" (1/3) ... [2018-07-24 03:02:17,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216f0779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:02:17, skipping insertion in model container [2018-07-24 03:02:17,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:02:09" (2/3) ... [2018-07-24 03:02:17,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216f0779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:02:17, skipping insertion in model container [2018-07-24 03:02:17,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:02:17" (3/3) ... [2018-07-24 03:02:17,819 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-07-24 03:02:17,829 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 03:02:17,839 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 03:02:17,894 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 03:02:17,895 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 03:02:17,895 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 03:02:17,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 03:02:17,896 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 03:02:17,896 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 03:02:17,896 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 03:02:17,896 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 03:02:17,896 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 03:02:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-07-24 03:02:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-24 03:02:17,940 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:17,941 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:17,942 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:17,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-07-24 03:02:17,949 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:17,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:18,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:18,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:18,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:18,459 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-24 03:02:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:02:18,490 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:18,490 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:02:18,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:18,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:18,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:18,516 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-07-24 03:02:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:26,327 INFO L93 Difference]: Finished difference Result 1470 states and 2718 transitions. [2018-07-24 03:02:26,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:26,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-07-24 03:02:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:26,358 INFO L225 Difference]: With dead ends: 1470 [2018-07-24 03:02:26,358 INFO L226 Difference]: Without dead ends: 1038 [2018-07-24 03:02:26,364 INFO L573 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 [2018-07-24 03:02:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-07-24 03:02:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-07-24 03:02:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-07-24 03:02:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1670 transitions. [2018-07-24 03:02:26,465 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1670 transitions. Word has length 60 [2018-07-24 03:02:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:26,465 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1670 transitions. [2018-07-24 03:02:26,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1670 transitions. [2018-07-24 03:02:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-24 03:02:26,475 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:26,476 INFO L353 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, 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] [2018-07-24 03:02:26,476 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:26,477 INFO L82 PathProgramCache]: Analyzing trace with hash -407039555, now seen corresponding path program 1 times [2018-07-24 03:02:26,477 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:26,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:26,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:26,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:26,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:02:26,810 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:26,810 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:02:26,812 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:26,813 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:26,813 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:26,813 INFO L87 Difference]: Start difference. First operand 1036 states and 1670 transitions. Second operand 4 states. [2018-07-24 03:02:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:34,501 INFO L93 Difference]: Finished difference Result 3876 states and 6365 transitions. [2018-07-24 03:02:34,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:34,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-07-24 03:02:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:34,525 INFO L225 Difference]: With dead ends: 3876 [2018-07-24 03:02:34,525 INFO L226 Difference]: Without dead ends: 2842 [2018-07-24 03:02:34,532 INFO L573 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 [2018-07-24 03:02:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-07-24 03:02:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1937. [2018-07-24 03:02:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-07-24 03:02:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2688 transitions. [2018-07-24 03:02:34,590 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2688 transitions. Word has length 173 [2018-07-24 03:02:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:34,590 INFO L471 AbstractCegarLoop]: Abstraction has 1937 states and 2688 transitions. [2018-07-24 03:02:34,591 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2688 transitions. [2018-07-24 03:02:34,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-24 03:02:34,601 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:34,601 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:34,601 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash -441522345, now seen corresponding path program 1 times [2018-07-24 03:02:34,602 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:34,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:34,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:34,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:34,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 267 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-07-24 03:02:35,252 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:35,252 INFO L221 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 [2018-07-24 03:02:35,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:35,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-24 03:02:35,710 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:35,710 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-24 03:02:35,712 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:02:35,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:02:35,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:35,713 INFO L87 Difference]: Start difference. First operand 1937 states and 2688 transitions. Second operand 4 states. [2018-07-24 03:02:42,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:42,501 INFO L93 Difference]: Finished difference Result 6939 states and 9827 transitions. [2018-07-24 