java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:45:09,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:45:09,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:45:09,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:45:09,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:45:09,408 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:45:09,409 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:45:09,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:45:09,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:45:09,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:45:09,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:45:09,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:45:09,419 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:45:09,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:45:09,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:45:09,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:45:09,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:45:09,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:45:09,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:45:09,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:45:09,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:45:09,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:45:09,437 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 23:45:09,452 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-23 23:45:09,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:45:09,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:45:09,484 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:45:09,484 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-23 23:45:09,485 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-23 23:45:09,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-23 23:45:09,485 INFO L133 SettingsManager]: * Use SBE=true [2018-07-23 23:45:09,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:45:09,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:45:09,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:45:09,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:45:09,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:45:09,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:45:09,488 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:45:09,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:45:09,489 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:45:09,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:45:09,489 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:45:09,489 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-23 23:45:09,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:45:09,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:45:09,490 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:45:09,490 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:45:09,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:45:09,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:45:09,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:45:09,574 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:45:09,575 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:45:09,575 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-07-23 23:45:09,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00345dfa6/08abffadc19d45d6a435596c8b65ae8e/FLAGc147b0a43 [2018-07-23 23:45:10,341 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:45:10,342 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-07-23 23:45:10,368 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00345dfa6/08abffadc19d45d6a435596c8b65ae8e/FLAGc147b0a43 [2018-07-23 23:45:10,388 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00345dfa6/08abffadc19d45d6a435596c8b65ae8e [2018-07-23 23:45:10,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:45:10,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:45:10,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:45:10,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:45:10,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:45:10,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:45:10" (1/1) ... [2018-07-23 23:45:10,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9c81f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:10, skipping insertion in model container [2018-07-23 23:45:10,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:45:10" (1/1) ... [2018-07-23 23:45:10,656 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:45:11,154 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:45:11,173 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:45:11,502 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:45:11,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11 WrapperNode [2018-07-23 23:45:11,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:45:11,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:45:11,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:45:11,586 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:45:11,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:11,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:11,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:45:11,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:45:11,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:45:11,765 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:45:12,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... [2018-07-23 23:45:12,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:45:12,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:45:12,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:45:12,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:45:12,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:45:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-23 23:45:12,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:45:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:45:18,941 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:45:18,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:45:18 BoogieIcfgContainer [2018-07-23 23:45:18,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:45:18,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:45:18,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:45:18,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:45:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:45:10" (1/3) ... [2018-07-23 23:45:18,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378e2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:45:18, skipping insertion in model container [2018-07-23 23:45:18,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:45:11" (2/3) ... [2018-07-23 23:45:18,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378e2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:45:18, skipping insertion in model container [2018-07-23 23:45:18,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:45:18" (3/3) ... [2018-07-23 23:45:18,952 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13_false-unreach-call.c [2018-07-23 23:45:18,963 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:45:18,974 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:45:19,053 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:45:19,054 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:45:19,054 