java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:07:13,070 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:07:13,072 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:07:13,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:07:13,085 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:07:13,086 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:07:13,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:07:13,089 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:07:13,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:07:13,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:07:13,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:07:13,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:07:13,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:07:13,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:07:13,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:07:13,100 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:07:13,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:07:13,107 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:07:13,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:07:13,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:07:13,113 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:07:13,114 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:07:13,121 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:07:13,122 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:07:13,122 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:07:13,123 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:07:13,125 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:07:13,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:07:13,126 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:07:13,127 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:07:13,127 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:07:13,128 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:07:13,130 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:07:13,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:07:13,157 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:07:13,158 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:07:13,158 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:07:13,158 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:07:13,159 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:07:13,159 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:07:13,159 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:07:13,159 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:07:13,160 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:07:13,161 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:07:13,161 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:07:13,161 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:07:13,161 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:07:13,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:07:13,162 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:07:13,162 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:07:13,162 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:07:13,162 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:07:13,162 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:07:13,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:07:13,163 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:07:13,163 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:07:13,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:07:13,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:07:13,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:07:13,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:07:13,240 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:07:13,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-06 19:07:13,300 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6b02be9/e714fbbe26524d6caf64da6f8a000fc5/FLAGa5469c2a6 [2018-11-06 19:07:14,014 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:07:14,015 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-11-06 19:07:14,048 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6b02be9/e714fbbe26524d6caf64da6f8a000fc5/FLAGa5469c2a6 [2018-11-06 19:07:14,069 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6b02be9/e714fbbe26524d6caf64da6f8a000fc5 [2018-11-06 19:07:14,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:07:14,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:07:14,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:14,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:07:14,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:07:14,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:14" (1/1) ... [2018-11-06 19:07:14,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de4c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:14, skipping insertion in model container [2018-11-06 19:07:14,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:14" (1/1) ... [2018-11-06 19:07:14,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:07:14,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:07:15,609 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:15,614 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:07:16,237 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:16,275 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:07:16,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16 WrapperNode [2018-11-06 19:07:16,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:16,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:16,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:07:16,278 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:07:16,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:16,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:16,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:16,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:07:16,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:07:16,909 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:07:16,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:16,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:16,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:16,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:17,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:17,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:17,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... [2018-11-06 19:07:17,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:07:17,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:07:17,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:07:17,241 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:07:17,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:07:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:07:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:07:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:07:25,485 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:07:25,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:25 BoogieIcfgContainer [2018-11-06 19:07:25,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:07:25,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:07:25,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:07:25,490 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:07:25,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:07:14" (1/3) ... [2018-11-06 19:07:25,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268f06d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:25, skipping insertion in model container [2018-11-06 19:07:25,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:16" (2/3) ... [2018-11-06 19:07:25,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268f06d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:25, skipping insertion in model container [2018-11-06 19:07:25,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:25" (3/3) ... [2018-11-06 19:07:25,494 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-11-06 