03:02:42,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:42,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2018-07-24 03:02:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:42,527 INFO L225 Difference]: With dead ends: 6939 [2018-07-24 03:02:42,527 INFO L226 Difference]: Without dead ends: 5004 [2018-07-24 03:02:42,532 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:02:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2018-07-24 03:02:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 2838. [2018-07-24 03:02:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2018-07-24 03:02:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3826 transitions. [2018-07-24 03:02:42,608 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3826 transitions. Word has length 305 [2018-07-24 03:02:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:42,609 INFO L471 AbstractCegarLoop]: Abstraction has 2838 states and 3826 transitions. [2018-07-24 03:02:42,609 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:02:42,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3826 transitions. [2018-07-24 03:02:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-24 03:02:42,615 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:42,616 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:42,616 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1395770003, now seen corresponding path program 1 times [2018-07-24 03:02:42,616 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:42,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:42,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:42,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:42,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-24 03:02:43,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:02:43,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:02:43,397 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:02:43,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:02:43,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:43,398 INFO L87 Difference]: Start difference. First operand 2838 states and 3826 transitions. Second operand 5 states. [2018-07-24 03:02:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:02:48,364 INFO L93 Difference]: Finished difference Result 6876 states and 8972 transitions. [2018-07-24 03:02:48,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:02:48,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2018-07-24 03:02:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:02:48,384 INFO L225 Difference]: With dead ends: 6876 [2018-07-24 03:02:48,384 INFO L226 Difference]: Without dead ends: 4040 [2018-07-24 03:02:48,388 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:02:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2018-07-24 03:02:48,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3739. [2018-07-24 03:02:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2018-07-24 03:02:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 4787 transitions. [2018-07-24 03:02:48,454 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 4787 transitions. Word has length 334 [2018-07-24 03:02:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:02:48,455 INFO L471 AbstractCegarLoop]: Abstraction has 3739 states and 4787 transitions. [2018-07-24 03:02:48,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 03:02:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 4787 transitions. [2018-07-24 03:02:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-24 03:02:48,463 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:02:48,464 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:02:48,464 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:02:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 834978299, now seen corresponding path program 1 times [2018-07-24 03:02:48,465 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:02:48,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:02:48,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:48,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:48,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:02:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:49,039 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 03:02:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 118 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:02:49,759 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:02:49,759 INFO L221 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 [2018-07-24 03:02:49,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:02:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:02:49,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:02:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 03:02:50,170 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 03:02:50,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-07-24 03:02:50,172 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 03:02:50,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 03:02:50,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 03:02:50,173 INFO L87 Difference]: Start difference. First operand 3739 states and 4787 transitions. Second operand 11 states. [2018-07-24 03:03:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:07,106 INFO L93 Difference]: Finished difference Result 10259 states and 13561 transitions. [2018-07-24 03:03:07,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 03:03:07,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 408 [2018-07-24 03:03:07,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:07,140 INFO L225 Difference]: With dead ends: 10259 [2018-07-24 03:03:07,140 INFO L226 Difference]: Without dead ends: 6522 [2018-07-24 03:03:07,146 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 412 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2018-07-24 03:03:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2018-07-24 03:03:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 6147. [2018-07-24 03:03:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6147 states. [2018-07-24 03:03:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7625 transitions. [2018-07-24 03:03:07,256 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7625 transitions. Word has length 408 [2018-07-24 03:03:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:07,257 INFO L471 AbstractCegarLoop]: Abstraction has 6147 states and 7625 transitions. [2018-07-24 03:03:07,257 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 03:03:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7625 transitions. [2018-07-24 03:03:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-07-24 03:03:07,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:07,279 INFO L353 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:03:07,279 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1280463180, now seen corresponding path program 1 times [2018-07-24 03:03:07,279 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:07,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:07,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:07,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:07,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-07-24 03:03:08,013 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:03:08,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:03:08,014 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:03:08,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:03:08,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:03:08,015 INFO L87 Difference]: Start difference. First operand 6147 states and 7625 transitions. Second operand 4 states. [2018-07-24 