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/Problem12_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 11:48:46,416 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 11:48:46,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 11:48:46,433 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 11:48:46,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 11:48:46,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 11:48:46,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 11:48:46,436 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 11:48:46,438 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 11:48:46,439 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 11:48:46,440 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 11:48:46,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 11:48:46,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 11:48:46,442 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 11:48:46,443 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 11:48:46,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 11:48:46,444 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 11:48:46,446 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 11:48:46,448 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 11:48:46,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 11:48:46,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 11:48:46,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 11:48:46,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 11:48:46,454 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 11:48:46,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 11:48:46,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 11:48:46,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 11:48:46,457 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 11:48:46,458 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 11:48:46,462 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 11:48:46,463 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 11:48:46,463 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-22 11:48:46,466 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 11:48:46,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 11:48:46,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 11:48:46,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 11:48:46,483 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 11:48:46,483 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 11:48:46,483 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 11:48:46,484 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 11:48:46,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 11:48:46,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 11:48:46,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 11:48:46,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 11:48:46,485 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 11:48:46,485 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 11:48:46,485 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 11:48:46,485 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 11:48:46,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 11:48:46,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 11:48:46,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 11:48:46,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 11:48:46,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 11:48:46,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 11:48:46,487 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 11:48:46,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 11:48:46,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 11:48:46,487 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 11:48:46,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 11:48:46,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 11:48:46,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 11:48:46,488 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 11:48:46,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 11:48:46,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 11:48:46,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 11:48:46,568 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 11:48:46,568 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 11:48:46,570 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18_true-unreach-call.c [2018-07-22 11:48:46,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/891ad7492/5b51bfbd88d14171ae11f53a14931ce2/FLAG6220189b6 [2018-07-22 11:48:47,460 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 11:48:47,460 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label18_true-unreach-call.c [2018-07-22 11:48:47,513 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/891ad7492/5b51bfbd88d14171ae11f53a14931ce2/FLAG6220189b6 [2018-07-22 11:48:47,534 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/891ad7492/5b51bfbd88d14171ae11f53a14931ce2 [2018-07-22 11:48:47,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 11:48:47,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 11:48:47,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 11:48:47,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 11:48:47,565 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 11:48:47,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:48:47" (1/1) ... [2018-07-22 11:48:47,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5fd596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:47, skipping insertion in model container [2018-07-22 11:48:47,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:48:47" (1/1) ... [2018-07-22 11:48:47,938 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 11:48:49,120 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 11:48:49,145 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 11:48:50,023 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 11:48:50,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50 WrapperNode [2018-07-22 11:48:50,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 11:48:50,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 11:48:50,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 11:48:50,311 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 11:48:50,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:50,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:50,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 11:48:50,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 11:48:50,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 11:48:50,744 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 11:48:50,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:50,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:50,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:50,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:51,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:51,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:51,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (1/1) ... [2018-07-22 11:48:51,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 