java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 14:17:25,204 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 14:17:25,206 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 14:17:25,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 14:17:25,218 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 14:17:25,219 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 14:17:25,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 14:17:25,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 14:17:25,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 14:17:25,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 14:17:25,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 14:17:25,226 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 14:17:25,227 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 14:17:25,228 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 14:17:25,229 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 14:17:25,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 14:17:25,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 14:17:25,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 14:17:25,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 14:17:25,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 14:17:25,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 14:17:25,242 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 14:17:25,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 14:17:25,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 14:17:25,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 14:17:25,257 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 14:17:25,258 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 14:17:25,258 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 14:17:25,259 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 14:17:25,260 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 14:17:25,260 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 14:17:25,261 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-22 14:17:25,264 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 14:17:25,292 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 14:17:25,292 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 14:17:25,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 14:17:25,293 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 14:17:25,294 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 14:17:25,294 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 14:17:25,294 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 14:17:25,294 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 14:17:25,297 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 14:17:25,297 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 14:17:25,298 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 14:17:25,298 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 14:17:25,298 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 14:17:25,298 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 14:17:25,298 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 14:17:25,299 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 14:17:25,299 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 14:17:25,299 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 14:17:25,299 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 14:17:25,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 14:17:25,300 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 14:17:25,300 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 14:17:25,300 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 14:17:25,300 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 14:17:25,300 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 14:17:25,300 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 14:17:25,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 14:17:25,302 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 14:17:25,302 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 14:17:25,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 14:17:25,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 14:17:25,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 14:17:25,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 14:17:25,381 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 14:17:25,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-07-22 14:17:25,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/249169127/cddf2bdbfa8d425eba2033399909d1f1/FLAG213b748c9 [2018-07-22 14:17:26,217 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 14:17:26,217 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-07-22 14:17:26,262 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/249169127/cddf2bdbfa8d425eba2033399909d1f1/FLAG213b748c9 [2018-07-22 14:17:26,281 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/249169127/cddf2bdbfa8d425eba2033399909d1f1 [2018-07-22 14:17:26,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 14:17:26,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 14:17:26,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 14:17:26,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 14:17:26,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 14:17:26,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:17:26" (1/1) ... [2018-07-22 14:17:26,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:26, skipping insertion in model container [2018-07-22 14:17:26,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:17:26" (1/1) ... [2018-07-22 14:17:26,626 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 14:17:27,549 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 14:17:27,568 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 14:17:28,075 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 14:17:28,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28 WrapperNode [2018-07-22 14:17:28,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 14:17:28,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 14:17:28,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 14:17:28,283 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 14:17:28,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 14:17:28,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 14:17:28,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 14:17:28,721 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 14:17:28,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:28,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:29,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:29,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... [2018-07-22 14:17:29,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 14:17:29,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 14:17:29,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 14:17:29,845 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 14:17:29,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (1/1) ... No working directory specified, using /storage/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 [2018-07-22 14:17:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 14:17:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 14:17:29,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 14:17:43,940 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 14:17:43,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:17:43 BoogieIcfgContainer [2018-07-22 14:17:43,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 14:17:43,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 14:17:43,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 14:17:43,944 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 14:17:43,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:17:26" (1/3) ... [2018-07-22 14:17:43,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625a572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:17:43, skipping