03:03:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:13,137 INFO L93 Difference]: Finished difference Result 18297 states and 22663 transitions. [2018-07-24 03:03:13,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:03:13,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 590 [2018-07-24 03:03:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:13,182 INFO L225 Difference]: With dead ends: 18297 [2018-07-24 03:03:13,182 INFO L226 Difference]: Without dead ends: 12152 [2018-07-24 03:03:13,192 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:03:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12152 states. [2018-07-24 03:03:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12152 to 10046. [2018-07-24 03:03:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10046 states. [2018-07-24 03:03:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10046 states to 10046 states and 12205 transitions. [2018-07-24 03:03:13,382 INFO L78 Accepts]: Start accepts. Automaton has 10046 states and 12205 transitions. Word has length 590 [2018-07-24 03:03:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:13,383 INFO L471 AbstractCegarLoop]: Abstraction has 10046 states and 12205 transitions. [2018-07-24 03:03:13,383 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:03:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 10046 states and 12205 transitions. [2018-07-24 03:03:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-07-24 03:03:13,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:13,405 INFO L353 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:03:13,406 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:13,406 INFO L82 PathProgramCache]: Analyzing trace with hash 366757803, now seen corresponding path program 1 times [2018-07-24 03:03:13,406 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:13,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:13,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:13,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:13,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2018-07-24 03:03:13,945 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:03:13,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 03:03:13,949 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 03:03:13,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 03:03:13,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 03:03:13,950 INFO L87 Difference]: Start difference. First operand 10046 states and 12205 transitions. Second operand 3 states. [2018-07-24 03:03:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:18,531 INFO L93 Difference]: Finished difference Result 20388 states and 24784 transitions. [2018-07-24 03:03:18,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 03:03:18,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 715 [2018-07-24 03:03:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:18,551 INFO L225 Difference]: With dead ends: 20388 [2018-07-24 03:03:18,552 INFO L226 Difference]: Without dead ends: 10344 [2018-07-24 03:03:18,559 INFO L573 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 [2018-07-24 03:03:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10344 states. [2018-07-24 03:03:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10344 to 10044. [2018-07-24 03:03:18,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10044 states. [2018-07-24 03:03:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10044 states to 10044 states and 12201 transitions. [2018-07-24 03:03:18,696 INFO L78 Accepts]: Start accepts. Automaton has 10044 states and 12201 transitions. Word has length 715 [2018-07-24 03:03:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:18,698 INFO L471 AbstractCegarLoop]: Abstraction has 10044 states and 12201 transitions. [2018-07-24 03:03:18,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 03:03:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 10044 states and 12201 transitions. [2018-07-24 03:03:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-07-24 03:03:18,718 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:18,718 INFO L353 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, 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:03:18,719 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash -111284377, now seen corresponding path program 1 times [2018-07-24 03:03:18,719 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:18,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:18,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:19,121 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 03:03:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 865 proven. 4 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-07-24 03:03:20,165 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:20,165 INFO L221 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 [2018-07-24 03:03:20,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:20,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 830 proven. 39 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-07-24 03:03:21,166 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:03:21,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-24 03:03:21,168 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:03:21,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:03:21,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:03:21,168 INFO L87 Difference]: Start difference. First operand 10044 states and 12201 transitions. Second operand 9 states. [2018-07-24 03:03:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:32,942 INFO L93 Difference]: Finished difference Result 27456 states and 32799 transitions. [2018-07-24 03:03:32,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 03:03:32,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 743 [2018-07-24 03:03:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:32,959 INFO L225 Difference]: With dead ends: 27456 [2018-07-24 03:03:32,959 INFO L226 Difference]: Without dead ends: 9082 [2018-07-24 03:03:32,975 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 740 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2018-07-24 03:03:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2018-07-24 03:03:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 7882. [2018-07-24 03:03:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7882 states. [2018-07-24 03:03:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 8504 transitions. [2018-07-24 03:03:33,091 INFO L78 Accepts]: Start accepts. Automaton has 7882 states and 8504 transitions. Word has length 743 [2018-07-24 03:03:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:33,092 INFO L471 AbstractCegarLoop]: Abstraction has 7882 states and 8504 transitions. [2018-07-24 03:03:33,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 03:03:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7882 states and 8504 transitions. [2018-07-24 03:03:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2018-07-24 03:03:33,107 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:33,108 INFO L353 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:03:33,108 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash -170606789, now seen corresponding path program 1 times [2018-07-24 03:03:33,108 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:33,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:33,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:33,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 58 proven. 