11:48:51,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 11:48:51,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 11:48:51,979 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 11:48:51,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (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 11:48:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 11:48:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 11:48:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 11:49:01,998 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 11:49:01,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:49:01 BoogieIcfgContainer [2018-07-22 11:49:01,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 11:49:02,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 11:49:02,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 11:49:02,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 11:49:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:48:47" (1/3) ... [2018-07-22 11:49:02,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e687c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:49:02, skipping insertion in model container [2018-07-22 11:49:02,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:48:50" (2/3) ... [2018-07-22 11:49:02,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e687c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:49:02, skipping insertion in model container [2018-07-22 11:49:02,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:49:01" (3/3) ... [2018-07-22 11:49:02,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label18_true-unreach-call.c [2018-07-22 11:49:02,015 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 11:49:02,024 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 11:49:02,088 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 11:49:02,089 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 11:49:02,089 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 11:49:02,089 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 11:49:02,089 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 11:49:02,089 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 11:49:02,089 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 11:49:02,089 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 11:49:02,090 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 11:49:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-07-22 11:49:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-07-22 11:49:02,152 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:02,154 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] [2018-07-22 11:49:02,156 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1704727530, now seen corresponding path program 1 times [2018-07-22 11:49:02,164 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:02,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:02,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:02,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:02,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:02,631 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 11:49:02,634 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:49:02,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 11:49:02,662 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:49:02,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:49:02,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:49:02,680 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-07-22 11:49:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:49:13,140 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-07-22 11:49:13,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:49:13,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-07-22 11:49:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:49:13,185 INFO L225 Difference]: With dead ends: 3162 [2018-07-22 11:49:13,186 INFO L226 Difference]: Without dead ends: 2336 [2018-07-22 11:49:13,198 INFO L578 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 [2018-07-22 11:49:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-07-22 11:49:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2018-07-22 11:49:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2018-07-22 11:49:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3769 transitions. [2018-07-22 11:49:13,367 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3769 transitions. Word has length 54 [2018-07-22 11:49:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:49:13,368 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 3769 transitions. [2018-07-22 11:49:13,368 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:49:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3769 transitions. [2018-07-22 11:49:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-22 11:49:13,375 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:13,375 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, 1, 1, 1, 1, 1, 1, 1, 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 11:49:13,375 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash -660690775, now seen corresponding path program 1 times [2018-07-22 11:49:13,375 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:13,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:13,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:13,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:13,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:49:13,667 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:49:13,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 11:49:13,670 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:49:13,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:49:13,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:49:13,671 INFO L87 Difference]: Start difference. First operand 2336 states and 3769 transitions. Second operand 4 states. [2018-07-22 11:49:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:49:22,459 INFO L93 Difference]: Finished difference Result 9182 states and 14916 transitions. [2018-07-22 11:49:22,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:49:22,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2018-07-22 11:49:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:49:22,499 INFO L225 Difference]: With dead ends: 9182 [2018-07-22 11:49:22,500 INFO L226 Difference]: Without dead ends: 6848 [2018-07-22 11:49:22,505 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 11:49:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2018-07-22 11:49:22,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 6848. [2018-07-22 11:49:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6848 states. [2018-07-22 11:49:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 9790 transitions. [2018-07-22 11:49:22,686 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 9790 transitions. Word has length 131 [2018-07-22 11:49:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:49:22,686 INFO L471 AbstractCegarLoop]: Abstraction has 6848 states and 9790 transitions. [2018-07-22 11:49:22,686 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:49:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 