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/Problem18_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 01:06:47,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 01:06:47,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 01:06:47,446 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 01:06:47,446 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 01:06:47,447 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 01:06:47,449 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 01:06:47,450 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 01:06:47,452 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 01:06:47,453 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 01:06:47,454 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 01:06:47,454 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 01:06:47,455 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 01:06:47,456 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 01:06:47,457 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 01:06:47,458 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 01:06:47,459 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 01:06:47,461 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 01:06:47,463 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 01:06:47,465 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 01:06:47,469 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 01:06:47,470 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 01:06:47,473 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 01:06:47,473 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 01:06:47,473 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 01:06:47,474 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 01:06:47,475 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 01:06:47,476 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 01:06:47,477 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 01:06:47,478 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 01:06:47,478 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 01:06:47,479 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 01:06:47,482 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 01:06:47,498 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 01:06:47,499 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 01:06:47,500 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 01:06:47,500 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 01:06:47,500 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 01:06:47,501 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 01:06:47,501 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 01:06:47,501 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 01:06:47,501 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 01:06:47,501 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 01:06:47,502 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 01:06:47,502 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 01:06:47,502 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 01:06:47,502 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 01:06:47,503 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 01:06:47,503 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 01:06:47,503 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 01:06:47,503 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 01:06:47,503 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 01:06:47,504 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 01:06:47,504 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 01:06:47,504 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 01:06:47,504 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 01:06:47,504 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 01:06:47,505 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 01:06:47,505 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 01:06:47,505 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 01:06:47,505 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 01:06:47,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 01:06:47,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 01:06:47,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 01:06:47,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 01:06:47,609 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 01:06:47,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-07-24 01:06:47,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d063a9a2/2033fe33039a446584c6fb8c2dc0319d/FLAG11dd9c02a [2018-07-24 01:06:48,404 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 01:06:48,405 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-07-24 01:06:48,433 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d063a9a2/2033fe33039a446584c6fb8c2dc0319d/FLAG11dd9c02a [2018-07-24 01:06:48,449 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d063a9a2/2033fe33039a446584c6fb8c2dc0319d [2018-07-24 01:06:48,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 01:06:48,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 01:06:48,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 01:06:48,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 01:06:48,472 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 01:06:48,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:06:48" (1/1) ... [2018-07-24 01:06:48,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e286a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:48, skipping insertion in model container [2018-07-24 01:06:48,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:06:48" (1/1) ... [2018-07-24 01:06:48,811 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 01:06:49,658 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:06:49,680 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 01:06:50,271 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:06:50,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50 WrapperNode [2018-07-24 01:06:50,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 01:06:50,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 01:06:50,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 01:06:50,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 01:06:50,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:50,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:50,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 01:06:50,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 01:06:50,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 01:06:50,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 01:06:51,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... [2018-07-24 01:06:51,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 01:06:51,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 01:06:51,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 01:06:51,406 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 01:06:51,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 01:06:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 01:06:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 01:06:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 01:06:58,944 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 01:06:58,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:06:58 BoogieIcfgContainer [2018-07-24 01:06:58,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 01:06:58,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 01:06:58,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 01:06:58,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 01:06:58,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:06:48" (1/3) ... [2018-07-24 01:06:58,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b388598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:06:58, skipping insertion in model container [2018-07-24 01:06:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:06:50" (2/3) ... [2018-07-24 01:06:58,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b388598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:06:58, skipping insertion in model container [2018-07-24 01:06:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:06:58" (3/3) ... [2018-07-24 01:06:58,959 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label12_false-unreach-call.c [2018-07-24 01:06:58,969 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 01:06:58,981 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 01:06:59,041 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 01:06:59,041 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 01:06:59,042 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 01:06:59,042 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 01:06:59,042 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 01:06:59,042 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 01:06:59,042 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 01:06:59,043 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 01:06:59,043 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 01:06:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-07-24 01:06:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-24 01:06:59,083 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:06:59,084 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:06:59,084 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:06:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 670581594, now seen corresponding path program 1 times [2018-07-24 01:06:59,091 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:06:59,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:06:59,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:06:59,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:06:59,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:06:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:06:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:06:59,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:06:59,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:06:59,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:06:59,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:06:59,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:06:59,458 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-07-24 01:07:10,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:07:10,021 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-07-24 01:07:10,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:07:10,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-07-24 01:07:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:07:10,063 INFO L225 Difference]: With dead ends: 2918 [2018-07-24 01:07:10,064 INFO L226 Difference]: Without dead ends: 2153 [2018-07-24 01:07:10,078 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:07:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-07-24 01:07:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-07-24 01:07:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-07-24 01:07:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3448 transitions. [2018-07-24 01:07:10,243 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3448 transitions. Word has length 18 [2018-07-24 01:07:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:07:10,243 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 3448 transitions. [2018-07-24 01:07:10,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:07:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3448 transitions. [2018-07-24 01:07:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-24 01:07:10,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:07:10,248 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 01:07:10,248 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:07:10,248 INFO L82 PathProgramCache]: Analyzing trace with hash -216423638, now seen corresponding path program 1 times [2018-07-24 01:07:10,249 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:07:10,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:07:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:10,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:07:10,612 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:07:10,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:07:10,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:07:10,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:07:10,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:07:10,615 INFO L87 Difference]: Start difference. First operand 2153 states and 3448 transitions. Second operand 4 states. [2018-07-24 01:07:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:07:16,456 INFO L93 Difference]: Finished difference Result 6377 states and 10263 transitions. [2018-07-24 01:07:16,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:07:16,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2018-07-24 01:07:16,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:07:16,479 INFO L225 Difference]: With dead ends: 6377 [2018-07-24 01:07:16,479 INFO L226 Difference]: Without dead ends: 4226 [2018-07-24 01:07:16,484 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:07:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-07-24 01:07:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-07-24 01:07:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-07-24 01:07:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5833 transitions. [2018-07-24 01:07:16,561 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5833 transitions. Word has length 84 [2018-07-24 01:07:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:07:16,562 INFO L471 AbstractCegarLoop]: Abstraction has 4226 states and 5833 transitions. [2018-07-24 01:07:16,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:07:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5833 transitions. [2018-07-24 01:07:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-24 01:07:16,575 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:07:16,575 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:07:16,575 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:07:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2073143470, now seen corresponding path program 1 times [2018-07-24 01:07:16,576 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:07:16,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:07:16,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:16,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:16,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:17,635 WARN L169 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-07-24 01:07:17,844 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-07-24 01:07:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 