555 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 03:03:35,223 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:35,223 INFO L221 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 [2018-07-24 03:03:35,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:35,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:37,059 WARN L1032 $PredicateComparison]: unable to prove that (or (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0_825 Int)) (let ((.cse0 (mod v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0_825 299926))) (and (not (= 0 .cse0)) (<= .cse0 (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0 599998)) (<= (+ v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0_825 44) 0) (< v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0_825 0)))) (exists ((v_prenex_1 Int)) (and (<= (mod v_prenex_1 299926) (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0 300072)) (<= (+ v_prenex_1 44) 0) (<= 0 v_prenex_1))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 299926))) (and (= 0 .cse1) (<= (+ v_prenex_2 44) 0) (<= .cse1 (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a0~0 300072)))))) is different from true [2018-07-24 03:03:37,719 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 26 [2018-07-24 03:03:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 173 refuted. 0 times theorem prover too weak. 350 trivial. 440 not checked. [2018-07-24 03:03:39,935 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:03:39,935 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-07-24 03:03:39,937 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 03:03:39,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 03:03:39,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=35, Unknown=1, NotChecked=12, Total=72 [2018-07-24 03:03:39,937 INFO L87 Difference]: Start difference. First operand 7882 states and 8504 transitions. Second operand 9 states. [2018-07-24 03:03:52,688 WARN L169 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 38 DAG size of output: 19 [2018-07-24 03:03:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:03:53,065 INFO L93 Difference]: Finished difference Result 24949 states and 26669 transitions. [2018-07-24 03:03:53,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 03:03:53,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 755 [2018-07-24 03:03:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:03:53,087 INFO L225 Difference]: With dead ends: 24949 [2018-07-24 03:03:53,088 INFO L226 Difference]: Without dead ends: 17069 [2018-07-24 03:03:53,098 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 752 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=42, Invalid=70, Unknown=2, NotChecked=18, Total=132 [2018-07-24 03:03:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17069 states. [2018-07-24 03:03:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17069 to 14057. [2018-07-24 03:03:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-07-24 03:03:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 15008 transitions. [2018-07-24 03:03:53,306 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 15008 transitions. Word has length 755 [2018-07-24 03:03:53,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:03:53,307 INFO L471 AbstractCegarLoop]: Abstraction has 14057 states and 15008 transitions. [2018-07-24 03:03:53,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 03:03:53,307 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 15008 transitions. [2018-07-24 03:03:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-07-24 03:03:53,326 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:03:53,327 INFO L353 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:03:53,328 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:03:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1223067402, now seen corresponding path program 1 times [2018-07-24 03:03:53,328 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:03:53,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:03:53,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:53,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:53,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:03:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 636 proven. 53 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 03:03:54,250 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:03:54,250 INFO L221 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 [2018-07-24 03:03:54,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:03:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:03:54,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:03:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 765 proven. 77 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-07-24 03:03:56,286 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:03:56,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-07-24 03:03:56,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:03:56,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:03:56,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:03:56,288 INFO L87 Difference]: Start difference. First operand 14057 states and 15008 transitions. Second operand 7 states. [2018-07-24 03:04:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:04:05,327 INFO L93 Difference]: Finished difference Result 44958 states and 48395 transitions. [2018-07-24 03:04:05,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 03:04:05,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2018-07-24 03:04:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:04:05,361 INFO L225 Difference]: With dead ends: 44958 [2018-07-24 03:04:05,361 INFO L226 Difference]: Without dead ends: 30903 [2018-07-24 03:04:05,374 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-07-24 03:04:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30903 states. [2018-07-24 03:04:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30903 to 29060. [2018-07-24 03:04:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29060 states. [2018-07-24 03:04:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29060 states to 29060 states and 30653 transitions. [2018-07-24 03:04:05,775 INFO L78 Accepts]: Start accepts. Automaton has 29060 states and 30653 transitions. Word has length 790 [2018-07-24 03:04:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:04:05,776 INFO L471 AbstractCegarLoop]: Abstraction has 29060 states and 30653 transitions. [2018-07-24 03:04:05,776 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:04:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 29060 states and 30653 transitions. [2018-07-24 03:04:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2018-07-24 03:04:05,810 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:04:05,811 INFO L353 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:04:05,811 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:04:05,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1546123245, now seen corresponding path program 1 times [2018-07-24 03:04:05,811 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:04:05,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:04:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:05,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-07-24 03:04:06,613 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:04:06,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:04:06,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:04:06,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:04:06,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:04:06,615 INFO L87 Difference]: Start difference. First operand 29060 states and 30653 transitions. Second operand 4 states. [2018-07-24 03:04:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:04:08,974 INFO L93 Difference]: Finished difference Result 57824 states and 61013 transitions. [2018-07-24 