java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 03:02:05,510 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 03:02:05,513 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 03:02:05,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 03:02:05,533 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 03:02:05,534 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 03:02:05,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 03:02:05,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 03:02:05,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 03:02:05,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 03:02:05,541 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 03:02:05,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 03:02:05,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 03:02:05,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 03:02:05,544 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 03:02:05,545 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 03:02:05,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 03:02:05,547 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 03:02:05,549 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 03:02:05,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 03:02:05,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 03:02:05,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 03:02:05,565 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 03:02:05,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 03:02:05,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 03:02:05,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 03:02:05,567 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 03:02:05,574 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 03:02:05,575 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 03:02:05,576 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 03:02:05,576 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 03:02:05,577 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-22 03:02:05,579 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 03:02:05,604 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 03:02:05,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 03:02:05,605 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 03:02:05,606 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 03:02:05,606 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 03:02:05,606 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 03:02:05,607 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 03:02:05,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 03:02:05,607 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 03:02:05,607 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 03:02:05,608 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 03:02:05,608 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 03:02:05,608 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 03:02:05,608 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 03:02:05,608 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 03:02:05,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 03:02:05,609 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 03:02:05,609 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 03:02:05,609 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 03:02:05,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 03:02:05,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 03:02:05,611 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 03:02:05,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 03:02:05,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 03:02:05,612 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 03:02:05,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 03:02:05,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 03:02:05,612 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 03:02:05,612 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 03:02:05,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 03:02:05,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 03:02:05,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 03:02:05,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 03:02:05,688 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 03:02:05,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-07-22 03:02:06,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0bae86c/3c92afa1f84f4077bbe090205faad9b5/FLAG30267fcc2 [2018-07-22 03:02:06,650 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 03:02:06,651 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-07-22 03:02:06,716 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0bae86c/3c92afa1f84f4077bbe090205faad9b5/FLAG30267fcc2 [2018-07-22 03:02:06,735 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9b0bae86c/3c92afa1f84f4077bbe090205faad9b5 [2018-07-22 03:02:06,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 03:02:06,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 03:02:06,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 03:02:06,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 03:02:06,765 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 03:02:06,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:02:06" (1/1) ... [2018-07-22 03:02:06,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cf718a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:06, skipping insertion in model container [2018-07-22 03:02:06,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:02:06" (1/1) ... [2018-07-22 03:02:07,219 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 03:02:08,592 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:02:08,617 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 03:02:09,646 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:02:09,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09 WrapperNode [2018-07-22 03:02:09,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 03:02:09,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 03:02:09,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 03:02:09,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 03:02:09,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:10,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:10,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 03:02:10,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 03:02:10,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 03:02:10,841 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 03:02:10,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:10,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... [2018-07-22 03:02:12,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 03:02:12,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 03:02:12,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 03:02:12,363 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 