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:45:19,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:45:19,056 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:45:19,057 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:45:19,057 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:45:19,057 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:45:19,057 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:45:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-23 23:45:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-23 23:45:19,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:19,106 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:19,107 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash -689951132, now seen corresponding path program 1 times [2018-07-23 23:45:19,115 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:19,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:19,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:19,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:19,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:20,011 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:20,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:20,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:20,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:20,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:20,039 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-23 23:45:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:23,657 INFO L93 Difference]: Finished difference Result 1089 states and 1954 transitions. [2018-07-23 23:45:23,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:45:23,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-07-23 23:45:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:23,685 INFO L225 Difference]: With dead ends: 1089 [2018-07-23 23:45:23,685 INFO L226 Difference]: Without dead ends: 779 [2018-07-23 23:45:23,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:23,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-07-23 23:45:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 515. [2018-07-23 23:45:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-07-23 23:45:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 887 transitions. [2018-07-23 23:45:23,804 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 887 transitions. Word has length 156 [2018-07-23 23:45:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:23,805 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 887 transitions. [2018-07-23 23:45:23,805 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:45:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 887 transitions. [2018-07-23 23:45:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 23:45:23,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:23,820 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 23:45:23,820 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:23,821 INFO L82 PathProgramCache]: Analyzing trace with hash -447532331, now seen corresponding path program 1 times [2018-07-23 23:45:23,821 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:23,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:23,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:23,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:23,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:24,069 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:24,069 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:45:24,072 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:24,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:24,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:24,074 INFO L87 Difference]: Start difference. First operand 515 states and 887 transitions. Second operand 3 states. [2018-07-23 23:45:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:25,356 INFO L93 Difference]: Finished difference Result 1530 states and 2643 transitions. [2018-07-23 23:45:25,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:25,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2018-07-23 23:45:25,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:25,366 INFO L225 Difference]: With dead ends: 1530 [2018-07-23 23:45:25,367 INFO L226 Difference]: Without dead ends: 1017 [2018-07-23 23:45:25,371 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2018-07-23 23:45:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1014. [2018-07-23 23:45:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2018-07-23 23:45:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1749 transitions. [2018-07-23 23:45:25,409 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1749 transitions. Word has length 162 [2018-07-23 23:45:25,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:25,409 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1749 transitions. [2018-07-23 23:45:25,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1749 transitions. [2018-07-23 23:45:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-07-23 23:45:25,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:25,414 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 23:45:25,414 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash 792092464, now seen corresponding path program 1 times [2018-07-23 23:45:25,415 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:25,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:25,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:25,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:25,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:25,521 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:25,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:45:25,522 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:25,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:25,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:25,523 INFO L87 Difference]: Start difference. First operand 1014 states and 1749 transitions. Second operand 3 states. [2018-07-23 23:45:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:28,384 INFO L93 Difference]: Finished difference Result 2924 states and 5111 transitions. [2018-07-23 23:45:28,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:28,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2018-07-23 23:45:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:28,397 INFO L225 Difference]: With dead ends: 2924 [2018-07-23 23:45:28,398 INFO L226 Difference]: Without dead ends: 1912 [2018-07-23 23:45:28,401 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2018-07-23 23:45:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1907. [2018-07-23 23:45:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2018-07-23 23:45:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 3067 transitions. [2018-07-23 23:45:28,456 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 3067 transitions. Word has length 163 [2018-07-23 23:45:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:28,456 INFO L471 AbstractCegarLoop]: Abstraction has 1907 states and 3067 transitions. [2018-07-23 23:45:28,456 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 3067 transitions. [2018-07-23 23:45:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-23 23:45:28,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:28,461 