19:07:25,504 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:07:25,514 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:07:25,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:07:25,577 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:07:25,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:07:25,578 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:07:25,578 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:07:25,578 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:07:25,578 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:07:25,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:07:25,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:07:25,579 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:07:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 19:07:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-06 19:07:25,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:25,628 INFO L375 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] [2018-11-06 19:07:25,630 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:25,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:25,638 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-11-06 19:07:25,640 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:25,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:25,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:25,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:25,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:26,055 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 19:07:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:26,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:26,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:26,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:26,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:26,091 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 19:07:38,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:38,321 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-11-06 19:07:38,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:38,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-06 19:07:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:38,365 INFO L225 Difference]: With dead ends: 3162 [2018-11-06 19:07:38,365 INFO L226 Difference]: Without dead ends: 2336 [2018-11-06 19:07:38,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-11-06 19:07:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-11-06 19:07:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-11-06 19:07:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-11-06 19:07:38,506 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 22 [2018-11-06 19:07:38,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:38,507 INFO L480 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-11-06 19:07:38,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:38,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-11-06 19:07:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-06 19:07:38,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:38,512 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:38,512 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:38,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash 797469423, now seen corresponding path program 1 times [2018-11-06 19:07:38,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:38,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:38,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:38,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:38,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:38,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:38,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:38,771 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-11-06 19:07:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:49,316 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-11-06 19:07:49,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:49,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-11-06 19:07:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:49,342 INFO L225 Difference]: With dead ends: 6142 [2018-11-06 19:07:49,342 INFO L226 Difference]: Without dead ends: 4576 [2018-11-06 19:07:49,346 INFO L604 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 [2018-11-06 19:07:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-11-06 19:07:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-11-06 19:07:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-11-06 19:07:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-11-06 19:07:49,434 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 98 [2018-11-06 19:07:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:49,435 INFO L480 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-11-06 19:07:49,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-11-06 19:07:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-06 19:07:49,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:49,439 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:49,439 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:49,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash 52688714, now seen corresponding path program 1 times [2018-11-06 19:07:49,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:49,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:49,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:49,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:49,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:50,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:50,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:07:50,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:07:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:07:50,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:07:50,068 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-11-06 19:08:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:00,206 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-11-06 19:08:00,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:08:00,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-06 19:08:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:00,259 INFO L225 Difference]: With dead ends: 15166 [2018-11-06 19:08:00,259 INFO L226 Difference]: Without dead ends: 10592 [2018-11-06 19:08:00,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:08:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-11-06 19:08:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-11-06 19:08:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-11-06 19:08:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-11-06 19:08:00,461 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 100 [2018-11-06 19:08:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:00,461 INFO L480 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-11-06 19:08:00,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:08:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-11-06 19:08:00,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-06 19:08:00,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:00,466 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:00,467 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:00,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:00,467 INFO L82 PathProgramCache]: Analyzing trace with hash -283688278, now seen corresponding path program 1 times [2018-11-06 19:08:00,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:00,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:00,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:00,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:00,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:01,044 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 19:08:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:01,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:01,159 