insertion in model container [2018-07-22 14:17:43,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:17:28" (2/3) ... [2018-07-22 14:17:43,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3625a572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:17:43, skipping insertion in model container [2018-07-22 14:17:43,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:17:43" (3/3) ... [2018-07-22 14:17:43,949 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21_true-unreach-call.c [2018-07-22 14:17:43,958 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 14:17:43,966 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 14:17:44,032 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 14:17:44,033 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 14:17:44,033 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 14:17:44,033 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 14:17:44,033 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 14:17:44,033 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 14:17:44,033 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 14:17:44,033 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 14:17:44,033 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 14:17:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-22 14:17:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-07-22 14:17:44,085 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:17:44,086 INFO L358 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] [2018-07-22 14:17:44,086 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:17:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-07-22 14:17:44,092 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:17:44,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:17:44,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:17:44,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:17:44,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:17:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:17:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 14:17:44,514 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:17:44,514 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 14:17:44,517 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 14:17:44,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 14:17:44,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:17:44,534 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-22 14:17:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:17:54,620 INFO L93 Difference]: Finished difference Result 2126 states and 3956 transitions. [2018-07-22 14:17:54,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 14:17:54,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-07-22 14:17:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:17:54,653 INFO L225 Difference]: With dead ends: 2126 [2018-07-22 14:17:54,654 INFO L226 Difference]: Without dead ends: 1528 [2018-07-22 14:17:54,661 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:17:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2018-07-22 14:17:54,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1048. [2018-07-22 14:17:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2018-07-22 14:17:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1826 transitions. [2018-07-22 14:17:54,780 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1826 transitions. Word has length 60 [2018-07-22 14:17:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:17:54,781 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1826 transitions. [2018-07-22 14:17:54,781 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 14:17:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1826 transitions. [2018-07-22 14:17:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-22 14:17:54,788 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:17:54,788 INFO L358 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] [2018-07-22 14:17:54,788 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:17:54,789 INFO L82 PathProgramCache]: Analyzing trace with hash 909948784, now seen corresponding path program 1 times [2018-07-22 14:17:54,789 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:17:54,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:17:54,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:17:54,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:17:54,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:17:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:17:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 14:17:55,210 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:17:55,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 14:17:55,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 14:17:55,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 14:17:55,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:17:55,213 INFO L87 Difference]: Start difference. First operand 1048 states and 1826 transitions. Second operand 4 states. [2018-07-22 14:18:07,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:07,851 INFO L93 Difference]: Finished difference Result 3810 states and 6822 transitions. [2018-07-22 14:18:07,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 14:18:07,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-07-22 14:18:07,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:07,867 INFO L225 Difference]: With dead ends: 3810 [2018-07-22 14:18:07,868 INFO L226 Difference]: Without dead ends: 2764 [2018-07-22 14:18:07,871 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-07-22 14:18:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2018-07-22 14:18:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2018-07-22 14:18:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4043 transitions. [2018-07-22 14:18:07,974 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4043 transitions. Word has length 132 [2018-07-22 14:18:07,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:07,975 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 4043 transitions. [2018-07-22 14:18:07,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 14:18:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4043 transitions. [2018-07-22 14:18:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-22 14:18:07,988 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:07,988 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:18:07,988 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash -395607040, now seen corresponding path program 1 times [2018-07-22 14:18:07,989 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:07,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:07,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:07,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:07,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-22 14:18:08,459 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:18:08,460 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 14:18:08,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 14:18:08,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 14:18:08,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 14:18:08,461 INFO L87 Difference]: Start difference. First operand 2764 states and 4043 transitions. Second operand 3 states. [2018-07-22 14:18:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:11,628 INFO L93 Difference]: Finished difference Result 8084 states and 11875 transitions. [2018-07-22 14:18:11,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 14:18:11,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-07-22 14:18:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:11,688 INFO L225 Difference]: With dead ends: 8084 [2018-07-22 14:18:11,689 INFO L226 Difference]: Without dead ends: 5322 [2018-07-22 14:18:11,693 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 