9790 transitions. [2018-07-22 11:49:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-22 11:49:22,699 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:22,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:22,703 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash -364433793, now seen corresponding path program 1 times [2018-07-22 11:49:22,703 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:22,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:22,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:22,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:22,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 11:49:23,092 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:49:23,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:49:23,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:49:23,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:49:23,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:49:23,095 INFO L87 Difference]: Start difference. First operand 6848 states and 9790 transitions. Second operand 4 states. [2018-07-22 11:49:29,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:49:29,159 INFO L93 Difference]: Finished difference Result 15950 states and 22998 transitions. [2018-07-22 11:49:29,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:49:29,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2018-07-22 11:49:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:49:29,200 INFO L225 Difference]: With dead ends: 15950 [2018-07-22 11:49:29,200 INFO L226 Difference]: Without dead ends: 9104 [2018-07-22 11:49:29,209 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 11:49:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9104 states. [2018-07-22 11:49:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9104 to 9104. [2018-07-22 11:49:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9104 states. [2018-07-22 11:49:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9104 states to 9104 states and 11803 transitions. [2018-07-22 11:49:29,437 INFO L78 Accepts]: Start accepts. Automaton has 9104 states and 11803 transitions. Word has length 199 [2018-07-22 11:49:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:49:29,439 INFO L471 AbstractCegarLoop]: Abstraction has 9104 states and 11803 transitions. [2018-07-22 11:49:29,439 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:49:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9104 states and 11803 transitions. [2018-07-22 11:49:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-07-22 11:49:29,444 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:29,445 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, 2, 2, 2, 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] [2018-07-22 11:49:29,445 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:29,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1657494374, now seen corresponding path program 1 times [2018-07-22 11:49:29,445 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:29,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:29,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:29,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:29,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-22 11:49:29,839 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:49:29,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 11:49:29,840 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:49:29,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:49:29,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:49:29,841 INFO L87 Difference]: Start difference. First operand 9104 states and 11803 transitions. Second operand 4 states. [2018-07-22 11:49:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:49:35,561 INFO L93 Difference]: Finished difference Result 36332 states and 47129 transitions. [2018-07-22 11:49:35,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:49:35,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2018-07-22 11:49:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:49:35,646 INFO L225 Difference]: With dead ends: 36332 [2018-07-22 11:49:35,646 INFO L226 Difference]: Without dead ends: 27230 [2018-07-22 11:49:35,656 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 11:49:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27230 states. [2018-07-22 11:49:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27230 to 18128. [2018-07-22 11:49:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18128 states. [2018-07-22 11:49:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 22255 transitions. [2018-07-22 11:49:36,068 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 22255 transitions. Word has length 223 [2018-07-22 11:49:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:49:36,069 INFO L471 AbstractCegarLoop]: Abstraction has 18128 states and 22255 transitions. [2018-07-22 11:49:36,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:49:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 22255 transitions. [2018-07-22 11:49:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-07-22 11:49:36,075 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:36,075 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:49:36,075 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash 706202419, now seen corresponding path program 1 times [2018-07-22 11:49:36,076 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:36,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:36,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:36,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:36,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:36,618 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-22 11:49:37,079 WARN L169 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-07-22 11:49:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-22 11:49:37,597 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:49:37,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-22 11:49:37,598 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 11:49:37,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 11:49:37,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-07-22 11:49:37,598 INFO L87 Difference]: Start difference. First operand 18128 states and 22255 transitions. Second operand 7 states. [2018-07-22 11:49:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:49:44,756 INFO L93 Difference]: Finished difference Result 41518 states and 49959 transitions. [2018-07-22 11:49:44,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 11:49:44,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2018-07-22 11:49:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:49:44,789 INFO L225 Difference]: With dead ends: 41518 [2018-07-22 11:49:44,789 INFO L226 Difference]: Without dead ends: 23392 [2018-07-22 11:49:44,804 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-07-22 11:49:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23392 states. [2018-07-22 11:49:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23392 to 23392. [2018-07-22 11:49:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23392 states. [2018-07-22 