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 23:45:28,462 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -475146013, now seen corresponding path program 1 times [2018-07-23 23:45:28,462 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:28,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:28,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:28,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:28,594 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:28,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:45:28,594 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:28,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:28,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:28,595 INFO L87 Difference]: Start difference. First operand 1907 states and 3067 transitions. Second operand 3 states. [2018-07-23 23:45:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:30,320 INFO L93 Difference]: Finished difference Result 5471 states and 8944 transitions. [2018-07-23 23:45:30,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:30,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2018-07-23 23:45:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:30,339 INFO L225 Difference]: With dead ends: 5471 [2018-07-23 23:45:30,340 INFO L226 Difference]: Without dead ends: 3566 [2018-07-23 23:45:30,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-07-23 23:45:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3539. [2018-07-23 23:45:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3539 states. [2018-07-23 23:45:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 5597 transitions. [2018-07-23 23:45:30,429 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 5597 transitions. Word has length 165 [2018-07-23 23:45:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:30,430 INFO L471 AbstractCegarLoop]: Abstraction has 3539 states and 5597 transitions. [2018-07-23 23:45:30,430 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 5597 transitions. [2018-07-23 23:45:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-23 23:45:30,437 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:30,437 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 23:45:30,438 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:30,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1053562734, now seen corresponding path program 1 times [2018-07-23 23:45:30,438 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:30,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:30,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:30,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:30,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:30,792 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:30,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:30,793 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:30,793 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:30,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:30,793 INFO L87 Difference]: Start difference. First operand 3539 states and 5597 transitions. Second operand 4 states. [2018-07-23 23:45:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:34,366 INFO L93 Difference]: Finished difference Result 13609 states and 21776 transitions. [2018-07-23 23:45:34,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:45:34,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-07-23 23:45:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:34,412 INFO L225 Difference]: With dead ends: 13609 [2018-07-23 23:45:34,413 INFO L226 Difference]: Without dead ends: 10072 [2018-07-23 23:45:34,420 INFO L573 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 [2018-07-23 23:45:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2018-07-23 23:45:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 10069. [2018-07-23 23:45:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10069 states. [2018-07-23 23:45:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13791 transitions. [2018-07-23 23:45:34,640 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13791 transitions. Word has length 176 [2018-07-23 23:45:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:34,640 INFO L471 AbstractCegarLoop]: Abstraction has 10069 states and 13791 transitions. [2018-07-23 23:45:34,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:45:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13791 transitions. [2018-07-23 23:45:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-23 23:45:34,658 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:34,658 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:34,658 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:34,659 INFO L82 PathProgramCache]: Analyzing trace with hash -624682400, now seen corresponding path program 1 times [2018-07-23 23:45:34,659 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:34,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:34,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:34,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:34,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:45:35,122 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:35,122 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:45:35,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 23:45:35,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 23:45:35,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 23:45:35,123 INFO L87 Difference]: Start difference. First operand 10069 states and 13791 transitions. Second operand 5 states. [2018-07-23 23:45:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:38,465 INFO L93 Difference]: Finished difference Result 22667 states and 31303 transitions. [2018-07-23 23:45:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 23:45:38,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2018-07-23 23:45:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:38,517 INFO L225 Difference]: With dead ends: 22667 [2018-07-23 23:45:38,517 INFO L226 Difference]: Without dead ends: 12600 [2018-07-23 23:45:38,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-23 23:45:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12600 states. [2018-07-23 23:45:38,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12600 to 10477. [2018-07-23 23:45:38,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10477 states. [2018-07-23 23:45:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 14190 transitions. [2018-07-23 23:45:38,717 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 14190 transitions. Word has length 196 [2018-07-23 23:45:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:38,718 INFO L471 AbstractCegarLoop]: Abstraction has 10477 states and 14190 transitions. [2018-07-23 23:45:38,718 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 23:45:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 14190 transitions. [2018-07-23 23:45:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-07-23 23:45:38,736 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:38,737 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:38,737 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1878044035, now seen corresponding path program 1 times [2018-07-23 23:45:38,738 