14:18:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2018-07-22 14:18:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5318. [2018-07-22 14:18:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5318 states. [2018-07-22 14:18:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 7187 transitions. [2018-07-22 14:18:11,822 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 7187 transitions. Word has length 216 [2018-07-22 14:18:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:11,823 INFO L471 AbstractCegarLoop]: Abstraction has 5318 states and 7187 transitions. [2018-07-22 14:18:11,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 14:18:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 7187 transitions. [2018-07-22 14:18:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-22 14:18:11,828 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:11,828 INFO L358 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] [2018-07-22 14:18:11,828 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:11,829 INFO L82 PathProgramCache]: Analyzing trace with hash -379173842, now seen corresponding path program 1 times [2018-07-22 14:18:11,829 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:11,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:11,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:11,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:11,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 14:18:12,224 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:18:12,224 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 14:18:12,225 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 14:18:12,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 14:18:12,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:12,225 INFO L87 Difference]: Start difference. First operand 5318 states and 7187 transitions. Second operand 4 states. [2018-07-22 14:18:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:15,645 INFO L93 Difference]: Finished difference Result 11486 states and 15622 transitions. [2018-07-22 14:18:15,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 14:18:15,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2018-07-22 14:18:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:15,664 INFO L225 Difference]: With dead ends: 11486 [2018-07-22 14:18:15,664 INFO L226 Difference]: Without dead ends: 6170 [2018-07-22 14:18:15,672 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2018-07-22 14:18:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6170. [2018-07-22 14:18:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6170 states. [2018-07-22 14:18:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6170 states to 6170 states and 7586 transitions. [2018-07-22 14:18:15,873 INFO L78 Accepts]: Start accepts. Automaton has 6170 states and 7586 transitions. Word has length 223 [2018-07-22 14:18:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:15,873 INFO L471 AbstractCegarLoop]: Abstraction has 6170 states and 7586 transitions. [2018-07-22 14:18:15,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 14:18:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6170 states and 7586 transitions. [2018-07-22 14:18:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-22 14:18:15,881 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:15,881 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:18:15,881 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:15,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1238652954, now seen corresponding path program 1 times [2018-07-22 14:18:15,882 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:15,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:15,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:15,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:15,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-22 14:18:16,335 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:18:16,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 14:18:16,336 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 14:18:16,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 14:18:16,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:16,337 INFO L87 Difference]: Start difference. First operand 6170 states and 7586 transitions. Second operand 4 states. [2018-07-22 14:18:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:24,959 INFO L93 Difference]: Finished difference Result 16208 states and 19981 transitions. [2018-07-22 14:18:24,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 14:18:24,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2018-07-22 14:18:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:24,998 INFO L225 Difference]: With dead ends: 16208 [2018-07-22 14:18:24,998 INFO L226 Difference]: Without dead ends: 10040 [2018-07-22 14:18:25,005 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2018-07-22 14:18:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 8735. [2018-07-22 14:18:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8735 states. [2018-07-22 14:18:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8735 states to 8735 states and 10490 transitions. [2018-07-22 14:18:25,166 INFO L78 Accepts]: Start accepts. Automaton has 8735 states and 10490 transitions. Word has length 282 [2018-07-22 14:18:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:25,167 INFO L471 AbstractCegarLoop]: Abstraction has 8735 states and 10490 transitions. [2018-07-22 14:18:25,167 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 14:18:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8735 states and 10490 transitions. [2018-07-22 14:18:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-22 14:18:25,175 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:25,175 INFO L358 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:18:25,176 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1354336113, now seen corresponding path program 1 times [2018-07-22 14:18:25,176 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:25,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:25,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:25,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:25,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 256 proven. 71 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-22 14:18:25,602 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 14:18:25,602 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 14:18:25,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:25,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 14:18:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 256 proven. 71 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-22 14:18:26,034 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 14:18:26,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-07-22 14:18:26,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 14:18:26,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 14:18:26,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 14:18:26,036 INFO L87 Difference]: Start difference. First operand 8735 states and 10490 transitions. Second operand 5 states. [2018-07-22 14:18:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:35,606 INFO L93 Difference]: Finished difference Result 29860 states and 36119 transitions. [2018-07-22 14:18:35,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 14:18:35,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2018-07-22 14:18:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:35,652 INFO L225 Difference]: With dead ends: 29860 [2018-07-22 14:18:35,652 INFO L226 Difference]: Without dead ends: 17646 [2018-07-22 14:18:35,665 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 14:18:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17646 states. [2018-07-22 14:18:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17646 to 15936. [2018-07-22 