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/Problem03_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 23:05:24,431 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 23:05:24,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 23:05:24,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 23:05:24,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 23:05:24,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 23:05:24,501 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 23:05:24,503 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 23:05:24,505 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 23:05:24,508 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 23:05:24,512 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 23:05:24,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 23:05:24,513 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 23:05:24,514 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 23:05:24,517 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 23:05:24,518 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 23:05:24,519 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 23:05:24,521 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 23:05:24,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 23:05:24,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 23:05:24,534 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 23:05:24,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 23:05:24,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 23:05:24,553 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 23:05:24,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 23:05:24,589 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 23:05:24,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 23:05:24,590 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 23:05:24,592 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 23:05:24,592 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 23:05:24,592 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 23:05:24,592 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 23:05:24,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 23:05:24,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 23:05:24,593 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 23:05:24,593 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 23:05:24,593 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 23:05:24,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 23:05:24,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 23:05:24,594 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 23:05:24,594 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 23:05:24,594 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 23:05:24,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 23:05:24,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 23:05:24,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 23:05:24,595 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 23:05:24,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 23:05:24,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 23:05:24,596 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 23:05:24,596 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 23:05:24,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 23:05:24,597 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 23:05:24,597 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 23:05:24,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 23:05:24,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 23:05:24,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 23:05:24,795 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 23:05:24,800 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 23:05:24,801 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-07-21 23:05:25,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9f96321ae/0d6d3d9521c34a31be3903d91b5ef6f9/FLAG0d940173a [2018-07-21 23:05:26,172 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 23:05:26,173 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-07-21 23:05:26,201 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9f96321ae/0d6d3d9521c34a31be3903d91b5ef6f9/FLAG0d940173a [2018-07-21 23:05:26,226 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9f96321ae/0d6d3d9521c34a31be3903d91b5ef6f9 [2018-07-21 23:05:26,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 23:05:27,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 23:05:27,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 23:05:27,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 23:05:27,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 23:05:27,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:05:26" (1/1) ... [2018-07-21 23:05:27,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ffe425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:27, skipping insertion in model container [2018-07-21 23:05:27,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:05:26" (1/1) ... [2018-07-21 23:05:27,484 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 23:05:28,086 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:05:28,112 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 23:05:28,505 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 23:05:28,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28 WrapperNode [2018-07-21 23:05:28,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 23:05:28,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 23:05:28,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 23:05:28,588 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 23:05:28,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:28,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:28,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 23:05:28,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 23:05:28,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 23:05:28,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 23:05:28,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:28,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:28,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:28,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:29,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:29,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:29,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... [2018-07-21 23:05:29,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 23:05:29,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 23:05:29,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 23:05:29,199 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 23:05:29,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 23:05:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-21 23:05:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 23:05:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 23:05:35,228 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 23:05:35,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:05:35 BoogieIcfgContainer [2018-07-21 23:05:35,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 23:05:35,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 23:05:35,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 23:05:35,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 23:05:35,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:05:26" (1/3) ... [2018-07-21 23:05:35,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db73828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:05:35, skipping insertion in model container [2018-07-21 23:05:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:05:28" (2/3) ... [2018-07-21 23:05:35,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db73828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:05:35, skipping insertion in model container [2018-07-21 23:05:35,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:05:35" (3/3) ... [2018-07-21 23:05:35,238 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label37_false-unreach-call.c [2018-07-21 23:05:35,247 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 23:05:35,256 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 