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:38,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:38,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:38,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:38,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-23 23:45:38,953 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:38,953 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:45:38,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:38,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:38,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:38,954 INFO L87 Difference]: Start difference. First operand 10477 states and 14190 transitions. Second operand 3 states. [2018-07-23 23:45:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:40,659 INFO L93 Difference]: Finished difference Result 20905 states and 28314 transitions. [2018-07-23 23:45:40,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:40,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-07-23 23:45:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:40,686 INFO L225 Difference]: With dead ends: 20905 [2018-07-23 23:45:40,686 INFO L226 Difference]: Without dead ends: 10430 [2018-07-23 23:45:40,697 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10430 states. [2018-07-23 23:45:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10430 to 10430. [2018-07-23 23:45:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10430 states. [2018-07-23 23:45:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10430 states to 10430 states and 13784 transitions. [2018-07-23 23:45:40,846 INFO L78 Accepts]: Start accepts. Automaton has 10430 states and 13784 transitions. Word has length 209 [2018-07-23 23:45:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:40,847 INFO L471 AbstractCegarLoop]: Abstraction has 10430 states and 13784 transitions. [2018-07-23 23:45:40,847 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10430 states and 13784 transitions. [2018-07-23 23:45:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-07-23 23:45:40,868 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:40,873 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:40,874 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:40,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1908645910, now seen corresponding path program 1 times [2018-07-23 23:45:40,874 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:40,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:40,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:40,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:40,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:45:41,189 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:41,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:41,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:41,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:41,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:41,191 INFO L87 Difference]: Start difference. First operand 10430 states and 13784 transitions. Second operand 4 states. [2018-07-23 23:45:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:42,764 INFO L93 Difference]: Finished difference Result 20865 states and 27580 transitions. [2018-07-23 23:45:42,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:45:42,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-07-23 23:45:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:42,788 INFO L225 Difference]: With dead ends: 20865 [2018-07-23 23:45:42,788 INFO L226 Difference]: Without dead ends: 10437 [2018-07-23 23:45:42,800 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:42,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10437 states. [2018-07-23 23:45:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10437 to 10430. [2018-07-23 23:45:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10430 states. [2018-07-23 23:45:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10430 states to 10430 states and 13688 transitions. [2018-07-23 23:45:42,947 INFO L78 Accepts]: Start accepts. Automaton has 10430 states and 13688 transitions. Word has length 247 [2018-07-23 23:45:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:42,947 INFO L471 AbstractCegarLoop]: Abstraction has 10430 states and 13688 transitions. [2018-07-23 23:45:42,947 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:45:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 10430 states and 13688 transitions. [2018-07-23 23:45:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-23 23:45:42,961 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:42,961 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:42,961 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:42,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1439838077, now seen corresponding path program 1 times [2018-07-23 23:45:42,962 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:42,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:42,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:42,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:42,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:45:43,166 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:43,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:43,166 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:43,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:43,167 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:43,167 INFO L87 Difference]: Start difference. First operand 10430 states and 13688 transitions. Second operand 3 states. [2018-07-23 23:45:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:44,949 INFO L93 Difference]: Finished difference Result 30041 states and 39217 transitions. [2018-07-23 23:45:44,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:44,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-07-23 23:45:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:44,973 INFO L225 Difference]: With dead ends: 30041 [2018-07-23 23:45:44,974 INFO L226 Difference]: Without dead ends: 19613 [2018-07-23 23:45:44,988 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19613 states. [2018-07-23 23:45:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19613 to 19611. [2018-07-23 23:45:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19611 states. [2018-07-23 23:45:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19611 states to 19611 states and 24182 transitions. [2018-07-23 23:45:45,465 INFO L78 Accepts]: Start accepts. Automaton has 19611 states and 24182 transitions. Word has length 248 [2018-07-23 23:45:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:45,465 INFO L471 AbstractCegarLoop]: Abstraction has 19611 states and 24182 transitions. [2018-07-23 23:45:45,467 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19611 states and 24182 transitions. [2018-07-23 23:45:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-23 23:45:45,489 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:45,489 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:45,490 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1685567780, now seen corresponding path program 1 times [2018-07-23 23:45:45,490 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:45,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:45,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:45,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:45,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:45:45,911 