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:08:01,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:01,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:01,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:08:01,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 19:08:01,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:08:01,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:08:01,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:08:01,448 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-11-06 19:08:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:18,453 INFO L93 Difference]: Finished difference Result 39231 states and 53505 transitions. [2018-11-06 19:08:18,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:08:18,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2018-11-06 19:08:18,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:18,551 INFO L225 Difference]: With dead ends: 39231 [2018-11-06 19:08:18,552 INFO L226 Difference]: Without dead ends: 29393 [2018-11-06 19:08:18,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:08:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29393 states. [2018-11-06 19:08:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29393 to 29393. [2018-11-06 19:08:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29393 states. [2018-11-06 19:08:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29393 states to 29393 states and 37591 transitions. [2018-11-06 19:08:19,126 INFO L78 Accepts]: Start accepts. Automaton has 29393 states and 37591 transitions. Word has length 164 [2018-11-06 19:08:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:19,126 INFO L480 AbstractCegarLoop]: Abstraction has 29393 states and 37591 transitions. [2018-11-06 19:08:19,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:08:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29393 states and 37591 transitions. [2018-11-06 19:08:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-06 19:08:19,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:19,138 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:08:19,139 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:19,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1971168649, now seen corresponding path program 1 times [2018-11-06 19:08:19,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:19,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:19,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:19,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:19,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:19,644 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-11-06 19:08:19,927 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-11-06 19:08:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:20,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:20,052 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:08:20,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:20,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:20,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:08:20,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-06 19:08:20,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:08:20,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:08:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:08:20,246 INFO L87 Difference]: Start difference. First operand 29393 states and 37591 transitions. Second operand 6 states. [2018-11-06 19:08:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:34,553 INFO L93 Difference]: Finished difference Result 92656 states and 113907 transitions. [2018-11-06 19:08:34,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:08:34,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-06 19:08:34,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:34,663 INFO L225 Difference]: With dead ends: 92656 [2018-11-06 19:08:34,663 INFO L226 Difference]: Without dead ends: 61758 [2018-11-06 19:08:34,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:08:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61758 states. [2018-11-06 19:08:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61758 to 38416. [2018-11-06 19:08:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38416 states. [2018-11-06 19:08:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38416 states to 38416 states and 45552 transitions. [2018-11-06 19:08:35,312 INFO L78 Accepts]: Start accepts. Automaton has 38416 states and 45552 transitions. Word has length 204 [2018-11-06 19:08:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:35,313 INFO L480 AbstractCegarLoop]: Abstraction has 38416 states and 45552 transitions. [2018-11-06 19:08:35,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:08:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38416 states and 45552 transitions. [2018-11-06 19:08:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-06 19:08:35,317 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:35,318 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:35,318 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:35,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:35,319 INFO L82 PathProgramCache]: Analyzing trace with hash -22436739, now seen corresponding path program 1 times [2018-11-06 19:08:35,319 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:35,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:35,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:35,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:35,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:35,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:35,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:08:35,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:08:35,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:08:35,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:08:35,731 INFO L87 Difference]: Start difference. First operand 38416 states and 45552 transitions. Second operand 4 states. [2018-11-06 19:08:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:42,646 INFO L93 Difference]: Finished difference Result 76830 states and 91107 transitions. [2018-11-06 19:08:42,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:08:42,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-11-06 19:08:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:42,717 INFO L225 Difference]: With dead ends: 76830 [2018-11-06 19:08:42,718 INFO L226 Difference]: Without dead ends: 39168 [2018-11-06 19:08:42,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:08:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-11-06 19:08:43,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-11-06 19:08:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-11-06 19:08:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 45383 transitions. [2018-11-06 19:08:43,543 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 45383 transitions. Word has length 241 [2018-11-06 19:08:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:43,544 INFO L480 AbstractCegarLoop]: Abstraction has 39168 states and 45383 transitions. [2018-11-06 19:08:43,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:08:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 45383 transitions. [2018-11-06 19:08:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-06 19:08:43,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:43,552 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:43,552 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:43,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:43,552 INFO L82 PathProgramCache]: Analyzing trace with hash 55630803, now seen corresponding path program 1 times [2018-11-06 19:08:43,553 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:43,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:43,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:43,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:43,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-06 19:08:44,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:44,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:08:44,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:08:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:08:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:44,006 