11:49:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23392 states to 23392 states and 27579 transitions. [2018-07-22 11:49:45,166 INFO L78 Accepts]: Start accepts. Automaton has 23392 states and 27579 transitions. Word has length 269 [2018-07-22 11:49:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:49:45,166 INFO L471 AbstractCegarLoop]: Abstraction has 23392 states and 27579 transitions. [2018-07-22 11:49:45,166 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 11:49:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 23392 states and 27579 transitions. [2018-07-22 11:49:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-22 11:49:45,177 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:49:45,177 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, 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] [2018-07-22 11:49:45,177 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:49:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1186170048, now seen corresponding path program 1 times [2018-07-22 11:49:45,179 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:49:45,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:49:45,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:45,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:45,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:49:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:45,679 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-07-22 11:49:45,989 WARN L169 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-07-22 11:49:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 256 proven. 5 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-22 11:49:46,090 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:49:46,090 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 11:49:46,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:49:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:49:46,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:49:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-22 11:49:46,516 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 11:49:46,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-07-22 11:49:46,518 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 11:49:46,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 11:49:46,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 11:49:46,518 INFO L87 Difference]: Start difference. First operand 23392 states and 27579 transitions. Second operand 6 states. [2018-07-22 11:49:47,891 WARN L169 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-07-22 11:50:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:00,858 INFO L93 Difference]: Finished difference Result 64110 states and 74077 transitions. [2018-07-22 11:50:00,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 11:50:00,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 317 [2018-07-22 11:50:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:00,915 INFO L225 Difference]: With dead ends: 64110 [2018-07-22 11:50:00,915 INFO L226 Difference]: Without dead ends: 38460 [2018-07-22 11:50:00,942 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-07-22 11:50:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38460 states. [2018-07-22 11:50:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38460 to 24887. [2018-07-22 11:50:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24887 states. [2018-07-22 11:50:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24887 states to 24887 states and 28484 transitions. [2018-07-22 11:50:01,486 INFO L78 Accepts]: Start accepts. Automaton has 24887 states and 28484 transitions. Word has length 317 [2018-07-22 11:50:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:50:01,487 INFO L471 AbstractCegarLoop]: Abstraction has 24887 states and 28484 transitions. [2018-07-22 11:50:01,487 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 11:50:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 24887 states and 28484 transitions. [2018-07-22 11:50:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-22 11:50:01,499 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:50:01,500 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:01,500 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:50:01,500 INFO L82 PathProgramCache]: Analyzing trace with hash 501468496, now seen corresponding path program 1 times [2018-07-22 11:50:01,501 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:50:01,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:50:01,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:01,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:50:01,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:50:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-07-22 11:50:02,232 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:50:02,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:50:02,272 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 11:50:02,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 11:50:02,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 11:50:02,272 INFO L87 Difference]: Start difference. First operand 24887 states and 28484 transitions. Second operand 5 states. [2018-07-22 11:50:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:12,633 INFO L93 Difference]: Finished difference Result 75409 states and 86678 transitions. [2018-07-22 11:50:12,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 11:50:12,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2018-07-22 11:50:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:12,711 INFO L225 Difference]: With dead ends: 75409 [2018-07-22 11:50:12,711 INFO L226 Difference]: Without dead ends: 51276 [2018-07-22 11:50:12,727 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 11:50:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51276 states. [2018-07-22 11:50:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51276 to 42250. [2018-07-22 11:50:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42250 states. [2018-07-22 11:50:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42250 states to 42250 states and 46646 transitions. [2018-07-22 11:50:13,296 INFO L78 Accepts]: Start accepts. Automaton has 42250 states and 46646 transitions. Word has length 388 [2018-07-22 11:50:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:50:13,297 INFO L471 AbstractCegarLoop]: Abstraction has 42250 states and 46646 transitions. [2018-07-22 11:50:13,297 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 11:50:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 42250 states and 46646 transitions. [2018-07-22 11:50:13,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-22 11:50:13,308 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:50:13,309 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 11:50:13,309 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:50:13,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1118379102, now seen corresponding path program 1 times [2018-07-22 11:50:13,309 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:50:13,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:50:13,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:13,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:50:13,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:50:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-22 