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:45,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:45,911 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:45,912 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:45,912 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:45,912 INFO L87 Difference]: Start difference. First operand 19611 states and 24182 transitions. Second operand 4 states. [2018-07-23 23:45:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:48,303 INFO L93 Difference]: Finished difference Result 58003 states and 71279 transitions. [2018-07-23 23:45:48,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:45:48,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2018-07-23 23:45:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:48,344 INFO L225 Difference]: With dead ends: 58003 [2018-07-23 23:45:48,344 INFO L226 Difference]: Without dead ends: 38394 [2018-07-23 23:45:48,366 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38394 states. [2018-07-23 23:45:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38394 to 38392. [2018-07-23 23:45:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38392 states. [2018-07-23 23:45:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38392 states to 38392 states and 47052 transitions. [2018-07-23 23:45:48,838 INFO L78 Accepts]: Start accepts. Automaton has 38392 states and 47052 transitions. Word has length 259 [2018-07-23 23:45:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:48,839 INFO L471 AbstractCegarLoop]: Abstraction has 38392 states and 47052 transitions. [2018-07-23 23:45:48,839 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:45:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 38392 states and 47052 transitions. [2018-07-23 23:45:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-07-23 23:45:48,860 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:48,860 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:45:48,860 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash -374942486, now seen corresponding path program 1 times [2018-07-23 23:45:48,861 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:48,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:48,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:48,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:48,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-23 23:45:49,049 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:49,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 23:45:49,050 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:45:49,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:45:49,050 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:49,051 INFO L87 Difference]: Start difference. First operand 38392 states and 47052 transitions. Second operand 3 states. [2018-07-23 23:45:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:50,685 INFO L93 Difference]: Finished difference Result 96176 states and 117346 transitions. [2018-07-23 23:45:50,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:45:50,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-07-23 23:45:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:50,757 INFO L225 Difference]: With dead ends: 96176 [2018-07-23 23:45:50,757 INFO L226 Difference]: Without dead ends: 57786 [2018-07-23 23:45:50,790 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:45:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57786 states. [2018-07-23 23:45:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57786 to 57782. [2018-07-23 23:45:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57782 states. [2018-07-23 23:45:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57782 states to 57782 states and 70176 transitions. [2018-07-23 23:45:51,798 INFO L78 Accepts]: Start accepts. Automaton has 57782 states and 70176 transitions. Word has length 260 [2018-07-23 23:45:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:51,799 INFO L471 AbstractCegarLoop]: Abstraction has 57782 states and 70176 transitions. [2018-07-23 23:45:51,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:45:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57782 states and 70176 transitions. [2018-07-23 23:45:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-23 23:45:51,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:51,827 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:45:51,827 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2118204334, now seen corresponding path program 1 times [2018-07-23 23:45:51,828 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:51,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:51,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:51,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:51,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:52,161 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-23 23:45:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-23 23:45:52,219 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:52,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:52,220 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:52,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:52,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:52,221 INFO L87 Difference]: Start difference. First operand 57782 states and 70176 transitions. Second operand 4 states. [2018-07-23 23:45:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:45:55,583 INFO L93 Difference]: Finished difference Result 228836 states and 277371 transitions. [2018-07-23 23:45:55,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:45:55,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-07-23 23:45:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:45:55,827 INFO L225 Difference]: With dead ends: 228836 [2018-07-23 23:45:55,827 INFO L226 Difference]: Without dead ends: 171056 [2018-07-23 23:45:55,896 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171056 states. [2018-07-23 23:45:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171056 to 142778. [2018-07-23 23:45:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142778 states. [2018-07-23 23:45:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142778 states to 142778 states and 172762 transitions. [2018-07-23 23:45:58,187 INFO L78 Accepts]: Start accepts. Automaton has 142778 states and 172762 transitions. Word has length 261 [2018-07-23 23:45:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:45:58,187 INFO L471 AbstractCegarLoop]: Abstraction has 142778 states and 172762 transitions. [2018-07-23 23:45:58,187 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:45:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 142778 states and 172762 transitions. [2018-07-23 23:45:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-07-23 23:45:58,203 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:45:58,204 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:45:58,204 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:45:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash -849422186, now seen corresponding path program 1 times [2018-07-23 23:45:58,205 