03:02:12,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 03:02:12,429 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 03:02:12,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 03:02:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 03:02:24,959 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 03:02:24,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:02:24 BoogieIcfgContainer [2018-07-22 03:02:24,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 03:02:24,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 03:02:24,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 03:02:24,964 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 03:02:24,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:02:06" (1/3) ... [2018-07-22 03:02:24,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d607129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:02:24, skipping insertion in model container [2018-07-22 03:02:24,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:02:09" (2/3) ... [2018-07-22 03:02:24,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d607129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:02:24, skipping insertion in model container [2018-07-22 03:02:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:02:24" (3/3) ... [2018-07-22 03:02:24,968 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-07-22 03:02:24,981 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 03:02:24,993 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 03:02:25,060 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 03:02:25,061 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 03:02:25,061 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 03:02:25,061 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 03:02:25,061 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 03:02:25,062 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 03:02:25,062 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 03:02:25,062 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 03:02:25,062 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 03:02:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 03:02:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-22 03:02:25,115 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:25,116 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:02:25,116 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -643220670, now seen corresponding path program 1 times [2018-07-22 03:02:25,121 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:25,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:25,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:25,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:25,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:02:25,471 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:25,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:02:25,542 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:02:25,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:02:25,559 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:25,561 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-22 03:02:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:36,967 INFO L93 Difference]: Finished difference Result 3866 states and 7262 transitions. [2018-07-22 03:02:36,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:02:36,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-07-22 03:02:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:37,005 INFO L225 Difference]: With dead ends: 3866 [2018-07-22 03:02:37,005 INFO L226 Difference]: Without dead ends: 2760 [2018-07-22 03:02:37,017 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:37,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2018-07-22 03:02:37,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2741. [2018-07-22 03:02:37,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2018-07-22 03:02:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4467 transitions. [2018-07-22 03:02:37,207 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4467 transitions. Word has length 12 [2018-07-22 03:02:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:37,208 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4467 transitions. [2018-07-22 03:02:37,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:02:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4467 transitions. [2018-07-22 03:02:37,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-07-22 03:02:37,211 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:37,211 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 03:02:37,212 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 726651950, now seen corresponding path program 1 times [2018-07-22 03:02:37,212 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:37,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:37,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:37,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:37,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:37,873 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-07-22 03:02:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:02:37,947 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:37,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:02:37,950 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:02:37,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:02:37,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:02:37,950 INFO L87 Difference]: Start difference. First operand 2741 states and 4467 transitions. Second operand 5 states. [2018-07-22 03:02:53,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:53,872 INFO L93 Difference]: Finished difference Result 9437 states and 14864 transitions. [2018-07-22 03:02:53,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:02:53,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-07-22 03:02:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:53,907 INFO L225 Difference]: With dead ends: 9437 [2018-07-22 03:02:53,907 INFO L226 Difference]: Without dead ends: 6698 [2018-07-22 03:02:53,913 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:02:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2018-07-22 03:02:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 6697. [2018-07-22 03:02:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6697 states. [2018-07-22 03:02:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9386 transitions. [2018-07-22 03:02:54,101 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9386 transitions. Word has length 85 [2018-07-22 03:02:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:54,102 INFO L471 AbstractCegarLoop]: Abstraction has 6697 states and 9386 transitions. [2018-07-22 03:02:54,102 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:02:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9386 transitions. [2018-07-22 03:02:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-22 