11:50:13,759 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:50:13,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:50:13,760 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:50:13,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:50:13,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:50:13,760 INFO L87 Difference]: Start difference. First operand 42250 states and 46646 transitions. Second operand 4 states. [2018-07-22 11:50:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:18,759 INFO L93 Difference]: Finished difference Result 89762 states and 99443 transitions. [2018-07-22 11:50:18,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:50:18,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 408 [2018-07-22 11:50:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:18,847 INFO L225 Difference]: With dead ends: 89762 [2018-07-22 11:50:18,847 INFO L226 Difference]: Without dead ends: 48266 [2018-07-22 11:50:18,878 INFO L578 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 [2018-07-22 11:50:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48266 states. [2018-07-22 11:50:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48266 to 48266. [2018-07-22 11:50:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48266 states. [2018-07-22 11:50:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48266 states to 48266 states and 52196 transitions. [2018-07-22 11:50:19,630 INFO L78 Accepts]: Start accepts. Automaton has 48266 states and 52196 transitions. Word has length 408 [2018-07-22 11:50:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:50:19,631 INFO L471 AbstractCegarLoop]: Abstraction has 48266 states and 52196 transitions. [2018-07-22 11:50:19,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:50:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 48266 states and 52196 transitions. [2018-07-22 11:50:19,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-22 11:50:19,646 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:50:19,647 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 11:50:19,647 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:50:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash 462679882, now seen corresponding path program 1 times [2018-07-22 11:50:19,647 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:50:19,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:50:19,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:19,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:50:19,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:50:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-07-22 11:50:20,031 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:50:20,031 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:50:20,032 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:50:20,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:50:20,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:50:20,032 INFO L87 Difference]: Start difference. First operand 48266 states and 52196 transitions. Second operand 4 states. [2018-07-22 11:50:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:28,382 INFO L93 Difference]: Finished difference Result 161211 states and 175110 transitions. [2018-07-22 11:50:28,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:50:28,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 416 [2018-07-22 11:50:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:28,507 INFO L225 Difference]: With dead ends: 161211 [2018-07-22 11:50:28,508 INFO L226 Difference]: Without dead ends: 110663 [2018-07-22 11:50:28,548 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 11:50:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110663 states. [2018-07-22 11:50:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110663 to 103143. [2018-07-22 11:50:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103143 states. [2018-07-22 11:50:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103143 states to 103143 states and 111156 transitions. [2018-07-22 11:50:32,681 INFO L78 Accepts]: Start accepts. Automaton has 103143 states and 111156 transitions. Word has length 416 [2018-07-22 11:50:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:50:32,681 INFO L471 AbstractCegarLoop]: Abstraction has 103143 states and 111156 transitions. [2018-07-22 11:50:32,682 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:50:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103143 states and 111156 transitions. [2018-07-22 11:50:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2018-07-22 11:50:32,727 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:50:32,727 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:50:32,728 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:50:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1169196666, now seen corresponding path program 1 times [2018-07-22 11:50:32,728 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:50:32,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:50:32,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:32,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:50:32,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:50:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 540 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-07-22 11:50:33,493 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:50:33,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:50:33,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:50:33,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:50:33,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:50:33,522 INFO L87 Difference]: Start difference. First operand 103143 states and 111156 transitions. Second operand 4 states. [2018-07-22 11:50:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:38,815 INFO L93 Difference]: Finished difference Result 334872 states and 363435 transitions. [2018-07-22 11:50:38,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:50:38,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 739 [2018-07-22 11:50:38,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:39,123 INFO L225 Difference]: With dead ends: 334872 [2018-07-22 11:50:39,123 INFO L226 Difference]: Without dead ends: 215913 [2018-07-22 11:50:39,213 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 11:50:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215913 states. [2018-07-22 11:50:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215913 to 201623. [2018-07-22 11:50:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201623 states. [2018-07-22 11:50:47,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201623 states to 201623 states and 213944 transitions. [2018-07-22 11:50:47,203 INFO L78 Accepts]: Start accepts. Automaton has 201623 states and 213944 transitions. Word has length 739 [2018-07-22 11:50:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:50:47,205 INFO L471 AbstractCegarLoop]: Abstraction has 201623 states and 213944 transitions. [2018-07-22 11:50:47,205 