01:07:17,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:07:17,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:07:17,987 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 01:07:17,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 01:07:17,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:07:17,988 INFO L87 Difference]: Start difference. First operand 4226 states and 5833 transitions. Second operand 5 states. [2018-07-24 01:07:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:07:27,369 INFO L93 Difference]: Finished difference Result 15360 states and 20468 transitions. [2018-07-24 01:07:27,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 01:07:27,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2018-07-24 01:07:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:07:27,427 INFO L225 Difference]: With dead ends: 15360 [2018-07-24 01:07:27,427 INFO L226 Difference]: Without dead ends: 11136 [2018-07-24 01:07:27,435 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:07:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-07-24 01:07:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10445. [2018-07-24 01:07:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10445 states. [2018-07-24 01:07:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10445 states to 10445 states and 12444 transitions. [2018-07-24 01:07:27,643 INFO L78 Accepts]: Start accepts. Automaton has 10445 states and 12444 transitions. Word has length 203 [2018-07-24 01:07:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:07:27,644 INFO L471 AbstractCegarLoop]: Abstraction has 10445 states and 12444 transitions. [2018-07-24 01:07:27,644 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 01:07:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 10445 states and 12444 transitions. [2018-07-24 01:07:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-24 01:07:27,660 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:07:27,660 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:07:27,661 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:07:27,661 INFO L82 PathProgramCache]: Analyzing trace with hash -315241782, now seen corresponding path program 1 times [2018-07-24 01:07:27,661 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:07:27,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:07:27,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:27,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:27,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 262 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 01:07:28,223 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:07:28,223 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:07:28,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:28,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:07:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-24 01:07:28,571 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:07:28,571 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 01:07:28,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:07:28,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:07:28,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:07:28,574 INFO L87 Difference]: Start difference. First operand 10445 states and 12444 transitions. Second operand 6 states. [2018-07-24 01:07:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:07:40,680 INFO L93 Difference]: Finished difference Result 31269 states and 37248 transitions. [2018-07-24 01:07:40,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 01:07:40,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 386 [2018-07-24 01:07:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:07:40,752 INFO L225 Difference]: With dead ends: 31269 [2018-07-24 01:07:40,752 INFO L226 Difference]: Without dead ends: 18750 [2018-07-24 01:07:40,767 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-07-24 01:07:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18750 states. [2018-07-24 01:07:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18750 to 13883. [2018-07-24 01:07:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2018-07-24 01:07:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 15539 transitions. [2018-07-24 01:07:41,011 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 15539 transitions. Word has length 386 [2018-07-24 01:07:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:07:41,012 INFO L471 AbstractCegarLoop]: Abstraction has 13883 states and 15539 transitions. [2018-07-24 01:07:41,012 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:07:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 15539 transitions. [2018-07-24 01:07:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-24 01:07:41,019 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:07:41,019 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:07:41,019 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:07:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1591517647, now seen corresponding path program 1 times [2018-07-24 01:07:41,020 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:07:41,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:07:41,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:41,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:41,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 01:07:41,684 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:07:41,684 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:07:41,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:41,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:07:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 01:07:41,969 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:07:41,969 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-07-24 01:07:41,970 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 01:07:41,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 01:07:41,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 01:07:41,971 INFO L87 Difference]: Start difference. First operand 13883 states and 15539 transitions. Second operand 7 states. [2018-07-24 01:07:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:07:54,546 INFO L93 Difference]: Finished difference Result 51951 states and 59651 transitions. [2018-07-24 01:07:54,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 01:07:54,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2018-07-24 01:07:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:07:54,614 INFO L225 Difference]: With dead ends: 51951 [2018-07-24 01:07:54,614 INFO L226 Difference]: Without dead ends: 38070 [2018-07-24 01:07:54,632 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 394 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:07:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38070 states. [2018-07-24 01:07:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38070 to 36686. [2018-07-24 01:07:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36686 states. [2018-07-24 01:07:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36686 states to 36686 states and 41350 transitions. [2018-07-24 01:07:55,103 INFO L78 Accepts]: Start accepts. Automaton has 36686 states and 41350 transitions. Word has length 391 [2018-07-24 01:07:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:07:55,103 INFO L471 AbstractCegarLoop]: Abstraction has 36686 states