23:05:35,319 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 23:05:35,320 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 23:05:35,320 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 23:05:35,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 23:05:35,321 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 23:05:35,321 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 23:05:35,321 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 23:05:35,321 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 23:05:35,321 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 23:05:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-21 23:05:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-21 23:05:35,365 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:35,366 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:35,366 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 731851020, now seen corresponding path program 1 times [2018-07-21 23:05:35,373 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:35,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:35,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:35,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:35,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:36,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:36,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:05:36,158 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:05:36,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:05:36,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:05:36,178 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 3 states. [2018-07-21 23:05:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:37,683 INFO L93 Difference]: Finished difference Result 832 states and 1481 transitions. [2018-07-21 23:05:37,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:05:37,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2018-07-21 23:05:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:37,708 INFO L225 Difference]: With dead ends: 832 [2018-07-21 23:05:37,708 INFO L226 Difference]: Without dead ends: 525 [2018-07-21 23:05:37,714 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 [2018-07-21 23:05:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-07-21 23:05:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 511. [2018-07-21 23:05:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-07-21 23:05:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 878 transitions. [2018-07-21 23:05:37,798 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 878 transitions. Word has length 150 [2018-07-21 23:05:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:37,799 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 878 transitions. [2018-07-21 23:05:37,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:05:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 878 transitions. [2018-07-21 23:05:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-21 23:05:37,804 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:37,805 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:37,805 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:37,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1007064637, now seen corresponding path program 1 times [2018-07-21 23:05:37,806 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:37,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:37,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:37,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:37,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:37,951 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:37,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:05:37,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:05:37,954 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:05:37,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:05:37,954 INFO L87 Difference]: Start difference. First operand 511 states and 878 transitions. Second operand 3 states. [2018-07-21 23:05:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:38,811 INFO L93 Difference]: Finished difference Result 1518 states and 2616 transitions. [2018-07-21 23:05:38,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:05:38,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-07-21 23:05:38,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:38,818 INFO L225 Difference]: With dead ends: 1518 [2018-07-21 23:05:38,818 INFO L226 Difference]: Without dead ends: 1009 [2018-07-21 23:05:38,822 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 [2018-07-21 23:05:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2018-07-21 23:05:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1006. [2018-07-21 23:05:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2018-07-21 23:05:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1731 transitions. [2018-07-21 23:05:38,881 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1731 transitions. Word has length 156 [2018-07-21 23:05:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:38,882 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1731 transitions. [2018-07-21 23:05:38,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:05:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1731 transitions. [2018-07-21 23:05:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-21 23:05:38,889 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:38,889 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-21 23:05:38,889 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1168955832, now seen corresponding path program 1 times [2018-07-21 23:05:38,890 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:38,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:38,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:39,168 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:39,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:05:39,171 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:05:39,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:05:39,171 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:05:39,171 INFO L87 Difference]: Start difference. First operand 1006 states and 1731 transitions. Second operand 3 states. [2018-07-21 23:05:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:43,286 INFO L93 Difference]: Finished difference Result 2848 states and 5002 transitions. [2018-07-21 23:05:43,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:05:43,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2018-07-21 23:05:43,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:43,300 INFO L225 Difference]: With dead ends: 2848 [2018-07-21 23:05:43,300 INFO L226 Difference]: Without dead ends: 1844 [2018-07-21 23:05:43,303 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 [2018-07-21 23:05:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2018-07-21 23:05:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2018-07-21 23:05:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2018-07-21 23:05:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2985 transitions. [2018-07-21 23:05:43,372 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2985 transitions. Word has length 158 [2018-07-21 23:05:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:43,373 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2985 transitions. [2018-07-21 23:05:43,373 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:05:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2985 transitions. [2018-07-21 23:05:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-21 23:05:43,380 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:43,380 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:43,381 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash -578695440, now seen corresponding path program 1 times [2018-07-21 23:05:43,381 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:43,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:43,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:43,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:43,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:43,687 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-21 23:05:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:43,718 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:43,719 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:05:43,719 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:05:43,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:05:43,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:05:43,720 INFO L87 Difference]: Start difference. First operand 1841 states and 2985 transitions. Second operand 4 states. [2018-07-21 23:05:46,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:46,364 INFO L93 Difference]: Finished difference Result 7028 states and 11557 transitions. [2018-07-21 23:05:46,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:05:46,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-07-21 23:05:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:46,392 INFO L225 Difference]: With dead ends: 7028 [2018-07-21 23:05:46,392 INFO L226 Difference]: Without dead ends: 5189 [2018-07-21 23:05:46,396 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:05:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2018-07-21 23:05:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 3481. [2018-07-21 23:05:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3481 states. [2018-07-21 23:05:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 5332 transitions. [2018-07-21 23:05:46,527 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 5332 transitions. Word has length 174 [2018-07-21 23:05:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:46,528 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 5332 transitions. [2018-07-21 23:05:46,528 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:05:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 5332 transitions. [2018-07-21 23:05:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-07-21 23:05:46,535 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:46,535 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-21 23:05:46,535 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1835060579, now seen corresponding path program 1 times [2018-07-21 23:05:46,536 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:46,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:46,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:46,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:46,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-21 23:05:46,693 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:46,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:05:46,694 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:05:46,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:05:46,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:05:46,695 INFO L87 Difference]: Start difference. First operand 3481 states and 5332 transitions. Second operand 3 states. [2018-07-21 23:05:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:47,523 INFO L93 Difference]: Finished difference Result 6910 states and 10594 transitions. [2018-07-21 23:05:47,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:05:47,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-07-21 23:05:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:47,537 INFO L225 Difference]: With dead ends: 6910 [2018-07-21 23:05:47,537 INFO L226 Difference]: Without dead ends: 3431 [2018-07-21 23:05:47,542 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 [2018-07-21 23:05:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2018-07-21 23:05:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3431. [2018-07-21 23:05:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2018-07-21 23:05:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5172 transitions. [2018-07-21 23:05:47,639 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5172 transitions. Word has length 188 [2018-07-21 23:05:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:47,640 INFO L471 AbstractCegarLoop]: Abstraction has 3431 states and 5172 transitions. [2018-07-21 23:05:47,640 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:05:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5172 transitions. [2018-07-21 23:05:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-21 23:05:47,645 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:47,646 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:47,646 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:47,646 INFO L82 PathProgramCache]: Analyzing trace with hash 871547400, now seen corresponding path program 1 times [2018-07-21 23:05:47,646 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:47,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:47,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:47,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:47,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:48,178 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-21 23:05:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:48,199 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:48,200 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:05:48,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 23:05:48,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 23:05:48,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:05:48,200 INFO L87 Difference]: Start difference. First operand 3431 states and 5172 transitions. Second operand 5 states. [2018-07-21 23:05:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:49,803 INFO L93 Difference]: Finished difference Result 8133 states and 12410 transitions. [2018-07-21 23:05:49,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-21 23:05:49,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2018-07-21 23:05:49,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:49,846 INFO L225 Difference]: With dead ends: 8133 [2018-07-21 23:05:49,846 INFO L226 Difference]: Without dead ends: 4704 [2018-07-21 23:05:49,851 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:05:49,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2018-07-21 23:05:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 3839. [2018-07-21 23:05:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2018-07-21 23:05:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5746 transitions. [2018-07-21 23:05:49,937 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5746 transitions. Word has length 190 [2018-07-21 23:05:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:49,938 INFO L471 AbstractCegarLoop]: Abstraction has 3839 states and 5746 transitions. [2018-07-21 23:05:49,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 23:05:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5746 transitions. [2018-07-21 23:05:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-21 23:05:49,945 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:49,945 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:49,945 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:49,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1631554691, now seen corresponding path program 1 times [2018-07-21 23:05:49,946 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:49,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:49,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:49,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:49,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 23:05:50,211 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:50,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:05:50,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:05:50,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:05:50,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:05:50,212 INFO L87 Difference]: Start difference. First operand 3839 states and 5746 transitions. Second operand 4 states. [2018-07-21 23:05:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:51,664 INFO L93 Difference]: Finished difference Result 14412 states and 21540 transitions. [2018-07-21 23:05:51,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:05:51,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-07-21 23:05:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:51,704 INFO L225 Difference]: With dead ends: 14412 [2018-07-21 23:05:51,704 INFO L226 Difference]: Without dead ends: 10575 [2018-07-21 23:05:51,714 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 [2018-07-21 23:05:51,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2018-07-21 23:05:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 10571. [2018-07-21 23:05:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2018-07-21 23:05:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 13674 transitions. [2018-07-21 23:05:51,948 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 13674 transitions. Word has length 191 [2018-07-21 23:05:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:51,949 INFO L471 AbstractCegarLoop]: Abstraction has 10571 states and 13674 transitions. [2018-07-21 23:05:51,949 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:05:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 13674 transitions. [2018-07-21 23:05:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-21 23:05:51,965 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:51,966 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:51,966 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1283227012, now seen corresponding path program 1 times [2018-07-21 23:05:51,966 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:51,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:51,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:51,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:51,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:52,133 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:52,133 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:05:52,133 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:05:52,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:05:52,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:05:52,134 INFO L87 Difference]: Start difference. First operand 10571 states and 13674 transitions. Second operand 3 states. [2018-07-21 23:05:53,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:53,266 INFO L93 Difference]: Finished difference Result 25237 states and 32371 transitions. [2018-07-21 23:05:53,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:05:53,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-07-21 23:05:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:53,296 INFO L225 Difference]: With dead ends: 25237 [2018-07-21 23:05:53,296 INFO L226 Difference]: Without dead ends: 14668 [2018-07-21 23:05:53,308 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 [2018-07-21 23:05:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2018-07-21 23:05:53,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 14666. [2018-07-21 23:05:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14666 states. [2018-07-21 23:05:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14666 states to 14666 states and 18551 transitions. [2018-07-21 23:05:53,559 INFO L78 Accepts]: Start accepts. Automaton has 14666 states and 18551 transitions. Word has length 192 [2018-07-21 23:05:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:53,560 INFO L471 AbstractCegarLoop]: Abstraction has 14666 states and 18551 transitions. [2018-07-21 23:05:53,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:05:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14666 states and 18551 transitions. [2018-07-21 23:05:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-07-21 23:05:53,572 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:53,572 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:53,573 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash -244605912, now seen corresponding path program 1 times [2018-07-21 23:05:53,573 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:53,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:53,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 23:05:53,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:05:53,987 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 23:05:53,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 23:05:53,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 23:05:53,988 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:05:53,988 INFO L87 Difference]: Start difference. First operand 14666 states and 18551 transitions. Second operand 6 states. [2018-07-21 23:05:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:05:55,879 INFO L93 Difference]: Finished difference Result 31810 states and 40192 transitions. [2018-07-21 23:05:55,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 23:05:55,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2018-07-21 23:05:55,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:05:55,908 INFO L225 Difference]: With dead ends: 31810 [2018-07-21 23:05:55,909 INFO L226 Difference]: Without dead ends: 17146 [2018-07-21 23:05:55,925 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:05:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17146 states. [2018-07-21 23:05:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17146 to 15482. [2018-07-21 23:05:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15482 states. [2018-07-21 23:05:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15482 states to 15482 states and 19060 transitions. [2018-07-21 23:05:56,191 INFO L78 Accepts]: Start accepts. Automaton has 15482 states and 19060 transitions. Word has length 200 [2018-07-21 23:05:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:05:56,191 INFO L471 AbstractCegarLoop]: Abstraction has 15482 states and 19060 transitions. [2018-07-21 23:05:56,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 23:05:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 15482 states and 19060 transitions. [2018-07-21 23:05:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-21 23:05:56,204 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:05:56,204 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:05:56,204 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:05:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash 297430614, now seen corresponding path program 1 times [2018-07-21 23:05:56,205 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:05:56,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:05:56,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:56,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:56,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:05:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:56,542 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-21 23:05:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-21 23:05:56,594 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:05:56,594 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 [2018-07-21 23:05:56,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:05:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:05:56,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:05:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-21 23:05:56,889 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:05:56,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-21 23:05:56,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 23:05:56,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 23:05:56,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-21 23:05:56,891 INFO L87 Difference]: Start difference. First operand 15482 states and 19060 transitions. Second operand 6 states. [2018-07-21 23:05:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:00,014 INFO L93 Difference]: Finished difference Result 68286 states and 83361 transitions. [2018-07-21 23:06:00,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 23:06:00,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-07-21 23:06:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:00,083 INFO L225 Difference]: With dead ends: 68286 [2018-07-21 23:06:00,083 INFO L226 Difference]: Without dead ends: 52806 [2018-07-21 23:06:00,110 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 23:06:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52806 states. [2018-07-21 23:06:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52806 to 52793. [2018-07-21 23:06:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52793 states. [2018-07-21 23:06:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52793 states to 52793 states and 61562 transitions. [2018-07-21 23:06:01,004 INFO L78 Accepts]: Start accepts. Automaton has 52793 states and 61562 transitions. Word has length 229 [2018-07-21 23:06:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:01,005 INFO L471 AbstractCegarLoop]: Abstraction has 52793 states and 61562 transitions. [2018-07-21 23:06:01,005 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 23:06:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 52793 states and 61562 transitions. [2018-07-21 23:06:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-21 23:06:01,023 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:01,023 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:06:01,024 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash 959896374, now seen corresponding path program 1 times [2018-07-21 23:06:01,024 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:01,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:01,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:01,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:01,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-21 23:06:01,428 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:06:01,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:06:01,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:06:01,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:06:01,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:06:01,432 INFO L87 Difference]: Start difference. First operand 52793 states and 61562 transitions. Second operand 4 states. [2018-07-21 23:06:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:04,247 INFO L93 Difference]: Finished difference Result 171641 states and 198677 transitions. [2018-07-21 23:06:04,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:06:04,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-07-21 23:06:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:04,358 INFO L225 Difference]: With dead ends: 171641 [2018-07-21 23:06:04,358 INFO L226 Difference]: Without dead ends: 118850 [2018-07-21 23:06:04,394 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:06:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118850 states. [2018-07-21 23:06:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118850 to 87880. [2018-07-21 23:06:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87880 states. [2018-07-21 23:06:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87880 states to 87880 states and 100707 transitions. [2018-07-21 23:06:08,176 INFO L78 Accepts]: Start accepts. Automaton has 87880 states and 100707 transitions. Word has length 250 [2018-07-21 23:06:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:08,176 INFO L471 AbstractCegarLoop]: Abstraction has 87880 states and 100707 transitions. [2018-07-21 23:06:08,176 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:06:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 87880 states and 100707 transitions. [2018-07-21 23:06:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-21 23:06:08,197 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:08,198 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:06:08,198 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:08,198 INFO L82 PathProgramCache]: Analyzing trace with hash -511019671, now seen corresponding path program 1 times [2018-07-21 23:06:08,198 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:08,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:08,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:08,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:08,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-21 23:06:08,450 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:06:08,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-21 23:06:08,451 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:06:08,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:06:08,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:06:08,452 INFO L87 Difference]: Start difference. First operand 87880 states and 100707 transitions. Second operand 3 states. [2018-07-21 23:06:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:09,620 INFO L93 Difference]: Finished difference Result 175750 states and 201404 transitions. [2018-07-21 23:06:09,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:06:09,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 278 [2018-07-21 23:06:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:09,700 INFO L225 Difference]: With dead ends: 175750 [2018-07-21 23:06:09,701 INFO L226 Difference]: Without dead ends: 87872 [2018-07-21 23:06:09,741 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 [2018-07-21 23:06:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87872 states. [2018-07-21 23:06:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87872 to 87872. [2018-07-21 23:06:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87872 states. [2018-07-21 23:06:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87872 states to 87872 states and 100691 transitions. [2018-07-21 23:06:10,971 INFO L78 Accepts]: Start accepts. Automaton has 87872 states and 100691 transitions. Word has length 278 [2018-07-21 23:06:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:10,971 INFO L471 AbstractCegarLoop]: Abstraction has 87872 states and 100691 transitions. [2018-07-21 23:06:10,971 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:06:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 87872 states and 100691 transitions. [2018-07-21 23:06:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-07-21 23:06:10,989 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:10,989 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-21 23:06:10,990 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:10,990 INFO L82 PathProgramCache]: Analyzing trace with hash -634931737, now seen corresponding path program 1 times [2018-07-21 23:06:10,990 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:10,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:10,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:10,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:10,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-21 23:06:11,501 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:06:11,502 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) [2018-07-21 23:06:11,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 23:06:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:11,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:06:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-21 23:06:11,907 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:06:11,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-07-21 23:06:11,908 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 23:06:11,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 23:06:11,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-21 23:06:11,909 INFO L87 Difference]: Start difference. First operand 87872 states and 100691 transitions. Second operand 5 states. [2018-07-21 23:06:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:17,951 INFO L93 Difference]: Finished difference Result 567407 states and 646840 transitions. [2018-07-21 23:06:17,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 23:06:17,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2018-07-21 23:06:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:18,594 INFO L225 Difference]: With dead ends: 567407 [2018-07-21 23:06:18,595 INFO L226 Difference]: Without dead ends: 479537 [2018-07-21 23:06:18,699 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-21 23:06:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479537 states. [2018-07-21 23:06:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479537 to 304779. [2018-07-21 23:06:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304779 states. [2018-07-21 23:06:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304779 states to 304779 states and 348118 transitions. [2018-07-21 23:06:27,362 INFO L78 Accepts]: Start accepts. Automaton has 304779 states and 348118 transitions. Word has length 293 [2018-07-21 23:06:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:27,362 INFO L471 AbstractCegarLoop]: Abstraction has 304779 states and 348118 transitions. [2018-07-21 23:06:27,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 23:06:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 304779 states and 348118 transitions. [2018-07-21 23:06:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-07-21 23:06:27,430 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:27,430 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:06:27,430 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1839937919, now seen corresponding path program 1 times [2018-07-21 23:06:27,431 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:27,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:27,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:27,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:27,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-07-21 23:06:28,648 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:06:28,649 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:06:28,649 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:06:28,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:06:28,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:06:28,650 INFO L87 Difference]: Start difference. First operand 304779 states and 348118 transitions. Second operand 4 states. [2018-07-21 23:06:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:32,240 INFO L93 Difference]: Finished difference Result 623118 states and 712533 transitions. [2018-07-21 23:06:32,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:06:32,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2018-07-21 23:06:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:38,899 INFO L225 Difference]: With dead ends: 623118 [2018-07-21 23:06:38,899 INFO L226 Difference]: Without dead ends: 318341 [2018-07-21 23:06:39,019 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 [2018-07-21 23:06:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318341 states. [2018-07-21 23:06:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318341 to 317049. [2018-07-21 23:06:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317049 states. [2018-07-21 23:06:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317049 states to 317049 states and 361958 transitions. [2018-07-21 23:06:43,471 INFO L78 Accepts]: Start accepts. Automaton has 317049 states and 361958 transitions. Word has length 294 [2018-07-21 23:06:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:43,471 INFO L471 AbstractCegarLoop]: Abstraction has 317049 states and 361958 transitions. [2018-07-21 23:06:43,471 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:06:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 317049 states and 361958 transitions. [2018-07-21 23:06:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-21 23:06:43,521 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:43,521 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:06:43,522 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:43,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1778051403, now seen corresponding path program 1 times [2018-07-21 23:06:43,522 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:43,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:43,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:43,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:43,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-21 23:06:43,976 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:06:43,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:06:43,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:06:43,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:06:43,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:06:43,977 INFO L87 Difference]: Start difference. First operand 317049 states and 361958 transitions. Second operand 4 states. [2018-07-21 23:06:51,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:06:51,949 INFO L93 Difference]: Finished difference Result 616909 states and 704385 transitions. [2018-07-21 23:06:51,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:06:51,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2018-07-21 23:06:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:06:52,360 INFO L225 Difference]: With dead ends: 616909 [2018-07-21 23:06:52,360 INFO L226 Difference]: Without dead ends: 299862 [2018-07-21 23:06:52,446 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 [2018-07-21 23:06:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299862 states. [2018-07-21 23:06:56,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299862 to 287390. [2018-07-21 23:06:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287390 states. [2018-07-21 23:06:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287390 states to 287390 states and 321665 transitions. [2018-07-21 23:06:57,928 INFO L78 Accepts]: Start accepts. Automaton has 287390 states and 321665 transitions. Word has length 299 [2018-07-21 23:06:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:06:57,928 INFO L471 AbstractCegarLoop]: Abstraction has 287390 states and 321665 transitions. [2018-07-21 23:06:57,928 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:06:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 287390 states and 321665 transitions. [2018-07-21 23:06:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-21 23:06:57,960 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:06:57,960 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:06:57,961 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:06:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1430527303, now seen corresponding path program 1 times [2018-07-21 23:06:57,962 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:06:57,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:06:57,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:57,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:06:57,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:06:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:06:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-21 23:06:58,272 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:06:58,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:06:58,273 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:06:58,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:06:58,274 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:06:58,274 INFO L87 Difference]: Start difference. First operand 287390 states and 321665 transitions. Second operand 3 states. [2018-07-21 23:07:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:07:05,347 INFO L93 Difference]: Finished difference Result 550622 states and 617615 transitions. [2018-07-21 23:07:05,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:07:05,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2018-07-21 23:07:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:07:05,640 INFO L225 Difference]: With dead ends: 550622 [2018-07-21 23:07:05,641 INFO L226 Difference]: Without dead ends: 263234 [2018-07-21 23:07:05,721 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 [2018-07-21 23:07:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263234 states. [2018-07-21 23:07:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263234 to 257490. [2018-07-21 23:07:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257490 states. [2018-07-21 23:07:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257490 states to 257490 states and 282843 transitions. [2018-07-21 23:07:09,094 INFO L78 Accepts]: Start accepts. Automaton has 257490 states and 282843 transitions. Word has length 316 [2018-07-21 23:07:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:07:09,094 INFO L471 AbstractCegarLoop]: Abstraction has 257490 states and 282843 transitions. [2018-07-21 23:07:09,094 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:07:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 257490 states and 282843 transitions. [2018-07-21 23:07:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-21 23:07:09,110 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:07:09,110 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:07:09,111 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:07:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash 29381870, now seen corresponding path program 1 times [2018-07-21 23:07:09,111 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:07:09,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:07:09,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:09,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:07:09,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:07:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-21 23:07:09,383 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:07:09,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:07:09,384 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:07:09,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:07:09,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:07:09,385 INFO L87 Difference]: Start difference. First operand 257490 states and 282843 transitions. Second operand 4 states. [2018-07-21 23:07:18,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:07:18,457 INFO L93 Difference]: Finished difference Result 985923 states and 1083144 transitions. [2018-07-21 23:07:18,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:07:18,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2018-07-21 23:07:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:07:19,332 INFO L225 Difference]: With dead ends: 985923 [2018-07-21 23:07:19,332 INFO L226 Difference]: Without dead ends: 728435 [2018-07-21 23:07:19,494 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:07:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728435 states. [2018-07-21 23:07:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728435 to 308537. [2018-07-21 23:07:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308537 states. [2018-07-21 23:07:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308537 states to 308537 states and 338679 transitions. [2018-07-21 23:07:27,062 INFO L78 Accepts]: Start accepts. Automaton has 308537 states and 338679 transitions. Word has length 322 [2018-07-21 23:07:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:07:27,062 INFO L471 AbstractCegarLoop]: Abstraction has 308537 states and 338679 transitions. [2018-07-21 23:07:27,062 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:07:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 308537 states and 338679 transitions. [2018-07-21 23:07:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-21 23:07:27,083 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:07:27,084 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:07:27,084 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:07:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash -438947776, now seen corresponding path program 1 times [2018-07-21 23:07:27,085 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:07:27,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:07:27,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:27,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:07:27,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:07:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-07-21 23:07:27,403 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:07:27,403 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 23:07:27,403 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:07:27,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:07:27,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:07:27,403 INFO L87 Difference]: Start difference. First operand 308537 states and 338679 transitions. Second operand 4 states. [2018-07-21 23:07:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:07:37,713 INFO L93 Difference]: Finished difference Result 638217 states and 699888 transitions. [2018-07-21 23:07:37,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:07:37,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2018-07-21 23:07:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:07:38,065 INFO L225 Difference]: With dead ends: 638217 [2018-07-21 23:07:38,065 INFO L226 Difference]: Without dead ends: 329682 [2018-07-21 23:07:38,134 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 [2018-07-21 23:07:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329682 states. [2018-07-21 23:07:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329682 to 309761. [2018-07-21 23:07:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309761 states. [2018-07-21 23:07:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309761 states to 309761 states and 339567 transitions. [2018-07-21 23:07:42,456 INFO L78 Accepts]: Start accepts. Automaton has 309761 states and 339567 transitions. Word has length 333 [2018-07-21 23:07:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:07:42,456 INFO L471 AbstractCegarLoop]: Abstraction has 309761 states and 339567 transitions. [2018-07-21 23:07:42,456 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:07:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 309761 states and 339567 transitions. [2018-07-21 23:07:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-21 23:07:42,494 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:07:42,495 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:07:42,496 INFO L414 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:07:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1576662040, now seen corresponding path program 1 times [2018-07-21 23:07:42,497 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:07:42,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:07:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:42,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:07:42,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:07:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:07:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-07-21 23:07:43,645 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:07:43,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:07:43,645 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:07:43,645 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:07:43,645 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:07:43,646 INFO L87 Difference]: Start difference. First operand 309761 states and 339567 transitions. Second operand 4 states. [2018-07-21 23:07:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:07:48,350 INFO L93 Difference]: Finished difference Result 879342 states and 961071 transitions. [2018-07-21 23:07:48,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:07:48,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-07-21 23:07:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:07:49,091 INFO L225 Difference]: With dead ends: 879342 [2018-07-21 23:07:49,091 INFO L226 Difference]: Without dead ends: 569583 [2018-07-21 23:07:49,239 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 [2018-07-21 23:07:49,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569583 states. [2018-07-21 23:08:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569583 to 561585. [2018-07-21 23:08:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561585 states. [2018-07-21 23:08:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561585 states to 561585 states and 612564 transitions. [2018-07-21 23:08:06,305 INFO L78 Accepts]: Start accepts. Automaton has 561585 states and 612564 transitions. Word has length 339 [2018-07-21 23:08:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:06,305 INFO L471 AbstractCegarLoop]: Abstraction has 561585 states and 612564 transitions. [2018-07-21 23:08:06,305 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 23:08:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 561585 states and 612564 transitions. [2018-07-21 23:08:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-21 23:08:06,324 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:06,324 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-21 23:08:06,324 INFO L414 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash 201319111, now seen corresponding path program 1 times [2018-07-21 23:08:06,324 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:06,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:06,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:06,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:06,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-21 23:08:06,610 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 23:08:06,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 23:08:06,610 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 23:08:06,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 23:08:06,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 23:08:06,612 INFO L87 Difference]: Start difference. First operand 561585 states and 612564 transitions. Second operand 3 states. [2018-07-21 23:08:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 23:08:23,414 INFO L93 Difference]: Finished difference Result 1067071 states and 1165463 transitions. [2018-07-21 23:08:23,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 23:08:23,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2018-07-21 23:08:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 23:08:23,952 INFO L225 Difference]: With dead ends: 1067071 [2018-07-21 23:08:23,952 INFO L226 Difference]: Without dead ends: 505488 [2018-07-21 23:08:24,072 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 [2018-07-21 23:08:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505488 states. [2018-07-21 23:08:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505488 to 477206. [2018-07-21 23:08:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477206 states. [2018-07-21 23:08:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477206 states to 477206 states and 512530 transitions. [2018-07-21 23:08:32,050 INFO L78 Accepts]: Start accepts. Automaton has 477206 states and 512530 transitions. Word has length 339 [2018-07-21 23:08:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 23:08:32,050 INFO L471 AbstractCegarLoop]: Abstraction has 477206 states and 512530 transitions. [2018-07-21 23:08:32,050 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 23:08:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 477206 states and 512530 transitions. [2018-07-21 23:08:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-21 23:08:32,073 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 23:08:32,073 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 23:08:32,073 INFO L414 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 23:08:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2073234041, now seen corresponding path program 1 times [2018-07-21 23:08:32,073 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 23:08:32,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 23:08:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:32,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:32,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 23:08:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 263 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-07-21 23:08:32,506 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 23:08:32,506 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 [2018-07-21 23:08:32,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 23:08:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 23:08:32,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 23:08:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-21 23:08:33,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 23:08:33,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-07-21 23:08:33,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 23:08:33,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 23:08:33,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 23:08:33,488 INFO L87 Difference]: Start difference. First operand 477206 states and 512530 transitions. Second operand 4 states. Received shutdown request... [2018-07-21 23:08:40,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 23:08:40,687 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 23:08:40,692 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 23:08:40,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:08:40 BoogieIcfgContainer [2018-07-21 23:08:40,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 23:08:40,693 INFO L168 Benchmark]: Toolchain (without parser) took 194375.30 ms. Allocated memory was 308.3 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 248.5 MB in the beginning and 2.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,694 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 308.3 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 23:08:40,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1559.41 ms. Allocated memory is still 308.3 MB. Free memory was 248.5 MB in the beginning and 249.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.47 ms. Allocated memory is still 308.3 MB. Free memory was 249.7 MB in the beginning and 233.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,695 INFO L168 Benchmark]: Boogie Preprocessor took 442.46 ms. Allocated memory was 308.3 MB in the beginning and 405.3 MB in the end (delta: 97.0 MB). Free memory was 233.6 MB in the beginning and 363.6 MB in the end (delta: -130.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,695 INFO L168 Benchmark]: RCFGBuilder took 6030.85 ms. Allocated memory was 405.3 MB in the beginning and 472.4 MB in the end (delta: 67.1 MB). Free memory was 363.6 MB in the beginning and 383.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 150.6 MB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,696 INFO L168 Benchmark]: TraceAbstraction took 185461.81 ms. Allocated memory was 472.4 MB in the beginning and 3.6 GB in the end (delta: 3.1 GB). Free memory was 383.7 MB in the beginning and 2.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.9 GB. Max. memory is 5.3 GB. [2018-07-21 23:08:40,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 308.3 MB. Free memory is still 273.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1559.41 ms. Allocated memory is still 308.3 MB. Free memory was 248.5 MB in the beginning and 249.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 73.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 166.47 ms. Allocated memory is still 308.3 MB. Free memory was 249.7 MB in the beginning and 233.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 442.46 ms. Allocated memory was 308.3 MB in the beginning and 405.3 MB in the end (delta: 97.0 MB). Free memory was 233.6 MB in the beginning and 363.6 MB in the end (delta: -130.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 6030.85 ms. Allocated memory was 405.3 MB in the beginning and 472.4 MB in the end (delta: 67.1 MB). Free memory was 363.6 MB in the beginning and 383.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 150.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 185461.81 ms. Allocated memory was 472.4 MB in the beginning and 3.6 GB in the end (delta: 3.1 GB). Free memory was 383.7 MB in the beginning and 2.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.9 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1482]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1482). Cancelled while BasicCegarLoop was constructing difference of abstraction (477206states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (242245 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 185.3s OverallTime, 21 OverallIterations, 7 TraceHistogramMax, 107.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5888 SDtfs, 14260 SDslu, 5316 SDs, 0 SdLazy, 19002 SolverSat, 4014 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 891 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561585occurred in iteration=19, 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: 66.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 705611 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 6101 NumberOfCodeBlocks, 6101 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 6077 ConstructedInterpolants, 0 QuantifiedInterpolants, 3035747 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1608 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 24 InterpolantComputations, 21 PerfectInterpolantSequences, 3736/3750 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/Problem03_label37_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_23-08-40-718.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem03_label37_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_23-08-40-718.csv Completed graceful shutdown