03:02:54,120 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:54,120 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:02:54,120 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1569024251, now seen corresponding path program 1 times [2018-07-22 03:02:54,121 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:54,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:54,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:54,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:54,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-22 03:02:54,485 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:54,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 03:02:54,486 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:02:54,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:02:54,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:02:54,486 INFO L87 Difference]: Start difference. First operand 6697 states and 9386 transitions. Second operand 3 states. [2018-07-22 03:02:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:58,990 INFO L93 Difference]: Finished difference Result 17338 states and 25183 transitions. [2018-07-22 03:02:58,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:02:58,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2018-07-22 03:02:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:59,051 INFO L225 Difference]: With dead ends: 17338 [2018-07-22 03:02:59,052 INFO L226 Difference]: Without dead ends: 11431 [2018-07-22 03:02:59,062 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:02:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2018-07-22 03:02:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 11430. [2018-07-22 03:02:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-07-22 03:02:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 15069 transitions. [2018-07-22 03:02:59,295 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 15069 transitions. Word has length 196 [2018-07-22 03:02:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:59,299 INFO L471 AbstractCegarLoop]: Abstraction has 11430 states and 15069 transitions. [2018-07-22 03:02:59,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:02:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 15069 transitions. [2018-07-22 03:02:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-22 03:02:59,309 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:59,310 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:02:59,310 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1463343827, now seen corresponding path program 1 times [2018-07-22 03:02:59,310 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:59,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:59,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:59,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:59,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:02:59,879 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:59,879 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:02:59,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:02:59,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:02:59,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:59,880 INFO L87 Difference]: Start difference. First operand 11430 states and 15069 transitions. Second operand 4 states. [2018-07-22 03:03:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:08,781 INFO L93 Difference]: Finished difference Result 28408 states and 38490 transitions. [2018-07-22 03:03:08,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:03:08,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2018-07-22 03:03:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:08,846 INFO L225 Difference]: With dead ends: 28408 [2018-07-22 03:03:08,846 INFO L226 Difference]: Without dead ends: 17768 [2018-07-22 03:03:08,859 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17768 states. [2018-07-22 03:03:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17768 to 17738. [2018-07-22 03:03:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17738 states. [2018-07-22 03:03:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17738 states to 17738 states and 22659 transitions. [2018-07-22 03:03:09,071 INFO L78 Accepts]: Start accepts. Automaton has 17738 states and 22659 transitions. Word has length 213 [2018-07-22 03:03:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:09,072 INFO L471 AbstractCegarLoop]: Abstraction has 17738 states and 22659 transitions. [2018-07-22 03:03:09,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:03:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17738 states and 22659 transitions. [2018-07-22 03:03:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-22 03:03:09,076 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:09,080 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:09,081 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash -417385708, now seen corresponding path program 1 times [2018-07-22 03:03:09,081 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:09,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:09,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:09,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:09,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-22 03:03:09,340 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:03:09,340 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:03:09,340 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:03:09,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:03:09,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:03:09,341 INFO L87 Difference]: Start difference. First operand 17738 states and 22659 transitions. Second operand 3 states. [2018-07-22 03:03:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:13,772 INFO L93 Difference]: Finished difference Result 36248 states and 46643 transitions. [2018-07-22 03:03:13,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:03:13,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2018-07-22 03:03:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:13,817 INFO L225 Difference]: With dead ends: 36248 [2018-07-22 03:03:13,818 INFO L226 Difference]: Without dead ends: 19300 [2018-07-22 03:03:13,839 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:03:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19300 states. [2018-07-22 03:03:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19300 to 19299. [2018-07-22 03:03:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19299 states. [2018-07-22 03:03:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19299 states to 19299 states and 23128 transitions. [2018-07-22 03:03:14,315 INFO L78 Accepts]: Start accepts. Automaton has 19299 states and 23128 transitions. Word has length 230 [2018-07-22 03:03:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:14,316 INFO L471 AbstractCegarLoop]: Abstraction has 19299 states and 23128 