and 41350 transitions. [2018-07-24 01:07:55,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 01:07:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 36686 states and 41350 transitions. [2018-07-24 01:07:55,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1224 [2018-07-24 01:07:55,159 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:07:55,160 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:07:55,160 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:07:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -724843585, now seen corresponding path program 1 times [2018-07-24 01:07:55,161 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:07:55,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:07:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:55,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:07:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:07:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:07:56,797 WARN L169 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-07-24 01:07:57,227 WARN L169 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-07-24 01:08:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 778 proven. 268 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-07-24 01:08:00,508 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:08:00,509 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:08:00,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:00,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:08:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1632 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-07-24 01:08:02,147 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:08:02,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 10 [2018-07-24 01:08:02,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 01:08:02,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 01:08:02,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-24 01:08:02,150 INFO L87 Difference]: Start difference. First operand 36686 states and 41350 transitions. Second operand 11 states. [2018-07-24 01:08:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:08:12,188 INFO L93 Difference]: Finished difference Result 82171 states and 92486 transitions. [2018-07-24 01:08:12,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 01:08:12,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1223 [2018-07-24 01:08:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:08:12,250 INFO L225 Difference]: With dead ends: 82171 [2018-07-24 01:08:12,250 INFO L226 Difference]: Without dead ends: 46178 [2018-07-24 01:08:12,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-07-24 01:08:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46178 states. [2018-07-24 01:08:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46178 to 44978. [2018-07-24 01:08:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44978 states. [2018-07-24 01:08:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44978 states to 44978 states and 49820 transitions. [2018-07-24 01:08:12,824 INFO L78 Accepts]: Start accepts. Automaton has 44978 states and 49820 transitions. Word has length 1223 [2018-07-24 01:08:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:08:12,826 INFO L471 AbstractCegarLoop]: Abstraction has 44978 states and 49820 transitions. [2018-07-24 01:08:12,826 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 01:08:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 44978 states and 49820 transitions. [2018-07-24 01:08:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2018-07-24 01:08:12,857 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:08:12,858 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:08:12,859 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:08:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1227749943, now seen corresponding path program 1 times [2018-07-24 01:08:12,863 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:08:12,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:08:12,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:12,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:12,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-07-24 01:08:14,522 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:08:14,523 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:08:14,524 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:08:14,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:08:14,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:14,524 INFO L87 Difference]: Start difference. First operand 44978 states and 49820 transitions. Second operand 4 states. [2018-07-24 01:08:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:08:20,913 INFO L93 Difference]: Finished difference Result 118976 states and 132546 transitions. [2018-07-24 01:08:20,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:08:20,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1254 [2018-07-24 01:08:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:08:20,993 INFO L225 Difference]: With dead ends: 118976 [2018-07-24 01:08:20,993 INFO L226 Difference]: Without dead ends: 74691 [2018-07-24 01:08:21,024 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 [2018-07-24 01:08:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74691 states. [2018-07-24 01:08:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74691 to 74000. [2018-07-24 01:08:21,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74000 states. [2018-07-24 01:08:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74000 states to 74000 states and 80866 transitions. [2018-07-24 01:08:21,849 INFO L78 Accepts]: Start accepts. Automaton has 74000 states and 80866 transitions. Word has length 1254 [2018-07-24 01:08:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:08:21,851 INFO L471 AbstractCegarLoop]: Abstraction has 74000 states and 80866 transitions. [2018-07-24 01:08:21,851 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:08:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 74000 states and 80866 transitions. [2018-07-24 01:08:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2018-07-24 01:08:21,877 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:08:21,879 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:08:21,879 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:08:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1135443809, now seen corresponding path program 1 times [2018-07-24 01:08:21,880 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:08:21,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:08:21,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:21,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:21,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-07-24 01:08:23,684 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:08:23,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:08:23,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:08:23,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:08:23,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:23,685 INFO L87 Difference]: Start difference. First operand 74000 states and 80866 transitions. Second operand 4 states. [2018-07-24 01:08:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:08:29,429 INFO L93 Difference]: Finished difference Result 158363 states and 173289 transitions. [2018-07-24 