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:50:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 201623 states and 213944 transitions. [2018-07-22 11:50:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2018-07-22 11:50:47,270 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:50:47,271 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:47,271 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:50:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1134151904, now seen corresponding path program 1 times [2018-07-22 11:50:47,272 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:50:47,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:50:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:47,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:50:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:50:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:50:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2018-07-22 11:50:48,032 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:50:48,032 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:50:48,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:50:48,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:50:48,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:50:48,036 INFO L87 Difference]: Start difference. First operand 201623 states and 213944 transitions. Second operand 4 states. [2018-07-22 11:50:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:50:58,128 INFO L93 Difference]: Finished difference Result 416020 states and 441118 transitions. [2018-07-22 11:50:58,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:50:58,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 827 [2018-07-22 11:50:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:50:58,361 INFO L225 Difference]: With dead ends: 416020 [2018-07-22 11:50:58,361 INFO L226 Difference]: Without dead ends: 215151 [2018-07-22 11:50:58,856 INFO L578 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 [2018-07-22 11:50:58,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215151 states. [2018-07-22 11:51:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215151 to 208383. [2018-07-22 11:51:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208383 states. [2018-07-22 11:51:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208383 states to 208383 states and 219552 transitions. [2018-07-22 11:51:01,496 INFO L78 Accepts]: Start accepts. Automaton has 208383 states and 219552 transitions. Word has length 827 [2018-07-22 11:51:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:51:01,496 INFO L471 AbstractCegarLoop]: Abstraction has 208383 states and 219552 transitions. [2018-07-22 11:51:01,497 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:51:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 208383 states and 219552 transitions. [2018-07-22 11:51:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-07-22 11:51:01,580 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:51:01,581 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 11:51:01,581 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:51:01,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1638214026, now seen corresponding path program 1 times [2018-07-22 11:51:01,582 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:51:01,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:51:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:51:01,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:51:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:51:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:51:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 592 proven. 52 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-22 11:51:02,544 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 11:51:02,544 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 11:51:02,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:51:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:51:03,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 11:51:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 592 proven. 52 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-22 11:51:04,968 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 11:51:04,968 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-07-22 11:51:04,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 11:51:04,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 11:51:04,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 11:51:04,970 INFO L87 Difference]: Start difference. First operand 208383 states and 219552 transitions. Second operand 5 states. [2018-07-22 11:51:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:51:19,376 INFO L93 Difference]: Finished difference Result 497987 states and 526732 transitions. [2018-07-22 11:51:19,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 11:51:19,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 843 [2018-07-22 11:51:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:51:19,677 INFO L225 Difference]: With dead ends: 497987 [2018-07-22 11:51:19,677 INFO L226 Difference]: Without dead ends: 287346 [2018-07-22 11:51:19,740 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 844 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 11:51:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287346 states. [2018-07-22 11:51:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287346 to 251996. [2018-07-22 11:51:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251996 states. [2018-07-22 11:51:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251996 states to 251996 states and 262824 transitions. [2018-07-22 11:51:28,292 INFO L78 Accepts]: Start accepts. Automaton has 251996 states and 262824 transitions. Word has length 843 [2018-07-22 11:51:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:51:28,292 INFO L471 AbstractCegarLoop]: Abstraction has 251996 states and 262824 transitions. [2018-07-22 11:51:28,293 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 11:51:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 251996 states and 262824 transitions. [2018-07-22 11:51:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2018-07-22 11:51:28,967 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 11:51:28,973 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:51:28,973 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 11:51:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1880141531, now seen corresponding path program 1 times [2018-07-22 11:51:28,974 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 11:51:28,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 11:51:28,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:51:28,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 11:51:28,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 11:51:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 11:51:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-07-22 11:51:30,376 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 11:51:30,376 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 11:51:30,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 