03:04:08,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:04:08,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 801 [2018-07-24 03:04:08,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:04:09,005 INFO L225 Difference]: With dead ends: 57824 [2018-07-24 03:04:09,006 INFO L226 Difference]: Without dead ends: 29066 [2018-07-24 03:04:09,023 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:04:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29066 states. [2018-07-24 03:04:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29066 to 28453. [2018-07-24 03:04:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28453 states. [2018-07-24 03:04:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28453 states to 28453 states and 29698 transitions. [2018-07-24 03:04:09,398 INFO L78 Accepts]: Start accepts. Automaton has 28453 states and 29698 transitions. Word has length 801 [2018-07-24 03:04:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:04:09,399 INFO L471 AbstractCegarLoop]: Abstraction has 28453 states and 29698 transitions. [2018-07-24 03:04:09,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:04:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 28453 states and 29698 transitions. [2018-07-24 03:04:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-07-24 03:04:09,418 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:04:09,419 INFO L353 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 03:04:09,419 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:04:09,420 INFO L82 PathProgramCache]: Analyzing trace with hash 360317674, now seen corresponding path program 1 times [2018-07-24 03:04:09,420 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:04:09,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:04:09,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:09,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:09,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:04:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:10,235 WARN L169 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-07-24 03:04:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 643 proven. 58 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-07-24 03:04:10,906 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:04:10,906 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:04:10,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:04:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:04:11,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:04:11,626 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 400 DAG size of output: 27 [2018-07-24 03:04:12,125 WARN L169 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 36 [2018-07-24 03:04:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 643 proven. 58 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-07-24 03:04:15,558 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:04:15,558 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2018-07-24 03:04:15,560 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 03:04:15,560 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 03:04:15,560 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-07-24 03:04:15,562 INFO L87 Difference]: Start difference. First operand 28453 states and 29698 transitions. Second operand 10 states. [2018-07-24 03:05:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:05:48,965 INFO L93 Difference]: Finished difference Result 66874 states and 70162 transitions. [2018-07-24 03:05:48,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-24 03:05:48,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 802 [2018-07-24 03:05:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:05:49,007 INFO L225 Difference]: With dead ends: 66874 [2018-07-24 03:05:49,007 INFO L226 Difference]: Without dead ends: 38423 [2018-07-24 03:05:49,027 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 812 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2018-07-24 03:05:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38423 states. [2018-07-24 03:05:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38423 to 30561. [2018-07-24 03:05:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30561 states. [2018-07-24 03:05:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30561 states to 30561 states and 31693 transitions. [2018-07-24 03:05:49,465 INFO L78 Accepts]: Start accepts. Automaton has 30561 states and 31693 transitions. Word has length 802 [2018-07-24 03:05:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:05:49,466 INFO L471 AbstractCegarLoop]: Abstraction has 30561 states and 31693 transitions. [2018-07-24 03:05:49,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 03:05:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 30561 states and 31693 transitions. [2018-07-24 03:05:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2018-07-24 03:05:49,483 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:05:49,484 INFO L353 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, 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, 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, 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] [2018-07-24 03:05:49,484 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:05:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1851581012, now seen corresponding path program 1 times [2018-07-24 03:05:49,484 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:05:49,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:05:49,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:49,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:49,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 952 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-24 03:05:50,918 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:05:50,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 03:05:50,918 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 03:05:50,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 03:05:50,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:05:50,919 INFO L87 Difference]: Start difference. First operand 30561 states and 31693 transitions. Second operand 4 states. [2018-07-24 03:05:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:05:53,814 INFO L93 Difference]: Finished difference Result 35672 states and 36933 transitions. [2018-07-24 03:05:53,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:05:53,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 846 [2018-07-24 03:05:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:05:53,848 INFO L225 Difference]: With dead ends: 35672 [2018-07-24 03:05:53,848 INFO L226 Difference]: Without dead ends: 35670 [2018-07-24 03:05:53,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 03:05:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35670 states. [2018-07-24 03:05:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35670 to 19591. [2018-07-24 03:05:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19591 states. [2018-07-24 03:05:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19591 states to 19591 states and 20392 transitions. [2018-07-24 03:05:54,125 INFO L78 Accepts]: Start accepts. Automaton has 19591 states and 20392 transitions. Word has length 846 [2018-07-24 03:05:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:05:54,126 INFO L471 AbstractCegarLoop]: Abstraction has 19591 states and 20392 transitions. [2018-07-24 03:05:54,126 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 03:05:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19591 states and 20392 transitions. [2018-07-24 03:05:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-07-24 03:05:54,148 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:05:54,149 INFO L353 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 03:05:54,149 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:05:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1122946071, now seen corresponding path program 1 times [2018-07-24 03:05:54,150 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:05:54,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:05:54,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:54,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:54,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:05:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1779 backedges. 