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:45:58,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:45:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:58,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:45:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:45:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:45:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-23 23:45:58,526 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:45:58,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:45:58,526 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:45:58,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:45:58,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:45:58,527 INFO L87 Difference]: Start difference. First operand 142778 states and 172762 transitions. Second operand 4 states. [2018-07-23 23:46:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:46:02,820 INFO L93 Difference]: Finished difference Result 403865 states and 489256 transitions. [2018-07-23 23:46:02,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:46:02,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2018-07-23 23:46:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:46:03,191 INFO L225 Difference]: With dead ends: 403865 [2018-07-23 23:46:03,191 INFO L226 Difference]: Without dead ends: 261089 [2018-07-23 23:46:03,288 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:46:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261089 states. [2018-07-23 23:46:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261089 to 261077. [2018-07-23 23:46:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261077 states. [2018-07-23 23:46:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261077 states to 261077 states and 310299 transitions. [2018-07-23 23:46:07,332 INFO L78 Accepts]: Start accepts. Automaton has 261077 states and 310299 transitions. Word has length 268 [2018-07-23 23:46:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:46:07,333 INFO L471 AbstractCegarLoop]: Abstraction has 261077 states and 310299 transitions. [2018-07-23 23:46:07,333 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:46:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 261077 states and 310299 transitions. [2018-07-23 23:46:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-23 23:46:07,350 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:46:07,351 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:46:07,351 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:46:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1444184931, now seen corresponding path program 1 times [2018-07-23 23:46:07,351 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:46:07,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:46:07,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:07,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:46:07,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:46:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:46:07,777 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:46:07,777 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:46:07,778 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:46:07,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:46:07,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:46:07,778 INFO L87 Difference]: Start difference. First operand 261077 states and 310299 transitions. Second operand 4 states. [2018-07-23 23:46:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:46:13,784 INFO L93 Difference]: Finished difference Result 514757 states and 611752 transitions. [2018-07-23 23:46:13,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:46:13,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2018-07-23 23:46:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:46:14,133 INFO L225 Difference]: With dead ends: 514757 [2018-07-23 23:46:14,133 INFO L226 Difference]: Without dead ends: 253682 [2018-07-23 23:46:14,243 INFO L573 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 [2018-07-23 23:46:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253682 states. [2018-07-23 23:46:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253682 to 245691. [2018-07-23 23:46:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245691 states. [2018-07-23 23:46:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245691 states to 245691 states and 285104 transitions. [2018-07-23 23:46:26,391 INFO L78 Accepts]: Start accepts. Automaton has 245691 states and 285104 transitions. Word has length 305 [2018-07-23 23:46:26,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:46:26,392 INFO L471 AbstractCegarLoop]: Abstraction has 245691 states and 285104 transitions. [2018-07-23 23:46:26,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:46:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 245691 states and 285104 transitions. [2018-07-23 23:46:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-23 23:46:26,415 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:46:26,415 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:46:26,415 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:46:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 963026130, now seen corresponding path program 1 times [2018-07-23 23:46:26,416 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:46:26,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:46:26,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:26,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:46:26,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:46:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-23 23:46:26,683 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:46:26,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:46:26,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:46:26,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:46:26,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:46:26,685 INFO L87 Difference]: Start difference. First operand 245691 states and 285104 transitions. Second operand 3 states. [2018-07-23 23:46:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:46:29,996 INFO L93 Difference]: Finished difference Result 482471 states and 560987 transitions. [2018-07-23 23:46:29,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:46:29,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-07-23 23:46:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:46:30,375 INFO L225 Difference]: With dead ends: 482471 [2018-07-23 23:46:30,375 INFO L226 Difference]: Without dead ends: 236782 [2018-07-23 23:46:30,471 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:46:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236782 states. [2018-07-23 23:46:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236782 to 236669. [2018-07-23 23:46:33,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236669 states. [2018-07-23 23:46:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236669 states to 236669 states and 270254 transitions. [2018-07-23 23:46:33,743 INFO L78 Accepts]: Start accepts. Automaton has 236669 states and 270254 transitions. Word has length 327 [2018-07-23 23:46:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:46:33,743 INFO L471 AbstractCegarLoop]: Abstraction has 236669 states and 270254 transitions. [2018-07-23 23:46:33,743 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:46:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 236669 states and 270254 transitions. [2018-07-23 23:46:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 