INFO L87 Difference]: Start difference. First operand 39168 states and 45383 transitions. Second operand 3 states. [2018-11-06 19:08:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:48,903 INFO L93 Difference]: Finished difference Result 77582 states and 90007 transitions. [2018-11-06 19:08:48,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:08:48,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-11-06 19:08:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:48,952 INFO L225 Difference]: With dead ends: 77582 [2018-11-06 19:08:48,952 INFO L226 Difference]: Without dead ends: 39168 [2018-11-06 19:08:48,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-11-06 19:08:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-11-06 19:08:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-11-06 19:08:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 44171 transitions. [2018-11-06 19:08:49,410 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 44171 transitions. Word has length 301 [2018-11-06 19:08:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:49,411 INFO L480 AbstractCegarLoop]: Abstraction has 39168 states and 44171 transitions. [2018-11-06 19:08:49,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:08:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 44171 transitions. [2018-11-06 19:08:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-11-06 19:08:49,441 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:49,442 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:49,442 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:49,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -50555018, now seen corresponding path program 1 times [2018-11-06 19:08:49,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:49,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:49,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:49,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:49,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 19:08:50,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:50,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:08:50,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:08:50,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:08:50,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:08:50,323 INFO L87 Difference]: Start difference. First operand 39168 states and 44171 transitions. Second operand 5 states. [2018-11-06 19:09:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:00,856 INFO L93 Difference]: Finished difference Result 139295 states and 161110 transitions. [2018-11-06 19:09:00,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:09:00,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 533 [2018-11-06 19:09:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:00,972 INFO L225 Difference]: With dead ends: 139295 [2018-11-06 19:09:00,972 INFO L226 Difference]: Without dead ends: 100881 [2018-11-06 19:09:01,009 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:09:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100881 states. [2018-11-06 19:09:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100881 to 75313. [2018-11-06 19:09:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75313 states. [2018-11-06 19:09:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75313 states to 75313 states and 85208 transitions. [2018-11-06 19:09:01,808 INFO L78 Accepts]: Start accepts. Automaton has 75313 states and 85208 transitions. Word has length 533 [2018-11-06 19:09:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:01,809 INFO L480 AbstractCegarLoop]: Abstraction has 75313 states and 85208 transitions. [2018-11-06 19:09:01,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:09:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 75313 states and 85208 transitions. [2018-11-06 19:09:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-11-06 19:09:01,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:01,880 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:01,881 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:01,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash -402249437, now seen corresponding path program 1 times [2018-11-06 19:09:01,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:01,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:01,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:01,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:01,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 262 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-06 19:09:02,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:09:02,898 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:09:02,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:03,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:09:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-06 19:09:03,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:09:03,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:09:03,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:03,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:03,246 INFO L87 Difference]: Start difference. First operand 75313 states and 85208 transitions. Second operand 4 states. [2018-11-06 19:09:10,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:10,546 INFO L93 Difference]: Finished difference Result 197346 states and 225334 transitions. [2018-11-06 19:09:10,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:10,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 660 [2018-11-06 19:09:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:10,692 INFO L225 Difference]: With dead ends: 197346 [2018-11-06 19:09:10,692 INFO L226 Difference]: Without dead ends: 122787 [2018-11-06 19:09:10,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 660 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:10,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122787 states. [2018-11-06 19:09:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122787 to 77569. [2018-11-06 19:09:11,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77569 states. [2018-11-06 19:09:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77569 states to 77569 states and 85276 transitions. [2018-11-06 19:09:11,619 INFO L78 Accepts]: Start accepts. Automaton has 77569 states and 85276 transitions. Word has length 660 [2018-11-06 19:09:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:11,620 INFO L480 AbstractCegarLoop]: Abstraction has 77569 states and 85276 transitions. [2018-11-06 19:09:11,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 77569 states and 85276 transitions. [2018-11-06 19:09:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-11-06 19:09:11,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:11,666 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:11,667 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:11,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2070167299, now seen corresponding path program 1 times [2018-11-06 19:09:11,667 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:11,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:11,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:11,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:11,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-06 19:09:12,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:12,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:09:12,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:09:12,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:09:12,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:09:12,206 INFO L87 Difference]: Start difference. First operand 77569 states and 85276 transitions. Second operand 3 states. [2018-11-06 19:09:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:16,587 INFO L93 Difference]: Finished difference Result 154384 states and 169793 transitions. [2018-11-06 