01:08:29,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:08:29,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1258 [2018-07-24 01:08:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:08:29,544 INFO L225 Difference]: With dead ends: 158363 [2018-07-24 01:08:29,544 INFO L226 Difference]: Without dead ends: 85056 [2018-07-24 01:08:29,584 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85056 states. [2018-07-24 01:08:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85056 to 83674. [2018-07-24 01:08:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83674 states. [2018-07-24 01:08:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83674 states to 83674 states and 90814 transitions. [2018-07-24 01:08:30,445 INFO L78 Accepts]: Start accepts. Automaton has 83674 states and 90814 transitions. Word has length 1258 [2018-07-24 01:08:30,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:08:30,448 INFO L471 AbstractCegarLoop]: Abstraction has 83674 states and 90814 transitions. [2018-07-24 01:08:30,448 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:08:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 83674 states and 90814 transitions. [2018-07-24 01:08:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1316 [2018-07-24 01:08:30,488 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:08:30,489 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:08:30,489 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:08:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1845343236, now seen corresponding path program 1 times [2018-07-24 01:08:30,490 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:08:30,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:08:30,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:30,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:30,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 1616 trivial. 0 not checked. [2018-07-24 01:08:32,672 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:08:32,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:08:32,673 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:08:32,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:08:32,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:32,673 INFO L87 Difference]: Start difference. First operand 83674 states and 90814 transitions. Second operand 4 states. [2018-07-24 01:08:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:08:38,192 INFO L93 Difference]: Finished difference Result 177020 states and 192774 transitions. [2018-07-24 01:08:38,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:08:38,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1315 [2018-07-24 01:08:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:08:38,292 INFO L225 Difference]: With dead ends: 177020 [2018-07-24 01:08:38,292 INFO L226 Difference]: Without dead ends: 92654 [2018-07-24 01:08:38,338 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92654 states. [2018-07-24 01:08:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92654 to 91963. [2018-07-24 01:08:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91963 states. [2018-07-24 01:08:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91963 states to 91963 states and 98175 transitions. [2018-07-24 01:08:39,090 INFO L78 Accepts]: Start accepts. Automaton has 91963 states and 98175 transitions. Word has length 1315 [2018-07-24 01:08:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:08:39,092 INFO L471 AbstractCegarLoop]: Abstraction has 91963 states and 98175 transitions. [2018-07-24 01:08:39,092 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:08:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 91963 states and 98175 transitions. [2018-07-24 01:08:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2018-07-24 01:08:39,129 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:08:39,130 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:08:39,131 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:08:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1344537573, now seen corresponding path program 1 times [2018-07-24 01:08:39,131 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:08:39,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:08:39,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:39,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:39,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2018-07-24 01:08:41,029 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:08:41,030 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:08:41,030 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:08:41,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:08:41,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:08:41,031 INFO L87 Difference]: Start difference. First operand 91963 states and 98175 transitions. Second operand 4 states. [2018-07-24 01:08:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:08:46,456 INFO L93 Difference]: Finished difference Result 206036 states and 219777 transitions. [2018-07-24 01:08:46,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:08:46,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1346 [2018-07-24 01:08:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:08:46,581 INFO L225 Difference]: With dead ends: 206036 [2018-07-24 01:08:46,582 INFO L226 Difference]: Without dead ends: 105767 [2018-07-24 01:08:46,624 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 [2018-07-24 01:08:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105767 states. [2018-07-24 01:08:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105767 to 105767. [2018-07-24 01:08:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105767 states. [2018-07-24 01:08:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105767 states to 105767 states and 109941 transitions. [2018-07-24 01:08:47,405 INFO L78 Accepts]: Start accepts. Automaton has 105767 states and 109941 transitions. Word has length 1346 [2018-07-24 01:08:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:08:47,406 INFO L471 AbstractCegarLoop]: Abstraction has 105767 states and 109941 transitions. [2018-07-24 01:08:47,406 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:08:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 105767 states and 109941 transitions. [2018-07-24 01:08:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1362 [2018-07-24 01:08:47,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:08:47,432 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:08:47,433 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:08:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1213643359, now seen corresponding path program 1 times [2018-07-24 01:08:47,433 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:08:47,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:08:47,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:47,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:47,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:08:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:48,755 WARN L169 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-07-24 01:08:49,178 WARN L169 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-07-24 01:08:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 1673 proven. 268 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2018-07-24 01:08:53,341 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:08:53,341 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:08:53,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:08:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:08:53,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:08:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 1432 proven. 0 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Forcibly destroying the process [2018-07-24 01:08:55,951 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:08:55,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2018-07-24 01:08:55,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 01:08:55,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 01:08:55,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-07-24 01:08:55,954 INFO L87 Difference]: Start difference. First operand 105767 states and 109941 transitions. Second operand 14 states. [2018-07-24 01:09:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:09:13,756 INFO L93 Difference]: Finished difference Result 212730 states and 221086 transitions. [2018-07-24 01:09:13,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 01:09:13,757 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1361 [2018-07-24 01:09:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:09:13,860 INFO L225 Difference]: With dead ends: 212730 [2018-07-24 01:09:13,860 INFO L226 Difference]: Without dead ends: 92424 [2018-07-24 01:09:13,908 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1360 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2018-07-24 01:09:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92424 states. [2018-07-24 01:09:14,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92424 to 90535. [2018-07-24 01:09:14,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90535 states. [2018-07-24 01:09:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90535 states to 90535 states and 93598 transitions. [2018-07-24 01:09:14,641 INFO L78 Accepts]: Start accepts. Automaton has 90535 states and 93598 transitions. Word has length 1361 [2018-07-24 01:09:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:09:14,641 INFO L471 AbstractCegarLoop]: Abstraction has 90535 states and 93598 transitions. [2018-07-24 01:09:14,642 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 01:09:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 90535 states and 93598 transitions. [2018-07-24 01:09:14,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1420 [2018-07-24 01:09:14,664 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:09:14,665 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:09:14,666 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:09:14,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1975722265, now seen corresponding path program 1 times [2018-07-24 01:09:14,666 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:09:14,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:09:14,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:14,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:09:14,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:09:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2018-07-24 01:09:17,099 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:09:17,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:09:17,100 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:09:17,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:09:17,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:09:17,100 INFO L87 Difference]: Start difference. First operand 90535 states and 93598 transitions. Second operand 3 states. [2018-07-24 01:09:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:09:20,512 INFO L93 Difference]: Finished difference Result 178300 states and 184408 transitions. [2018-07-24 01:09:20,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:09:20,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1419 [2018-07-24 01:09:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:09:20,606 INFO L225 Difference]: With dead ends: 178300 [2018-07-24 01:09:20,607 INFO L226 Difference]: Without dead ends: 88458 [2018-07-24 01:09:20,650 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:09:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88458 states. [2018-07-24 01:09:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88458 to 88458. [2018-07-24 01:09:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88458 states. [2018-07-24 01:09:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88458 states to 88458 states and 91206 transitions. [2018-07-24 01:09:21,546 INFO L78 Accepts]: Start accepts. Automaton has 88458 states and 91206 transitions. Word has length 1419 [2018-07-24 01:09:21,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:09:21,547 INFO L471 AbstractCegarLoop]: Abstraction has 88458 states and 91206 transitions. [2018-07-24 01:09:21,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:09:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 88458 states and 91206 transitions. [2018-07-24 01:09:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2018-07-24 01:09:21,577 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:09:21,578 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:09:21,578 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:09:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash -669500776, now seen corresponding path program 1 times [2018-07-24 01:09:21,579 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:09:21,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:09:21,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:21,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:09:21,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:09:23,116 WARN L169 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-24 01:09:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2955 backedges. 1930 proven. 0 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2018-07-24 01:09:24,423 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:09:24,423 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:09:24,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:09:24,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:09:24,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:09:24,425 INFO L87 Difference]: Start difference. First operand 88458 states and 91206 transitions. Second operand 4 states. [2018-07-24 01:09:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:09:32,144 INFO L93 Difference]: Finished difference Result 178296 states and 183799 transitions. [2018-07-24 01:09:32,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:09:32,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1558 [2018-07-24 01:09:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:09:32,233 INFO L225 Difference]: With dead ends: 178296 [2018-07-24 01:09:32,233 INFO L226 Difference]: Without dead ends: 90531 [2018-07-24 01:09:32,273 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:09:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90531 states. [2018-07-24 01:09:32,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90531 to 87767. [2018-07-24 01:09:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87767 states. [2018-07-24 01:09:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87767 states to 87767 states and 89953 transitions. [2018-07-24 01:09:32,937 INFO L78 Accepts]: Start