23:46:33,769 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:46:33,770 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:46:33,770 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:46:33,770 INFO L82 PathProgramCache]: Analyzing trace with hash -5017920, now seen corresponding path program 1 times [2018-07-23 23:46:33,770 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:46:33,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:46:33,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:33,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:46:33,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:46:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-23 23:46:35,056 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:46:35,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:46:35,056 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:46:35,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:46:35,057 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:46:35,057 INFO L87 Difference]: Start difference. First operand 236669 states and 270254 transitions. Second operand 4 states. [2018-07-23 23:46:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:46:40,917 INFO L93 Difference]: Finished difference Result 722362 states and 822139 transitions. [2018-07-23 23:46:40,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:46:40,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 354 [2018-07-23 23:46:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:46:41,702 INFO L225 Difference]: With dead ends: 722362 [2018-07-23 23:46:41,702 INFO L226 Difference]: Without dead ends: 485695 [2018-07-23 23:46:41,860 INFO L573 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 [2018-07-23 23:46:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485695 states. [2018-07-23 23:46:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485695 to 323830. [2018-07-23 23:46:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323830 states. [2018-07-23 23:46:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323830 states to 323830 states and 359311 transitions. [2018-07-23 23:46:47,797 INFO L78 Accepts]: Start accepts. Automaton has 323830 states and 359311 transitions. Word has length 354 [2018-07-23 23:46:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:46:47,798 INFO L471 AbstractCegarLoop]: Abstraction has 323830 states and 359311 transitions. [2018-07-23 23:46:47,798 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:46:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 323830 states and 359311 transitions. [2018-07-23 23:46:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-07-23 23:46:47,826 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:46:47,826 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:46:47,827 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:46:47,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1868569371, now seen corresponding path program 1 times [2018-07-23 23:46:47,827 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:46:47,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:46:47,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:47,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:46:47,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:46:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:46:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-23 23:46:48,127 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:46:48,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 23:46:48,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 23:46:48,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 23:46:48,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:46:48,128 INFO L87 Difference]: Start difference. First operand 323830 states and 359311 transitions. Second operand 3 states. [2018-07-23 23:46:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:46:52,491 INFO L93 Difference]: Finished difference Result 886463 states and 980284 transitions. [2018-07-23 23:46:52,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 23:46:52,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 362 [2018-07-23 23:46:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:46:53,339 INFO L225 Difference]: With dead ends: 886463 [2018-07-23 23:46:53,340 INFO L226 Difference]: Without dead ends: 562635 [2018-07-23 23:46:53,565 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 23:46:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562635 states. [2018-07-23 23:47:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562635 to 562633. [2018-07-23 23:47:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562633 states. [2018-07-23 23:47:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562633 states to 562633 states and 617760 transitions. [2018-07-23 23:47:09,344 INFO L78 Accepts]: Start accepts. Automaton has 562633 states and 617760 transitions. Word has length 362 [2018-07-23 23:47:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:47:09,345 INFO L471 AbstractCegarLoop]: Abstraction has 562633 states and 617760 transitions. [2018-07-23 23:47:09,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 23:47:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 562633 states and 617760 transitions. [2018-07-23 23:47:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-23 23:47:09,399 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:47:09,400 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:47:09,400 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:47:09,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1785699946, now seen corresponding path program 1 times [2018-07-23 23:47:09,401 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:47:09,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:47:09,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:47:09,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:47:09,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:47:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:47:09,904 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-23 23:47:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 227 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:47:10,648 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:47:10,649 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:47:10,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:47:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:47:10,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:47:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:47:12,380 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:47:12,381 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-23 23:47:12,382 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-23 23:47:12,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-23 23:47:12,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-07-23 23:47:12,383 INFO L87 Difference]: Start difference. First operand 562633 states and 617760 transitions. Second operand 10 states. [2018-07-23 23:47:14,421 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-23 23:47:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:47:34,106 INFO L93 Difference]: Finished difference Result 1412079 states and 1547866 transitions. [2018-07-23 23:47:34,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-23 