transitions. [2018-07-22 03:03:14,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:03:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 19299 states and 23128 transitions. [2018-07-22 03:03:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-22 03:03:14,324 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:14,324 INFO L358 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:14,324 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash 660648638, now seen corresponding path program 1 times [2018-07-22 03:03:14,325 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:14,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:14,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:14,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:14,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-07-22 03:03:14,704 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:03:14,704 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:03:14,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:14,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:03:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 287 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-22 03:03:15,008 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:03:15,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-07-22 03:03:15,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:03:15,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:03:15,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:15,009 INFO L87 Difference]: Start difference. First operand 19299 states and 23128 transitions. Second operand 4 states. [2018-07-22 03:03:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:25,348 INFO L93 Difference]: Finished difference Result 70942 states and 85043 transitions. [2018-07-22 03:03:25,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:03:25,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-07-22 03:03:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:25,428 INFO L225 Difference]: With dead ends: 70942 [2018-07-22 03:03:25,429 INFO L226 Difference]: Without dead ends: 50837 [2018-07-22 03:03:25,453 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50837 states. [2018-07-22 03:03:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50837 to 34253. [2018-07-22 03:03:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34253 states. [2018-07-22 03:03:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34253 states to 34253 states and 39117 transitions. [2018-07-22 03:03:26,432 INFO L78 Accepts]: Start accepts. Automaton has 34253 states and 39117 transitions. Word has length 292 [2018-07-22 03:03:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:26,434 INFO L471 AbstractCegarLoop]: Abstraction has 34253 states and 39117 transitions. [2018-07-22 03:03:26,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:03:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34253 states and 39117 transitions. [2018-07-22 03:03:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-22 03:03:26,442 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:26,442 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:26,442 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:26,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1972422759, now seen corresponding path program 1 times [2018-07-22 03:03:26,443 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:26,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:26,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:26,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:26,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:03:26,896 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:03:26,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:03:26,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:03:26,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:03:26,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:26,898 INFO L87 Difference]: Start difference. First operand 34253 states and 39117 transitions. Second operand 4 states. [2018-07-22 03:03:33,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:33,187 INFO L93 Difference]: Finished difference Result 74021 states and 84179 transitions. [2018-07-22 03:03:33,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:03:33,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2018-07-22 03:03:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:33,219 INFO L225 Difference]: With dead ends: 74021 [2018-07-22 03:03:33,220 INFO L226 Difference]: Without dead ends: 35779 [2018-07-22 03:03:33,235 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35779 states. [2018-07-22 03:03:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35779 to 33414. [2018-07-22 03:03:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33414 states. [2018-07-22 03:03:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33414 states to 33414 states and 37597 transitions. [2018-07-22 03:03:33,613 INFO L78 Accepts]: Start accepts. Automaton has 33414 states and 37597 transitions. Word has length 305 [2018-07-22 03:03:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:33,613 INFO L471 AbstractCegarLoop]: Abstraction has 33414 states and 37597 transitions. [2018-07-22 03:03:33,613 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:03:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 33414 states and 37597 transitions. [2018-07-22 03:03:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-07-22 03:03:33,624 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:33,624 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 03:03:33,625 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -370676522, now seen corresponding path program 1 times [2018-07-22 03:03:33,625 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:33,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:33,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:33,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:33,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:34,286 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-07-22 03:03:34,591 WARN L169 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 6 [2018-07-22 03:03:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 29 proven. 