14:18:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15936 states. [2018-07-22 14:18:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15936 states to 15936 states and 17809 transitions. [2018-07-22 14:18:35,982 INFO L78 Accepts]: Start accepts. Automaton has 15936 states and 17809 transitions. Word has length 287 [2018-07-22 14:18:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:35,983 INFO L471 AbstractCegarLoop]: Abstraction has 15936 states and 17809 transitions. [2018-07-22 14:18:35,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 14:18:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15936 states and 17809 transitions. [2018-07-22 14:18:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-22 14:18:35,990 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:35,990 INFO L358 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, 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] [2018-07-22 14:18:35,990 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash 202729160, now seen corresponding path program 1 times [2018-07-22 14:18:35,991 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:35,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:35,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:35,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:35,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-07-22 14:18:36,358 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:18:36,359 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 14:18:36,360 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 14:18:36,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 14:18:36,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:36,360 INFO L87 Difference]: Start difference. First operand 15936 states and 17809 transitions. Second operand 4 states. [2018-07-22 14:18:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:42,409 INFO L93 Difference]: Finished difference Result 42538 states and 47506 transitions. [2018-07-22 14:18:42,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 14:18:42,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2018-07-22 14:18:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:42,465 INFO L225 Difference]: With dead ends: 42538 [2018-07-22 14:18:42,466 INFO L226 Difference]: Without dead ends: 26176 [2018-07-22 14:18:42,483 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 14:18:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26176 states. [2018-07-22 14:18:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26176 to 15497. [2018-07-22 14:18:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15497 states. [2018-07-22 14:18:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15497 states to 15497 states and 17232 transitions. [2018-07-22 14:18:42,733 INFO L78 Accepts]: Start accepts. Automaton has 15497 states and 17232 transitions. Word has length 323 [2018-07-22 14:18:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:42,741 INFO L471 AbstractCegarLoop]: Abstraction has 15497 states and 17232 transitions. [2018-07-22 14:18:42,741 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 14:18:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 15497 states and 17232 transitions. [2018-07-22 14:18:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-22 14:18:42,756 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:42,757 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:18:42,757 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:42,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1196826099, now seen corresponding path program 1 times [2018-07-22 14:18:42,758 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:42,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:42,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:42,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:42,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-22 14:18:43,265 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 14:18:43,266 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 14:18:43,266 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 14:18:43,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 14:18:43,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 14:18:43,267 INFO L87 Difference]: Start difference. First operand 15497 states and 17232 transitions. Second operand 3 states. [2018-07-22 14:18:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:18:47,248 INFO L93 Difference]: Finished difference Result 42494 states and 47173 transitions. [2018-07-22 14:18:47,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 14:18:47,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 443 [2018-07-22 14:18:47,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:18:47,336 INFO L225 Difference]: With dead ends: 42494 [2018-07-22 14:18:47,336 INFO L226 Difference]: Without dead ends: 26566 [2018-07-22 14:18:47,353 INFO L578 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 [2018-07-22 14:18:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26566 states. [2018-07-22 14:18:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26566 to 26136. [2018-07-22 14:18:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26136 states. [2018-07-22 14:18:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26136 states to 26136 states and 28445 transitions. [2018-07-22 14:18:47,749 INFO L78 Accepts]: Start accepts. Automaton has 26136 states and 28445 transitions. Word has length 443 [2018-07-22 14:18:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:18:47,750 INFO L471 AbstractCegarLoop]: Abstraction has 26136 states and 28445 transitions. [2018-07-22 14:18:47,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 14:18:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 26136 states and 28445 transitions. [2018-07-22 14:18:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-07-22 14:18:47,771 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:18:47,771 INFO L358 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:18:47,771 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:18:47,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1798422496, now seen corresponding path program 1 times [2018-07-22 14:18:47,772 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:18:47,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:18:47,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:47,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:47,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:18:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 519 proven. 458 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-22 14:18:48,573 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 14:18:48,573 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 14:18:48,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:18:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:18:48,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 14:18:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2018-07-22 14:18:49,232 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 14:18:49,232 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-07-22 14:18:49,233 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 14:18:49,233 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 14:18:49,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-22 14:18:49,234 INFO L87 Difference]: Start difference. First operand 26136 states and 28445 transitions. Second operand 9 states. [2018-07-22 14:19:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:19:35,464 INFO L93 Difference]: Finished difference Result 106931 states and 117217 transitions. [2018-07-22 14:19:35,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-22 14:19:35,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 469 [2018-07-22 14:19:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:19:35,537 INFO L225 Difference]: With dead ends: 106931 [2018-07-22 