accepts. Automaton has 87767 states and 89953 transitions. Word has length 1558 [2018-07-24 01:09:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:09:32,938 INFO L471 AbstractCegarLoop]: Abstraction has 87767 states and 89953 transitions. [2018-07-24 01:09:32,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:09:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 87767 states and 89953 transitions. [2018-07-24 01:09:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2018-07-24 01:09:32,977 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:09:32,978 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:09:32,978 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:09:32,979 INFO L82 PathProgramCache]: Analyzing trace with hash 189539286, now seen corresponding path program 1 times [2018-07-24 01:09:32,979 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:09:32,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:09:32,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:32,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:09:32,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:09:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4302 backedges. 2326 proven. 0 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2018-07-24 01:09:35,772 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:09:35,772 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:09:35,773 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:09:35,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:09:35,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:09:35,774 INFO L87 Difference]: Start difference. First operand 87767 states and 89953 transitions. Second operand 3 states. [2018-07-24 01:09:39,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:09:39,159 INFO L93 Difference]: Finished difference Result 185895 states and 190774 transitions. [2018-07-24 01:09:39,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:09:39,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1672 [2018-07-24 01:09:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:09:39,255 INFO L225 Difference]: With dead ends: 185895 [2018-07-24 01:09:39,256 INFO L226 Difference]: Without dead ends: 98821 [2018-07-24 01:09:39,300 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:09:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98821 states. [2018-07-24 01:09:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98821 to 96748. [2018-07-24 01:09:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96748 states. [2018-07-24 01:09:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96748 states to 96748 states and 99055 transitions. [2018-07-24 01:09:40,208 INFO L78 Accepts]: Start accepts. Automaton has 96748 states and 99055 transitions. Word has length 1672 [2018-07-24 01:09:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:09:40,209 INFO L471 AbstractCegarLoop]: Abstraction has 96748 states and 99055 transitions. [2018-07-24 01:09:40,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:09:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 96748 states and 99055 transitions. [2018-07-24 01:09:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2018-07-24 01:09:40,265 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:09:40,266 INFO L353 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:09:40,266 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:09:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1245344693, now seen corresponding path program 1 times [2018-07-24 01:09:40,267 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:09:40,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:09:40,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:40,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:09:40,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:09:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:09:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4735 backedges. 2301 proven. 977 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2018-07-24 01:09:45,127 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:09:45,127 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:09:45,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:09:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:09:45,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:09:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4735 backedges. 2475 proven. 0 refuted. 0 times theorem prover too weak. 2260 trivial. 0 not checked. [2018-07-24 01:09:46,716 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:09:46,717 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-07-24 01:09:46,718 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 01:09:46,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 01:09:46,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:09:46,719 INFO L87 Difference]: Start difference. First operand 96748 states and 99055 transitions. Second operand 10 states. [2018-07-24 01:10:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:10:03,778 INFO L93 Difference]: Finished difference Result 318919 states and 326601 transitions. [2018-07-24 01:10:03,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 01:10:03,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1722 [2018-07-24 01:10:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:10:04,022 INFO L225 Difference]: With dead ends: 318919 [2018-07-24 01:10:04,022 INFO L226 Difference]: Without dead ends: 222864 [2018-07-24 01:10:04,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1756 GetRequests, 1734 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2018-07-24 01:10:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222864 states. [2018-07-24 01:10:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222864 to 95366. [2018-07-24 01:10:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95366 states. [2018-07-24 01:10:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95366 states to 95366 states and 97052 transitions. [2018-07-24 01:10:06,203 INFO L78 Accepts]: Start accepts. Automaton has 95366 states and 97052 transitions. Word has length 1722 [2018-07-24 01:10:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:10:06,204 INFO L471 AbstractCegarLoop]: Abstraction has 95366 states and 97052 transitions. [2018-07-24 01:10:06,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 01:10:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 95366 states and 97052 transitions. [2018-07-24 01:10:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1746 [2018-07-24 01:10:06,248 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:10:06,249 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:10:06,250 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:10:06,250 INFO L82 PathProgramCache]: Analyzing trace with hash -390091887, now seen corresponding path program 1 times [2018-07-24 01:10:06,251 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:10:06,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:10:06,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:06,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:10:06,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:10:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 2578 proven. 