116 proven. 879 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2018-07-24 03:05:57,243 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 03:05:57,243 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 03:05:57,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:05:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:05:57,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 03:05:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1779 backedges. 116 proven. 879 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2018-07-24 03:05:58,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 03:05:58,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-07-24 03:05:58,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 03:05:58,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 03:05:58,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 03:05:58,977 INFO L87 Difference]: Start difference. First operand 19591 states and 20392 transitions. Second operand 7 states. [2018-07-24 03:06:04,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 03:06:04,237 INFO L93 Difference]: Finished difference Result 31918 states and 33061 transitions. [2018-07-24 03:06:04,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 03:06:04,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2018-07-24 03:06:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 03:06:04,266 INFO L225 Difference]: With dead ends: 31918 [2018-07-24 03:06:04,266 INFO L226 Difference]: Without dead ends: 31916 [2018-07-24 03:06:04,275 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1055 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-07-24 03:06:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31916 states. [2018-07-24 03:06:04,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31916 to 21993. [2018-07-24 03:06:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21993 states. [2018-07-24 03:06:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21993 states to 21993 states and 22841 transitions. [2018-07-24 03:06:04,541 INFO L78 Accepts]: Start accepts. Automaton has 21993 states and 22841 transitions. Word has length 1058 [2018-07-24 03:06:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 03:06:04,541 INFO L471 AbstractCegarLoop]: Abstraction has 21993 states and 22841 transitions. [2018-07-24 03:06:04,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 03:06:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 21993 states and 22841 transitions. [2018-07-24 03:06:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2018-07-24 03:06:04,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 03:06:04,569 INFO L353 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, 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, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 03:06:04,569 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 03:06:04,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1403323550, now seen corresponding path program 1 times [2018-07-24 03:06:04,570 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 03:06:04,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 03:06:04,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:06:04,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 03:06:04,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 03:06:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 03:06:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2999 backedges. 2167 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2018-07-24 03:06:06,133 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 03:06:06,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 03:06:06,134 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 03:06:06,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 03:06:06,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 03:06:06,135 INFO L87 Difference]: Start difference. First operand 21993 states and 22841 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 03:06:07,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 03:06:07,118 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 03:06:07,125 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 03:06:07,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:06:07 BoogieIcfgContainer [2018-07-24 03:06:07,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 03:06:07,127 INFO L168 Benchmark]: Toolchain (without parser) took 238809.64 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 803.9 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,128 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 03:06:07,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1396.06 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 297.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,130 INFO L168 Benchmark]: Boogie Preprocessor took 717.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 882.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,131 INFO L168 Benchmark]: RCFGBuilder took 7075.07 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 323.8 MB). Peak memory consumption was 323.8 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,132 INFO L168 Benchmark]: TraceAbstraction took 229315.29 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 453.6 MB. Max. memory is 7.1 GB. [2018-07-24 03:06:07,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1396.06 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 297.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 717.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 882.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7075.07 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 323.8 MB). Peak memory consumption was 323.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229315.29 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 453.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (21993states) and interpolant automaton (currently 4 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (2019 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 229.2s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 193.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3307 SDtfs, 23631 SDslu, 2719 SDs, 0 SdLazy, 52975 SolverSat, 7218 SolverUnsat, 32 SolverUnknown, 0 SolverNotchecked, 169.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4995 GetRequests, 4885 SyntacticMatches, 17 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30561occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 46687 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 14453 NumberOfCodeBlocks, 14453 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 14431 ConstructedInterpolants, 652 QuantifiedInterpolants, 66192517 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5718 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 17629/20921 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label12_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-06-07-149.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label12_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_03-06-07-149.csv Completed graceful shutdown