14:19:35,537 INFO L226 Difference]: Without dead ends: 74819 [2018-07-22 14:19:35,565 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-07-22 14:19:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74819 states. [2018-07-22 14:19:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74819 to 63226. [2018-07-22 14:19:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63226 states. [2018-07-22 14:19:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63226 states to 63226 states and 67147 transitions. [2018-07-22 14:19:36,456 INFO L78 Accepts]: Start accepts. Automaton has 63226 states and 67147 transitions. Word has length 469 [2018-07-22 14:19:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:19:36,457 INFO L471 AbstractCegarLoop]: Abstraction has 63226 states and 67147 transitions. [2018-07-22 14:19:36,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 14:19:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 63226 states and 67147 transitions. [2018-07-22 14:19:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-07-22 14:19:36,489 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:19:36,490 INFO L358 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:19:36,490 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:19:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1738326776, now seen corresponding path program 1 times [2018-07-22 14:19:36,490 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:19:36,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:19:36,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:19:36,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:19:36,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:19:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:19:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 231 proven. 509 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-22 14:19:38,084 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 14:19:38,084 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 14:19:38,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:19:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:19:38,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 14:19:39,359 WARN L169 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 22 [2018-07-22 14:19:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-07-22 14:19:39,916 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 14:19:39,916 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-07-22 14:19:39,917 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 14:19:39,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 14:19:39,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-22 14:19:39,917 INFO L87 Difference]: Start difference. First operand 63226 states and 67147 transitions. Second operand 9 states. Received shutdown request... [2018-07-22 14:21:40,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-22 14:21:40,054 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 14:21:40,060 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 14:21:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:21:40 BoogieIcfgContainer [2018-07-22 14:21:40,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 14:21:40,061 INFO L168 Benchmark]: Toolchain (without parser) took 253769.73 ms. Allocated memory was 308.8 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 246.3 MB in the beginning and 449.0 MB in the end (delta: -202.8 MB). Peak memory consumption was 893.5 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,062 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 14:21:40,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1980.03 ms. Allocated memory was 308.8 MB in the beginning and 337.1 MB in the end (delta: 28.3 MB). Free memory was 245.3 MB in the beginning and 172.3 MB in the end (delta: 72.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 437.26 ms. Allocated memory was 337.1 MB in the beginning and 400.6 MB in the end (delta: 63.4 MB). Free memory was 172.3 MB in the beginning and 271.2 MB in the end (delta: -98.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,064 INFO L168 Benchmark]: Boogie Preprocessor took 1123.15 ms. Allocated memory was 400.6 MB in the beginning and 616.0 MB in the end (delta: 215.5 MB). Free memory was 271.2 MB in the beginning and 511.7 MB in the end (delta: -240.5 MB). Peak memory consumption was 69.2 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,065 INFO L168 Benchmark]: RCFGBuilder took 14095.68 ms. Allocated memory was 616.0 MB in the beginning and 723.0 MB in the end (delta: 107.0 MB). Free memory was 511.7 MB in the beginning and 496.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 207.4 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,065 INFO L168 Benchmark]: TraceAbstraction took 236119.40 ms. Allocated memory was 723.0 MB in the beginning and 1.4 GB in the end (delta: 682.1 MB). Free memory was 496.6 MB in the beginning and 449.0 MB in the end (delta: 47.6 MB). Peak memory consumption was 729.7 MB. Max. memory is 5.3 GB. [2018-07-22 14:21:40,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 308.8 MB. Free memory is still 274.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1980.03 ms. Allocated memory was 308.8 MB in the beginning and 337.1 MB in the end (delta: 28.3 MB). Free memory was 245.3 MB in the beginning and 172.3 MB in the end (delta: 72.9 MB). Peak memory consumption was 101.3 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 437.26 ms. Allocated memory was 337.1 MB in the beginning and 400.6 MB in the end (delta: 63.4 MB). Free memory was 172.3 MB in the beginning and 271.2 MB in the end (delta: -98.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1123.15 ms. Allocated memory was 400.6 MB in the beginning and 616.0 MB in the end (delta: 215.5 MB). Free memory was 271.2 MB in the beginning and 511.7 MB in the end (delta: -240.5 MB). Peak memory consumption was 69.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 14095.68 ms. Allocated memory was 616.0 MB in the beginning and 723.0 MB in the end (delta: 107.0 MB). Free memory was 511.7 MB in the beginning and 496.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 207.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 236119.40 ms. Allocated memory was 723.0 MB in the beginning and 1.4 GB in the end (delta: 682.1 MB). Free memory was 496.6 MB in the beginning and 449.0 MB in the end (delta: 47.6 MB). Peak memory consumption was 729.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 185]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 185). Cancelled while BasicCegarLoop was constructing difference of abstraction (63226states) and interpolant automaton (currently 14 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (54896 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 236.0s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 224.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4489 SDtfs, 17653 SDslu, 2156 SDs, 0 SdLazy, 47925 SolverSat, 6633 SolverUnsat, 63 SolverUnknown, 0 SolverNotchecked, 213.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1467 GetRequests, 1415 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63226occurred in iteration=9, 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: 2.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 26201 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 4461 NumberOfCodeBlocks, 4461 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4448 ConstructedInterpolants, 117 QuantifiedInterpolants, 8542316 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1816 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 4705/5814 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label21_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_14-21-40-100.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label21_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_14-21-40-100.csv Completed graceful shutdown