249 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-07-24 01:10:09,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:10:09,153 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:10:09,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:10:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:10:09,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:10:10,157 WARN L169 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 23 [2018-07-24 01:10:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3529 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 2867 trivial. 0 not checked. [2018-07-24 01:10:12,838 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:10:12,839 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-07-24 01:10:12,840 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:10:12,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:10:12,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:10:12,841 INFO L87 Difference]: Start difference. First operand 95366 states and 97052 transitions. Second operand 6 states. [2018-07-24 01:10:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:10:27,383 INFO L93 Difference]: Finished difference Result 219752 states and 223875 transitions. [2018-07-24 01:10:27,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 01:10:27,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1745 [2018-07-24 01:10:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:10:27,506 INFO L225 Difference]: With dead ends: 219752 [2018-07-24 01:10:27,506 INFO L226 Difference]: Without dead ends: 124387 [2018-07-24 01:10:27,532 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1751 GetRequests, 1746 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 01:10:27,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124387 states. [2018-07-24 01:10:28,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124387 to 111258. [2018-07-24 01:10:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111258 states. [2018-07-24 01:10:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111258 states to 111258 states and 113110 transitions. [2018-07-24 01:10:28,597 INFO L78 Accepts]: Start accepts. Automaton has 111258 states and 113110 transitions. Word has length 1745 [2018-07-24 01:10:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:10:28,598 INFO L471 AbstractCegarLoop]: Abstraction has 111258 states and 113110 transitions. [2018-07-24 01:10:28,598 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:10:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 111258 states and 113110 transitions. [2018-07-24 01:10:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1771 [2018-07-24 01:10:28,635 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:10:28,636 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:10:28,637 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:10:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash 118170211, now seen corresponding path program 1 times [2018-07-24 01:10:28,637 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:10:28,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:10:28,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:28,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:10:28,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:10:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:10:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1776 proven. 1192 refuted. 0 times theorem prover too weak. 1025 trivial. 0 not checked. [2018-07-24 01:10:32,431 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:10:32,431 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 01:10:32,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:10:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:10:32,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:10:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 770 proven. 0 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2018-07-24 01:10:34,712 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:10:34,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-07-24 01:10:34,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 01:10:34,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 01:10:34,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 01:10:34,716 INFO L87 Difference]: Start difference. First operand 111258 states and 113110 transitions. Second operand 8 states. Received shutdown request... [2018-07-24 01:10:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:10:36,117 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 01:10:36,128 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 01:10:36,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:10:36 BoogieIcfgContainer [2018-07-24 01:10:36,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 01:10:36,131 INFO L168 Benchmark]: Toolchain (without parser) took 227669.74 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -706.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,133 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 01:10:36,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1965.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,140 INFO L168 Benchmark]: Boogie Preprocessor took 693.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,141 INFO L168 Benchmark]: RCFGBuilder took 7540.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 568.3 MB). Peak memory consumption was 568.3 MB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,143 INFO L168 Benchmark]: TraceAbstraction took 217181.93 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -390.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 01:10:36,152 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1965.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 693.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 108.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7540.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 568.3 MB). Peak memory consumption was 568.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217181.93 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -390.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (111258states) and interpolant automaton (currently 3 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (498 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 217.0s OverallTime, 17 OverallIterations, 11 TraceHistogramMax, 150.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6635 SDtfs, 53130 SDslu, 1696 SDs, 0 SdLazy, 94731 SolverSat, 15524 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 118.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8749 GetRequests, 8633 SyntacticMatches, 23 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111258occurred in iteration=16, 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: 11.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 158259 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 27323 NumberOfCodeBlocks, 27323 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 27299 ConstructedInterpolants, 92 QuantifiedInterpolants, 105762211 SizeOfPredicates, 1 NumberOfNonLiveVariables, 10022 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 24 InterpolantComputations, 17 PerfectInterpolantSequences, 47207/50181 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/Problem18_label12_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_01-10-36-179.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label12_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_01-10-36-179.csv Completed graceful shutdown