11:51:30,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 11:51:30,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:51:30,377 INFO L87 Difference]: Start difference. First operand 251996 states and 262824 transitions. Second operand 4 states. [2018-07-22 11:51:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 11:51:37,467 INFO L93 Difference]: Finished difference Result 496457 states and 518016 transitions. [2018-07-22 11:51:37,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 11:51:37,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1022 [2018-07-22 11:51:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 11:51:37,468 INFO L225 Difference]: With dead ends: 496457 [2018-07-22 11:51:37,468 INFO L226 Difference]: Without dead ends: 0 [2018-07-22 11:51:37,521 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 11:51:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-22 11:51:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-22 11:51:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-22 11:51:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-22 11:51:37,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1022 [2018-07-22 11:51:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 11:51:37,522 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-22 11:51:37,523 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 11:51:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-22 11:51:37,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-22 11:51:37,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-22 11:51:38,297 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:38,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:42,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:42,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:42,900 WARN L169 SmtUtils]: Spent 5.37 s on a formula simplification. DAG size of input: 706 DAG size of output: 668 [2018-07-22 11:51:43,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:43,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:44,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:44,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:44,874 WARN L169 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 706 DAG size of output: 668 [2018-07-22 11:51:45,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:45,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:46,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:46,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:46,875 WARN L169 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 706 DAG size of output: 668 [2018-07-22 11:51:47,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:47,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:48,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:48,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:48,770 WARN L169 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 706 DAG size of output: 668 [2018-07-22 11:51:49,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:49,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:50,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:50,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-22 11:51:50,662 WARN L169 SmtUtils]: Spent 1.89 s on a formula simplification. DAG size of input: 706 DAG size of output: 668 [2018-07-22 11:51:57,153 WARN L169 SmtUtils]: Spent 6.48 s on a formula simplification. DAG size of input: 667 DAG size of output: 103 [2018-07-22 11:52:03,176 WARN L169 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 667 DAG size of output: 103 [2018-07-22 11:52:09,219 WARN L169 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 667 DAG size of output: 103 [2018-07-22 11:52:15,148 WARN L169 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 667 DAG size of output: 103 Received shutdown request... [2018-07-22 11:52:16,880 WARN L177 SmtUtils]: Removed 2 from assertion stack [2018-07-22 11:52:16,880 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-22 11:52:16,881 INFO L168 Benchmark]: Toolchain (without parser) took 209335.17 ms. Allocated memory was 301.5 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 234.4 MB in the beginning and 1.2 GB in the end (delta: -993.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,882 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 11:52:16,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2750.22 ms. Allocated memory was 301.5 MB in the beginning and 397.4 MB in the end (delta: 95.9 MB). Free memory was 233.4 MB in the beginning and 287.7 MB in the end (delta: -54.3 MB). Peak memory consumption was 112.6 MB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 434.96 ms. Allocated memory is still 397.4 MB. Free memory was 287.7 MB in the beginning and 209.1 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,883 INFO L168 Benchmark]: Boogie Preprocessor took 1234.73 ms. Allocated memory was 397.4 MB in the beginning and 621.3 MB in the end (delta: 223.9 MB). Free memory was 209.1 MB in the beginning and 491.3 MB in the end (delta: -282.2 MB). Peak memory consumption was 76.1 MB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,884 INFO L168 Benchmark]: RCFGBuilder took 10020.26 ms. Allocated memory was 621.3 MB in the beginning and 743.4 MB in the end (delta: 122.2 MB). Free memory was 491.3 MB in the beginning and 496.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 279.5 MB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,884 INFO L168 Benchmark]: TraceAbstraction took 194880.40 ms. Allocated memory was 743.4 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 496.6 MB in the beginning and 1.2 GB in the end (delta: -731.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-07-22 11:52:16,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 301.5 MB. Free memory is still 266.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2750.22 ms. Allocated memory was 301.5 MB in the beginning and 397.4 MB in the end (delta: 95.9 MB). Free memory was 233.4 MB in the beginning and 287.7 MB in the end (delta: -54.3 MB). Peak memory consumption was 112.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 434.96 ms. Allocated memory is still 397.4 MB. Free memory was 287.7 MB in the beginning and 209.1 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1234.73 ms. Allocated memory was 397.4 MB in the beginning and 621.3 MB in the end (delta: 223.9 MB). Free memory was 209.1 MB in the beginning and 491.3 MB in the end (delta: -282.2 MB). Peak memory consumption was 76.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 10020.26 ms. Allocated memory was 621.3 MB in the beginning and 743.4 MB in the end (delta: 122.2 MB). Free memory was 491.3 MB in the beginning and 496.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 279.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 194880.40 ms. Allocated memory was 743.4 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 496.6 MB in the beginning and 1.2 GB in the end (delta: -731.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 667. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem12_label18_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_11-52-16-900.csv Completed graceful shutdown