19:09:16,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:09:16,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 738 [2018-11-06 19:09:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:16,685 INFO L225 Difference]: With dead ends: 154384 [2018-11-06 19:09:16,685 INFO L226 Difference]: Without dead ends: 77569 [2018-11-06 19:09:16,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:09:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77569 states. [2018-11-06 19:09:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77569 to 77569. [2018-11-06 19:09:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77569 states. [2018-11-06 19:09:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77569 states to 77569 states and 82726 transitions. [2018-11-06 19:09:17,607 INFO L78 Accepts]: Start accepts. Automaton has 77569 states and 82726 transitions. Word has length 738 [2018-11-06 19:09:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:17,607 INFO L480 AbstractCegarLoop]: Abstraction has 77569 states and 82726 transitions. [2018-11-06 19:09:17,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:09:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 77569 states and 82726 transitions. [2018-11-06 19:09:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-11-06 19:09:17,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:17,647 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:17,648 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:17,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash 46396595, now seen corresponding path program 1 times [2018-11-06 19:09:17,648 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:17,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 19:09:18,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:18,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:18,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:18,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:18,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:18,530 INFO L87 Difference]: Start difference. First operand 77569 states and 82726 transitions. Second operand 4 states. [2018-11-06 19:09:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:25,430 INFO L93 Difference]: Finished difference Result 184464 states and 196567 transitions. [2018-11-06 19:09:25,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:25,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 770 [2018-11-06 19:09:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:25,537 INFO L225 Difference]: With dead ends: 184464 [2018-11-06 19:09:25,537 INFO L226 Difference]: Without dead ends: 97848 [2018-11-06 19:09:25,574 INFO L604 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 [2018-11-06 19:09:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97848 states. [2018-11-06 19:09:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97848 to 96344. [2018-11-06 19:09:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96344 states. [2018-11-06 19:09:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96344 states to 96344 states and 101300 transitions. [2018-11-06 19:09:26,344 INFO L78 Accepts]: Start accepts. Automaton has 96344 states and 101300 transitions. Word has length 770 [2018-11-06 19:09:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:26,346 INFO L480 AbstractCegarLoop]: Abstraction has 96344 states and 101300 transitions. [2018-11-06 19:09:26,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 96344 states and 101300 transitions. [2018-11-06 19:09:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-11-06 19:09:26,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:26,396 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:26,396 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:26,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:26,397 INFO L82 PathProgramCache]: Analyzing trace with hash 25904175, now seen corresponding path program 1 times [2018-11-06 19:09:26,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:26,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:26,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:26,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:26,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 774 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:09:30,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:09:30,807 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:09:30,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:31,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:09:31,933 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 23 [2018-11-06 19:09:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 605 proven. 174 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:09:35,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:09:35,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 15 [2018-11-06 19:09:35,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 19:09:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 19:09:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:09:35,412 INFO L87 Difference]: Start difference. First operand 96344 states and 101300 transitions. Second operand 15 states. [2018-11-06 19:10:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:17,723 INFO L93 Difference]: Finished difference Result 251874 states and 266261 transitions. [2018-11-06 19:10:17,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-06 19:10:17,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 874 [2018-11-06 19:10:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:17,894 INFO L225 Difference]: With dead ends: 251874 [2018-11-06 19:10:17,894 INFO L226 Difference]: Without dead ends: 152354 [2018-11-06 19:10:17,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=271, Invalid=599, Unknown=0, NotChecked=0, Total=870 [2018-11-06 19:10:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152354 states. [2018-11-06 19:10:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152354 to 142111. [2018-11-06 19:10:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142111 states. [2018-11-06 19:10:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142111 states to 142111 states and 147705 transitions. [2018-11-06 19:10:19,105 INFO L78 Accepts]: Start accepts. Automaton has 142111 states and 147705 transitions. Word has length 874 [2018-11-06 19:10:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:19,105 INFO L480 AbstractCegarLoop]: Abstraction has 142111 states and 147705 transitions. [2018-11-06 19:10:19,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-06 19:10:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 142111 states and 147705 transitions. [2018-11-06 19:10:19,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-11-06 19:10:19,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:19,159 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:19,159 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:19,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:19,160 INFO L82 PathProgramCache]: Analyzing trace with hash 781488682, now seen corresponding path program 1 times [2018-11-06 19:10:19,160 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:19,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:19,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:19,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:19,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-06 19:10:21,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:21,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:10:21,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:10:21,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:10:21,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:10:21,038 INFO L87 Difference]: Start difference. First operand 142111 states and 147705 transitions. Second operand 5 states. [2018-11-06 19:10:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:31,547 INFO L93 Difference]: Finished difference Result 379754 states and 396361 transitions. [2018-11-06 19:10:31,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:10:31,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 