23:47:34,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 379 [2018-07-23 23:47:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:47:35,824 INFO L225 Difference]: With dead ends: 1412079 [2018-07-23 23:47:35,825 INFO L226 Difference]: Without dead ends: 849448 [2018-07-23 23:47:36,042 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=264, Invalid=606, Unknown=0, NotChecked=0, Total=870 [2018-07-23 23:47:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849448 states. [2018-07-23 23:47:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849448 to 834669. [2018-07-23 23:47:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834669 states. [2018-07-23 23:47:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834669 states to 834669 states and 909857 transitions. [2018-07-23 23:47:49,708 INFO L78 Accepts]: Start accepts. Automaton has 834669 states and 909857 transitions. Word has length 379 [2018-07-23 23:47:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:47:49,709 INFO L471 AbstractCegarLoop]: Abstraction has 834669 states and 909857 transitions. [2018-07-23 23:47:49,709 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-23 23:47:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 834669 states and 909857 transitions. [2018-07-23 23:47:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-07-23 23:47:49,772 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:47:49,772 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 23:47:49,773 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:47:49,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2110637568, now seen corresponding path program 1 times [2018-07-23 23:47:49,773 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-23 23:47:49,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-23 23:47:49,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:47:49,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:47:49,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:47:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:48:00,759 WARN L169 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-23 23:48:01,199 WARN L169 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-07-23 23:48:01,696 WARN L169 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-23 23:48:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 203 proven. 10 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-07-23 23:48:01,951 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:48:01,951 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 23:48:01,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:48:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:48:02,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 23:48:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-23 23:48:02,421 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:48:02,422 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-07-23 23:48:02,423 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-23 23:48:02,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-23 23:48:02,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-23 23:48:02,424 INFO L87 Difference]: Start difference. First operand 834669 states and 909857 transitions. Second operand 8 states. [2018-07-23 23:48:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:48:26,779 INFO L93 Difference]: Finished difference Result 3191411 states and 3464979 transitions. [2018-07-23 23:48:26,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-23 23:48:26,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 379 [2018-07-23 23:48:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:48:30,561 INFO L225 Difference]: With dead ends: 3191411 [2018-07-23 23:48:30,562 INFO L226 Difference]: Without dead ends: 2356744 [2018-07-23 23:48:30,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 Received shutdown request... [2018-07-23 23:48:34,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356744 states. [2018-07-23 23:48:34,105 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 23:48:34,108 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 23:48:34,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 11:48:34 BoogieIcfgContainer [2018-07-23 23:48:34,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 23:48:34,109 INFO L168 Benchmark]: Toolchain (without parser) took 203708.71 ms. Allocated memory was 1.5 GB in the beginning and 6.7 GB in the end (delta: 5.2 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 4.8 GB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,110 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 23:48:34,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1180.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 178.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,112 INFO L168 Benchmark]: Boogie Preprocessor took 393.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -938.2 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,113 INFO L168 Benchmark]: RCFGBuilder took 6784.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 289.4 MB). Peak memory consumption was 289.4 MB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,114 INFO L168 Benchmark]: TraceAbstraction took 195164.65 ms. Allocated memory was 2.3 GB in the beginning and 6.7 GB in the end (delta: 4.4 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -914.3 MB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. [2018-07-23 23:48:34,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1180.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 178.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 393.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -938.2 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6784.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 289.4 MB). Peak memory consumption was 289.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195164.65 ms. Allocated memory was 2.3 GB in the beginning and 6.7 GB in the end (delta: 4.4 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -914.3 MB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1500]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1500). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 195.0s OverallTime, 19 OverallIterations, 5 TraceHistogramMax, 109.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4696 SDtfs, 17338 SDslu, 4469 SDs, 0 SdLazy, 23620 SolverSat, 5150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 883 GetRequests, 806 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=834669occurred in iteration=18, 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: 63.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 215480 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 5634 NumberOfCodeBlocks, 5634 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 5613 ConstructedInterpolants, 0 QuantifiedInterpolants, 5223152 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1262 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 21 InterpolantComputations, 19 PerfectInterpolantSequences, 3150/3239 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label13_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_23-48-34-132.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label13_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_23-48-34-132.csv Completed graceful shutdown