132 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-07-22 03:03:34,741 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:03:34,741 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:03:34,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:34,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:03:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-22 03:03:35,409 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:03:35,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 03:03:35,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 03:03:35,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 03:03:35,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:03:35,410 INFO L87 Difference]: Start difference. First operand 33414 states and 37597 transitions. Second operand 6 states. [2018-07-22 03:03:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:46,627 INFO L93 Difference]: Finished difference Result 116503 states and 131102 transitions. [2018-07-22 03:03:46,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 03:03:46,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 366 [2018-07-22 03:03:46,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:46,696 INFO L225 Difference]: With dead ends: 116503 [2018-07-22 03:03:46,696 INFO L226 Difference]: Without dead ends: 83089 [2018-07-22 03:03:46,721 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:03:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83089 states. [2018-07-22 03:03:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83089 to 60203. [2018-07-22 03:03:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60203 states. [2018-07-22 03:03:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60203 states to 60203 states and 66003 transitions. [2018-07-22 03:03:47,738 INFO L78 Accepts]: Start accepts. Automaton has 60203 states and 66003 transitions. Word has length 366 [2018-07-22 03:03:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:47,739 INFO L471 AbstractCegarLoop]: Abstraction has 60203 states and 66003 transitions. [2018-07-22 03:03:47,739 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 03:03:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 60203 states and 66003 transitions. [2018-07-22 03:03:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-07-22 03:03:47,747 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:47,747 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:47,748 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash 44430679, now seen corresponding path program 1 times [2018-07-22 03:03:47,749 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:47,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:47,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:47,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:47,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-22 03:03:48,347 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:03:48,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:03:48,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:03:48,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:03:48,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:03:48,349 INFO L87 Difference]: Start difference. First operand 60203 states and 66003 transitions. Second operand 5 states. [2018-07-22 03:04:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:04:03,055 INFO L93 Difference]: Finished difference Result 236485 states and 259054 transitions. [2018-07-22 03:04:03,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:04:03,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 410 [2018-07-22 03:04:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:04:03,211 INFO L225 Difference]: With dead ends: 236485 [2018-07-22 03:04:03,211 INFO L226 Difference]: Without dead ends: 177071 [2018-07-22 03:04:03,251 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:04:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177071 states. [2018-07-22 03:04:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177071 to 161922. [2018-07-22 03:04:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161922 states. [2018-07-22 03:04:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161922 states to 161922 states and 175228 transitions. [2018-07-22 03:04:05,103 INFO L78 Accepts]: Start accepts. Automaton has 161922 states and 175228 transitions. Word has length 410 [2018-07-22 03:04:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:04:05,103 INFO L471 AbstractCegarLoop]: Abstraction has 161922 states and 175228 transitions. [2018-07-22 03:04:05,103 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:04:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 161922 states and 175228 transitions. [2018-07-22 03:04:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-22 03:04:05,109 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:04:05,110 INFO L358 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 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] [2018-07-22 03:04:05,110 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:04:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -423144903, now seen corresponding path program 1 times [2018-07-22 03:04:05,110 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:04:05,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:04:05,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:05,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:05,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:05,821 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-22 03:04:06,084 WARN L169 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-22 03:04:06,346 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-07-22 03:04:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 294 proven. 5 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-07-22 03:04:06,564 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:04:06,565 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 03:04:06,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:06,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:04:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-22 03:04:10,219 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:04:10,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-07-22 03:04:10,219 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 03:04:10,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 03:04:10,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-07-22 03:04:10,220 INFO L87 Difference]: Start difference. First operand 161922 states and 175228 transitions. Second operand 8 states. [2018-07-22 03:04:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:04:20,516 INFO L93 Difference]: Finished difference Result 325542 states and 353100 transitions. [2018-07-22 03:04:20,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 03:04:20,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 418 [2018-07-22 03:04:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:04:20,670 INFO L225 Difference]: With dead ends: 325542 [2018-07-22 03:04:20,670 INFO L226 Difference]: Without dead ends: 164410 [2018-07-22 03:04:20,716 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 421 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-07-22 03:04:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164410 states. [2018-07-22 03:04:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164410 to 163473. [2018-07-22 03:04:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163473 states. [2018-07-22 03:04:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163473 states to 163473 states and 173355 transitions. [2018-07-22 03:04:22,563 INFO L78 Accepts]: Start accepts. Automaton has 163473 states and 173355 transitions. Word has length 418 [2018-07-22 03:04:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:04:22,564 INFO L471 AbstractCegarLoop]: Abstraction has 163473 states and 173355 transitions. [2018-07-22 03:04:22,564 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 03:04:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 163473 states and 173355 transitions. [2018-07-22 03:04:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-07-22 03:04:22,584 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:04:22,585 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 4, 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] [2018-07-22 03:04:22,585 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:04:22,585 INFO L82 PathProgramCache]: Analyzing trace with hash -881230806, now seen corresponding path program 1 times [2018-07-22 03:04:22,585 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:04:22,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:04:22,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:22,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:22,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-07-22 03:04:23,147 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:04:23,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:04:23,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:04:23,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:04:23,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:04:23,148 INFO L87 Difference]: Start difference. First operand 163473 states and 173355 transitions. Second operand 4 states. [2018-07-22 03:04:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:04:31,169 INFO L93 Difference]: Finished difference Result 326176 states and 345828 transitions. [2018-07-22 03:04:31,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:04:31,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 647 [2018-07-22 03:04:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:04:31,313 INFO L225 Difference]: With dead ends: 326176 [2018-07-22 03:04:31,313 INFO L226 Difference]: Without dead ends: 161912 [2018-07-22 03:04:31,376 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:04:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161912 states. [2018-07-22 03:04:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161912 to 159512. [2018-07-22 03:04:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159512 states. [2018-07-22 03:04:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159512 states to 159512 states and 166169 transitions. [2018-07-22 03:04:33,573 INFO L78 Accepts]: Start accepts. Automaton has 159512 states and 166169 transitions. Word has length 647 [2018-07-22 03:04:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:04:33,573 INFO L471 AbstractCegarLoop]: Abstraction has 159512 states and 166169 transitions. [2018-07-22 03:04:33,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:04:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 159512 states and 166169 transitions. [2018-07-22 03:04:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-07-22 03:04:33,598 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:04:33,598 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:04:33,599 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:04:33,599 INFO L82 PathProgramCache]: Analyzing trace with hash -416570515, now seen corresponding path program 1 times [2018-07-22 03:04:33,600 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:04:33,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:04:33,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:33,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:33,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-22 03:04:38,026 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:04:38,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:04:38,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:04:38,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:04:38,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:04:38,027 INFO L87 Difference]: Start difference. First operand 159512 states and 166169 transitions. Second operand 4 states. [2018-07-22 03:04:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:04:47,935 INFO L93 Difference]: Finished difference Result 351407 states and 366392 transitions. [2018-07-22 03:04:47,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:04:47,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 658 [2018-07-22 03:04:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:04:48,097 INFO L225 Difference]: With dead ends: 351407 [2018-07-22 03:04:48,098 INFO L226 Difference]: Without dead ends: 192685 [2018-07-22 03:04:48,141 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:04:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192685 states. [2018-07-22 03:04:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192685 to 187883. [2018-07-22 03:04:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187883 states. [2018-07-22 03:04:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187883 states to 187883 states and 195698 transitions. [2018-07-22 03:04:50,612 INFO L78 Accepts]: Start accepts. Automaton has 187883 states and 195698 transitions. Word has length 658 [2018-07-22 03:04:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:04:50,612 INFO L471 AbstractCegarLoop]: Abstraction has 187883 states and 195698 transitions. [2018-07-22 03:04:50,612 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:04:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 187883 states and 195698 transitions. [2018-07-22 03:04:50,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-07-22 03:04:50,628 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:04:50,628 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:04:50,628 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:04:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash 320092494, now seen corresponding path program 1 times [2018-07-22 03:04:50,629 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:04:50,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:04:50,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:50,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:50,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:51,474 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-07-22 03:04:51,474 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:04:51,474 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 03:04:51,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:04:51,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:04:51,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:04:51,476 INFO L87 Difference]: Start difference. First operand 187883 states and 195698 transitions. Second operand 3 states. [2018-07-22 03:04:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:04:56,652 INFO L93 Difference]: Finished difference Result 374177 states and 389742 transitions. [2018-07-22 03:04:56,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:04:56,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 683 [2018-07-22 03:04:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:04:56,834 INFO L225 Difference]: With dead ends: 374177 [2018-07-22 03:04:56,834 INFO L226 Difference]: Without dead ends: 187082 [2018-07-22 03:04:56,899 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:04:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187082 states. [2018-07-22 03:04:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187082 to 187082. [2018-07-22 03:04:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187082 states. [2018-07-22 03:04:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187082 states to 187082 states and 194822 transitions. [2018-07-22 03:04:59,051 INFO L78 Accepts]: Start accepts. Automaton has 187082 states and 194822 transitions. Word has length 683 [2018-07-22 03:04:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:04:59,051 INFO L471 AbstractCegarLoop]: Abstraction has 187082 states and 194822 transitions. [2018-07-22 03:04:59,051 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:04:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 187082 states and 194822 transitions. [2018-07-22 03:04:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-07-22 03:04:59,065 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:04:59,066 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:04:59,066 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:04:59,066 INFO L82 PathProgramCache]: Analyzing trace with hash 277874540, now seen corresponding path program 1 times [2018-07-22 03:04:59,066 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:04:59,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:04:59,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:59,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:59,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:04:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:59,795 WARN L169 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-22 03:05:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-07-22 03:05:00,469 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:05:00,469 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:05:00,470 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:05:00,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:05:00,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:05:00,470 INFO L87 Difference]: Start difference. First operand 187082 states and 194822 transitions. Second operand 4 states. [2018-07-22 03:05:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:05:08,541 INFO L93 Difference]: Finished difference Result 374979 states and 390483 transitions. [2018-07-22 03:05:08,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:05:08,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 688 [2018-07-22 03:05:08,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:05:08,734 INFO L225 Difference]: With dead ends: 374979 [2018-07-22 03:05:08,735 INFO L226 Difference]: Without dead ends: 188687 [2018-07-22 03:05:08,807 INFO L578 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 [2018-07-22 03:05:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188687 states. [2018-07-22 03:05:10,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188687 to 176834. [2018-07-22 03:05:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176834 states. [2018-07-22 03:05:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176834 states to 176834 states and 182569 transitions. [2018-07-22 03:05:10,622 INFO L78 Accepts]: Start accepts. Automaton has 176834 states and 182569 transitions. Word has length 688 [2018-07-22 03:05:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:05:10,623 INFO L471 AbstractCegarLoop]: Abstraction has 176834 states and 182569 transitions. [2018-07-22 03:05:10,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:05:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 176834 states and 182569 transitions. [2018-07-22 03:05:10,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-07-22 03:05:10,641 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:05:10,642 INFO L358 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:05:10,642 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:05:10,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1776990998, now seen corresponding path program 1 times [2018-07-22 03:05:10,642 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:05:10,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:05:10,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:05:10,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:05:10,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:05:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:05:12,104 WARN L169 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-07-22 03:05:12,415 WARN L169 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2018-07-22 03:05:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-22 03:05:15,190 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:05:15,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 03:05:15,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 03:05:15,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 03:05:15,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:05:15,212 INFO L87 Difference]: Start difference. First operand 176834 states and 182569 transitions. Second operand 6 states. [2018-07-22 03:05:27,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:05:27,388 INFO L93 Difference]: Finished difference Result 401806 states and 414453 transitions. [2018-07-22 03:05:27,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 03:05:27,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 809 [2018-07-22 03:05:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:05:27,617 INFO L225 Difference]: With dead ends: 401806 [2018-07-22 03:05:27,617 INFO L226 Difference]: Without dead ends: 225762 [2018-07-22 03:05:27,659 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:05:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225762 states. [2018-07-22 03:05:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225762 to 207570. [2018-07-22 03:05:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207570 states. [2018-07-22 03:05:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207570 states to 207570 states and 213642 transitions. [2018-07-22 03:05:29,825 INFO L78 Accepts]: Start accepts. Automaton has 207570 states and 213642 transitions. Word has length 809 [2018-07-22 03:05:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:05:29,825 INFO L471 AbstractCegarLoop]: Abstraction has 207570 states and 213642 transitions. [2018-07-22 03:05:29,825 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 03:05:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 207570 states and 213642 transitions. [2018-07-22 03:05:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2018-07-22 03:05:29,842 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:05:29,843 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 03:05:29,843 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:05:29,844 INFO L82 PathProgramCache]: Analyzing trace with hash 873710480, now seen corresponding path program 1 times [2018-07-22 03:05:29,844 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:05:29,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:05:29,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:05:29,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:05:29,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:05:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:05:30,908 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-22 03:05:31,276 WARN L169 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-07-22 03:05:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 597 proven. 225 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-07-22 03:05:35,487 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:05:35,487 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 03:05:35,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:05:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:05:35,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:05:36,502 WARN L169 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2018-07-22 03:05:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 698 proven. 225 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-22 03:05:37,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 03:05:37,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-07-22 03:05:37,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 03:05:37,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 03:05:37,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-22 03:05:37,953 INFO L87 Difference]: Start difference. First operand 207570 states and 213642 transitions. Second operand 9 states. Received shutdown request... [2018-07-22 03:05:40,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-22 03:05:40,981 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 03:05:40,986 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 03:05:40,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:05:40 BoogieIcfgContainer [2018-07-22 03:05:40,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 03:05:40,989 INFO L168 Benchmark]: Toolchain (without parser) took 214240.73 ms. Allocated memory was 305.7 MB in the beginning and 3.0 GB in the end (delta: 2.7 GB). Free memory was 235.5 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 03:05:40,990 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 03:05:40,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3213.98 ms. Allocated memory was 305.7 MB in the beginning and 376.4 MB in the end (delta: 70.8 MB). Free memory was 235.5 MB in the beginning and 182.3 MB in the end (delta: 53.2 MB). Peak memory consumption was 124.0 MB. Max. memory is 5.3 GB. [2018-07-22 03:05:40,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 868.46 ms. Allocated memory was 376.4 MB in the beginning and 389.5 MB in the end (delta: 13.1 MB). Free memory was 182.3 MB in the beginning and 178.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 89.6 MB. Max. memory is 5.3 GB. [2018-07-22 03:05:40,992 INFO L168 Benchmark]: Boogie Preprocessor took 1521.44 ms. Allocated memory was 389.5 MB in the beginning and 677.9 MB in the end (delta: 288.4 MB). Free memory was 178.7 MB in the beginning and 475.2 MB in the end (delta: -296.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 5.3 GB. [2018-07-22 03:05:40,993 INFO L168 Benchmark]: RCFGBuilder took 12597.34 ms. Allocated memory was 677.9 MB in the beginning and 939.5 MB in the end (delta: 261.6 MB). Free memory was 475.2 MB in the beginning and 523.3 MB in the end (delta: -48.1 MB). Peak memory consumption was 317.0 MB. Max. memory is 5.3 GB. [2018-07-22 03:05:40,994 INFO L168 Benchmark]: TraceAbstraction took 196027.47 ms. Allocated memory was 939.5 MB in the beginning and 3.0 GB in the end (delta: 2.1 GB). Free memory was 523.3 MB in the beginning and 1.4 GB in the end (delta: -906.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-22 03:05:41,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 305.7 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3213.98 ms. Allocated memory was 305.7 MB in the beginning and 376.4 MB in the end (delta: 70.8 MB). Free memory was 235.5 MB in the beginning and 182.3 MB in the end (delta: 53.2 MB). Peak memory consumption was 124.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 868.46 ms. Allocated memory was 376.4 MB in the beginning and 389.5 MB in the end (delta: 13.1 MB). Free memory was 182.3 MB in the beginning and 178.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 89.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1521.44 ms. Allocated memory was 389.5 MB in the beginning and 677.9 MB in the end (delta: 288.4 MB). Free memory was 178.7 MB in the beginning and 475.2 MB in the end (delta: -296.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 12597.34 ms. Allocated memory was 677.9 MB in the beginning and 939.5 MB in the end (delta: 261.6 MB). Free memory was 475.2 MB in the beginning and 523.3 MB in the end (delta: -48.1 MB). Peak memory consumption was 317.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 196027.47 ms. Allocated memory was 939.5 MB in the beginning and 3.0 GB in the end (delta: 2.1 GB). Free memory was 523.3 MB in the beginning and 1.4 GB in the end (delta: -906.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (207570states) and interpolant automaton (currently 10 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (2351 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 195.9s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 146.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11584 SDtfs, 37267 SDslu, 3855 SDs, 0 SdLazy, 79734 SolverSat, 15126 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 116.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2114 GetRequests, 2054 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207570occurred in iteration=15, 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: 18.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 95220 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 9012 NumberOfCodeBlocks, 9012 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8992 ConstructedInterpolants, 124 QuantifiedInterpolants, 18189512 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2600 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 9721/10312 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label36_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_03-05-41-020.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label36_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_03-05-41-020.csv Completed graceful shutdown