931 [2018-11-06 19:10:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:31,816 INFO L225 Difference]: With dead ends: 379754 [2018-11-06 19:10:31,816 INFO L226 Difference]: Without dead ends: 238397 [2018-11-06 19:10:31,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:10:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238397 states. [2018-11-06 19:10:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238397 to 189460. [2018-11-06 19:10:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189460 states. [2018-11-06 19:10:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189460 states to 189460 states and 197292 transitions. [2018-11-06 19:10:35,287 INFO L78 Accepts]: Start accepts. Automaton has 189460 states and 197292 transitions. Word has length 931 [2018-11-06 19:10:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:35,287 INFO L480 AbstractCegarLoop]: Abstraction has 189460 states and 197292 transitions. [2018-11-06 19:10:35,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:10:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 189460 states and 197292 transitions. [2018-11-06 19:10:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2018-11-06 19:10:35,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:35,351 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:35,351 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:35,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:35,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1117045899, now seen corresponding path program 1 times [2018-11-06 19:10:35,352 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:35,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:35,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:35,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:35,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-06 19:10:36,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:36,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:10:36,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:10:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:10:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:36,491 INFO L87 Difference]: Start difference. First operand 189460 states and 197292 transitions. Second operand 4 states. [2018-11-06 19:10:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:44,520 INFO L93 Difference]: Finished difference Result 384182 states and 399958 transitions. [2018-11-06 19:10:44,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:44,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 939 [2018-11-06 19:10:44,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:44,712 INFO L225 Difference]: With dead ends: 384182 [2018-11-06 19:10:44,712 INFO L226 Difference]: Without dead ends: 195476 [2018-11-06 19:10:44,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195476 states. [2018-11-06 19:10:47,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195476 to 189065. [2018-11-06 19:10:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189065 states. [2018-11-06 19:10:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189065 states to 189065 states and 196170 transitions. [2018-11-06 19:10:47,553 INFO L78 Accepts]: Start accepts. Automaton has 189065 states and 196170 transitions. Word has length 939 [2018-11-06 19:10:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:47,554 INFO L480 AbstractCegarLoop]: Abstraction has 189065 states and 196170 transitions. [2018-11-06 19:10:47,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:10:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 189065 states and 196170 transitions. [2018-11-06 19:10:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2018-11-06 19:10:47,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:47,613 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:47,614 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:47,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1186952910, now seen corresponding path program 1 times [2018-11-06 19:10:47,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:47,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:47,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:47,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:47,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-11-06 19:10:49,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:49,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:10:49,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:10:49,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:10:49,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:10:49,535 INFO L87 Difference]: Start difference. First operand 189065 states and 196170 transitions. Second operand 6 states. [2018-11-06 19:11:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:11:00,432 INFO L93 Difference]: Finished difference Result 412716 states and 428464 transitions. [2018-11-06 19:11:00,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:11:00,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 994 [2018-11-06 19:11:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:11:00,703 INFO L225 Difference]: With dead ends: 412716 [2018-11-06 19:11:00,703 INFO L226 Difference]: Without dead ends: 224405 [2018-11-06 19:11:00,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:11:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224405 states. Received shutdown request... [2018-11-06 19:11:06,282 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:11:06,287 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:11:06,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:11:06 BoogieIcfgContainer [2018-11-06 19:11:06,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:11:06,288 INFO L168 Benchmark]: Toolchain (without parser) took 232206.56 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,290 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:11:06,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2190.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,291 INFO L168 Benchmark]: Boogie Procedure Inliner took 630.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -967.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,292 INFO L168 Benchmark]: Boogie Preprocessor took 331.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,293 INFO L168 Benchmark]: RCFGBuilder took 8245.35 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 230.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -206.9 MB). Peak memory consumption was 636.2 MB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,294 INFO L168 Benchmark]: TraceAbstraction took 220800.89 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-06 19:11:06,303 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2190.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 630.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -967.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 331.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8245.35 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 230.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -206.9 MB). Peak memory consumption was 636.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220800.89 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 220.7s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 179.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9862 SDtfs, 41562 SDslu, 1984 SDs, 0 SdLazy, 114453 SolverSat, 16697 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2029 GetRequests, 1939 SyntacticMatches, 20 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189460occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 161991 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 9471 NumberOfCodeBlocks, 9471 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9452 ConstructedInterpolants, 413 QuantifiedInterpolants, 38879268 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2340 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 7477/7669 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown