java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem11_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:03:16,019 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:03:16,021 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:03:16,033 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:03:16,033 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:03:16,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:03:16,036 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:03:16,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:03:16,039 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:03:16,040 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:03:16,040 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:03:16,041 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:03:16,042 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:03:16,043 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:03:16,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:03:16,045 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:03:16,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:03:16,050 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:03:16,054 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:03:16,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:03:16,058 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:03:16,060 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:03:16,065 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:03:16,065 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:03:16,065 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:03:16,066 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:03:16,068 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:03:16,070 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:03:16,071 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:03:16,072 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:03:16,072 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:03:16,073 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:03:16,077 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:03:16,102 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:03:16,103 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:03:16,103 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:03:16,107 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:03:16,108 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:03:16,108 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:03:16,109 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:03:16,109 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:03:16,109 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:03:16,109 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:03:16,109 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:03:16,110 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:03:16,110 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:03:16,110 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:03:16,110 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:03:16,110 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:03:16,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:03:16,111 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:03:16,111 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:03:16,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:03:16,111 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:03:16,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:03:16,112 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:03:16,112 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:03:16,112 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:03:16,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:03:16,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:03:16,113 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:03:16,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:03:16,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:03:16,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:03:16,191 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:03:16,192 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:03:16,193 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-24 16:03:16,257 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f60d73a7/7109d4d15bbc457db37d35d9c6d1c22e/FLAGc93bb4eed [2018-10-24 16:03:16,914 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:03:16,917 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-24 16:03:16,944 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f60d73a7/7109d4d15bbc457db37d35d9c6d1c22e/FLAGc93bb4eed [2018-10-24 16:03:16,962 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f60d73a7/7109d4d15bbc457db37d35d9c6d1c22e [2018-10-24 16:03:16,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:03:16,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:03:16,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:03:16,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:03:16,984 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:03:16,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:03:16" (1/1) ... [2018-10-24 16:03:16,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:16, skipping insertion in model container [2018-10-24 16:03:16,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:03:16" (1/1) ... [2018-10-24 16:03:16,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:03:17,087 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:03:17,701 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:03:17,708 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:03:17,947 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:03:17,968 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:03:17,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17 WrapperNode [2018-10-24 16:03:17,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:03:17,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:03:17,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:03:17,971 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:03:17,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:03:18,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:03:18,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:03:18,248 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:03:18,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... [2018-10-24 16:03:18,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:03:18,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:03:18,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:03:18,411 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:03:18,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:03:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:03:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:03:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:03:22,753 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:03:22,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:03:22 BoogieIcfgContainer [2018-10-24 16:03:22,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:03:22,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:03:22,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:03:22,759 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:03:22,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:03:16" (1/3) ... [2018-10-24 16:03:22,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0422cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:03:22, skipping insertion in model container [2018-10-24 16:03:22,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:03:17" (2/3) ... [2018-10-24 16:03:22,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0422cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:03:22, skipping insertion in model container [2018-10-24 16:03:22,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:03:22" (3/3) ... [2018-10-24 16:03:22,762 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label10_true-unreach-call.c [2018-10-24 16:03:22,772 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:03:22,781 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:03:22,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:03:22,835 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:03:22,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:03:22,836 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:03:22,836 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:03:22,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:03:22,836 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:03:22,837 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:03:22,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:03:22,837 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:03:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:03:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 16:03:22,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:22,872 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, 1] [2018-10-24 16:03:22,875 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:22,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-10-24 16:03:22,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:22,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:22,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:22,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:22,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:23,289 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:03:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:23,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:23,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:23,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:23,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:23,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:23,340 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:03:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:26,916 INFO L93 Difference]: Finished difference Result 977 states and 1747 transitions. [2018-10-24 16:03:26,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:26,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-24 16:03:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:26,943 INFO L225 Difference]: With dead ends: 977 [2018-10-24 16:03:26,944 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 16:03:26,949 INFO L605 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 [2018-10-24 16:03:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 16:03:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683. [2018-10-24 16:03:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-24 16:03:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1060 transitions. [2018-10-24 16:03:27,047 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1060 transitions. Word has length 23 [2018-10-24 16:03:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:27,047 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1060 transitions. [2018-10-24 16:03:27,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1060 transitions. [2018-10-24 16:03:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 16:03:27,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:27,051 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 16:03:27,052 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:27,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:27,052 INFO L82 PathProgramCache]: Analyzing trace with hash 487547954, now seen corresponding path program 1 times [2018-10-24 16:03:27,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:27,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:27,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:27,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:27,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:27,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:27,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:27,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:27,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:27,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:27,323 INFO L87 Difference]: Start difference. First operand 683 states and 1060 transitions. Second operand 4 states. [2018-10-24 16:03:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:32,230 INFO L93 Difference]: Finished difference Result 2492 states and 3982 transitions. [2018-10-24 16:03:32,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:32,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-10-24 16:03:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:32,244 INFO L225 Difference]: With dead ends: 2492 [2018-10-24 16:03:32,244 INFO L226 Difference]: Without dead ends: 1811 [2018-10-24 16:03:32,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2018-10-24 16:03:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1795. [2018-10-24 16:03:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-24 16:03:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2640 transitions. [2018-10-24 16:03:32,297 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2640 transitions. Word has length 92 [2018-10-24 16:03:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:32,298 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2640 transitions. [2018-10-24 16:03:32,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2640 transitions. [2018-10-24 16:03:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 16:03:32,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:32,308 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 16:03:32,308 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:32,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:32,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2043482925, now seen corresponding path program 1 times [2018-10-24 16:03:32,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:32,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:32,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:32,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:32,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:32,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:32,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:03:32,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:32,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:32,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:32,595 INFO L87 Difference]: Start difference. First operand 1795 states and 2640 transitions. Second operand 4 states. [2018-10-24 16:03:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:35,093 INFO L93 Difference]: Finished difference Result 6742 states and 10027 transitions. [2018-10-24 16:03:35,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:35,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 16:03:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:35,119 INFO L225 Difference]: With dead ends: 6742 [2018-10-24 16:03:35,119 INFO L226 Difference]: Without dead ends: 4949 [2018-10-24 16:03:35,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2018-10-24 16:03:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4949. [2018-10-24 16:03:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4949 states. [2018-10-24 16:03:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 6496 transitions. [2018-10-24 16:03:35,217 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 6496 transitions. Word has length 118 [2018-10-24 16:03:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:35,217 INFO L481 AbstractCegarLoop]: Abstraction has 4949 states and 6496 transitions. [2018-10-24 16:03:35,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 6496 transitions. [2018-10-24 16:03:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 16:03:35,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:35,220 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 16:03:35,221 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:35,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1055735476, now seen corresponding path program 1 times [2018-10-24 16:03:35,221 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:35,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:35,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:35,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:35,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:35,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:35,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:03:35,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:35,534 INFO L87 Difference]: Start difference. First operand 4949 states and 6496 transitions. Second operand 4 states. [2018-10-24 16:03:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:42,434 INFO L93 Difference]: Finished difference Result 13991 states and 18823 transitions. [2018-10-24 16:03:42,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:42,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 16:03:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:42,475 INFO L225 Difference]: With dead ends: 13991 [2018-10-24 16:03:42,475 INFO L226 Difference]: Without dead ends: 9229 [2018-10-24 16:03:42,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9229 states. [2018-10-24 16:03:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9229 to 6981. [2018-10-24 16:03:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6981 states. [2018-10-24 16:03:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8740 transitions. [2018-10-24 16:03:42,617 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8740 transitions. Word has length 151 [2018-10-24 16:03:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:42,618 INFO L481 AbstractCegarLoop]: Abstraction has 6981 states and 8740 transitions. [2018-10-24 16:03:42,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8740 transitions. [2018-10-24 16:03:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-24 16:03:42,623 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:42,624 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:42,624 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:42,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:42,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1905687981, now seen corresponding path program 1 times [2018-10-24 16:03:42,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:42,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:42,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:42,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:42,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-24 16:03:43,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:03:43,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:03:43,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:03:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:03:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:03:43,044 INFO L87 Difference]: Start difference. First operand 6981 states and 8740 transitions. Second operand 4 states. [2018-10-24 16:03:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:45,559 INFO L93 Difference]: Finished difference Result 16015 states and 20274 transitions. [2018-10-24 16:03:45,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:03:45,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-10-24 16:03:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:45,596 INFO L225 Difference]: With dead ends: 16015 [2018-10-24 16:03:45,596 INFO L226 Difference]: Without dead ends: 9221 [2018-10-24 16:03:45,606 INFO L605 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 [2018-10-24 16:03:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9221 states. [2018-10-24 16:03:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9221 to 9201. [2018-10-24 16:03:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9201 states. [2018-10-24 16:03:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9201 states to 9201 states and 11261 transitions. [2018-10-24 16:03:45,748 INFO L78 Accepts]: Start accepts. Automaton has 9201 states and 11261 transitions. Word has length 229 [2018-10-24 16:03:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:45,748 INFO L481 AbstractCegarLoop]: Abstraction has 9201 states and 11261 transitions. [2018-10-24 16:03:45,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:03:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9201 states and 11261 transitions. [2018-10-24 16:03:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 16:03:45,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:45,755 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:45,755 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:45,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1116672364, now seen corresponding path program 1 times [2018-10-24 16:03:45,756 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:45,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:45,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:45,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:45,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 90 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:46,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:03:46,435 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:03:46,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:03:46,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:03:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 41 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:03:47,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:03:47,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-10-24 16:03:47,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:03:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:03:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:03:47,497 INFO L87 Difference]: Start difference. First operand 9201 states and 11261 transitions. Second operand 8 states. [2018-10-24 16:03:47,843 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 12 [2018-10-24 16:03:49,582 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2018-10-24 16:03:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:03:59,321 INFO L93 Difference]: Finished difference Result 28657 states and 35384 transitions. [2018-10-24 16:03:59,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:03:59,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2018-10-24 16:03:59,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:03:59,367 INFO L225 Difference]: With dead ends: 28657 [2018-10-24 16:03:59,367 INFO L226 Difference]: Without dead ends: 18335 [2018-10-24 16:03:59,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-10-24 16:03:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18335 states. [2018-10-24 16:03:59,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18335 to 15899. [2018-10-24 16:03:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15899 states. [2018-10-24 16:03:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15899 states to 15899 states and 18496 transitions. [2018-10-24 16:03:59,830 INFO L78 Accepts]: Start accepts. Automaton has 15899 states and 18496 transitions. Word has length 237 [2018-10-24 16:03:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:03:59,831 INFO L481 AbstractCegarLoop]: Abstraction has 15899 states and 18496 transitions. [2018-10-24 16:03:59,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 16:03:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15899 states and 18496 transitions. [2018-10-24 16:03:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 16:03:59,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:03:59,838 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:03:59,838 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:03:59,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:03:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash -470884986, now seen corresponding path program 1 times [2018-10-24 16:03:59,839 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:03:59,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:03:59,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:59,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:03:59,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:03:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:00,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:04:00,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:04:00,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:00,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:04:01,013 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 16:04:01,240 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:04:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 75 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:01,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:04:01,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2018-10-24 16:04:01,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:04:01,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:04:01,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:04:01,438 INFO L87 Difference]: Start difference. First operand 15899 states and 18496 transitions. Second operand 11 states. [2018-10-24 16:04:06,735 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-10-24 16:04:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:15,697 INFO L93 Difference]: Finished difference Result 45734 states and 53551 transitions. [2018-10-24 16:04:15,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 16:04:15,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2018-10-24 16:04:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:15,752 INFO L225 Difference]: With dead ends: 45734 [2018-10-24 16:04:15,753 INFO L226 Difference]: Without dead ends: 30207 [2018-10-24 16:04:15,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2018-10-24 16:04:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30207 states. [2018-10-24 16:04:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30207 to 23282. [2018-10-24 16:04:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23282 states. [2018-10-24 16:04:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23282 states to 23282 states and 26180 transitions. [2018-10-24 16:04:16,158 INFO L78 Accepts]: Start accepts. Automaton has 23282 states and 26180 transitions. Word has length 239 [2018-10-24 16:04:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:16,159 INFO L481 AbstractCegarLoop]: Abstraction has 23282 states and 26180 transitions. [2018-10-24 16:04:16,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:04:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 23282 states and 26180 transitions. [2018-10-24 16:04:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-24 16:04:16,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:16,166 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:16,166 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:16,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 847309857, now seen corresponding path program 1 times [2018-10-24 16:04:16,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:16,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:16,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:16,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:16,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:16,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:16,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:16,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:16,612 INFO L87 Difference]: Start difference. First operand 23282 states and 26180 transitions. Second operand 4 states. [2018-10-24 16:04:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:19,491 INFO L93 Difference]: Finished difference Result 46750 states and 52559 transitions. [2018-10-24 16:04:19,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:19,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2018-10-24 16:04:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:19,527 INFO L225 Difference]: With dead ends: 46750 [2018-10-24 16:04:19,528 INFO L226 Difference]: Without dead ends: 23840 [2018-10-24 16:04:19,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23840 states. [2018-10-24 16:04:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23840 to 21793. [2018-10-24 16:04:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21793 states. [2018-10-24 16:04:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21793 states to 21793 states and 24382 transitions. [2018-10-24 16:04:20,038 INFO L78 Accepts]: Start accepts. Automaton has 21793 states and 24382 transitions. Word has length 258 [2018-10-24 16:04:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:20,039 INFO L481 AbstractCegarLoop]: Abstraction has 21793 states and 24382 transitions. [2018-10-24 16:04:20,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21793 states and 24382 transitions. [2018-10-24 16:04:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 16:04:20,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:20,051 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:20,051 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:20,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1177107993, now seen corresponding path program 1 times [2018-10-24 16:04:20,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:20,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:20,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:20,671 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 16:04:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 16:04:20,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:20,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:20,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:20,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:20,727 INFO L87 Difference]: Start difference. First operand 21793 states and 24382 transitions. Second operand 4 states. [2018-10-24 16:04:23,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:23,850 INFO L93 Difference]: Finished difference Result 43233 states and 48389 transitions. [2018-10-24 16:04:23,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:23,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2018-10-24 16:04:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:23,890 INFO L225 Difference]: With dead ends: 43233 [2018-10-24 16:04:23,890 INFO L226 Difference]: Without dead ends: 21812 [2018-10-24 16:04:23,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:23,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21812 states. [2018-10-24 16:04:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21812 to 19750. [2018-10-24 16:04:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19750 states. [2018-10-24 16:04:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19750 states to 19750 states and 21771 transitions. [2018-10-24 16:04:24,143 INFO L78 Accepts]: Start accepts. Automaton has 19750 states and 21771 transitions. Word has length 308 [2018-10-24 16:04:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:24,144 INFO L481 AbstractCegarLoop]: Abstraction has 19750 states and 21771 transitions. [2018-10-24 16:04:24,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 19750 states and 21771 transitions. [2018-10-24 16:04:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-24 16:04:24,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:24,159 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:04:24,159 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:24,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -882791487, now seen corresponding path program 1 times [2018-10-24 16:04:24,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:24,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:24,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:24,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:24,777 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:04:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 62 proven. 181 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 16:04:24,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:04:24,907 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:04:24,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:25,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:04:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 97 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:26,905 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:04:26,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-10-24 16:04:26,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 16:04:26,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 16:04:26,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:04:26,907 INFO L87 Difference]: Start difference. First operand 19750 states and 21771 transitions. Second operand 9 states. [2018-10-24 16:05:17,252 WARN L179 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-24 16:05:19,177 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-24 16:05:22,131 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-10-24 16:05:23,662 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-24 16:05:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:37,862 INFO L93 Difference]: Finished difference Result 52139 states and 57831 transitions. [2018-10-24 16:05:37,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-24 16:05:37,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2018-10-24 16:05:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:37,894 INFO L225 Difference]: With dead ends: 52139 [2018-10-24 16:05:37,895 INFO L226 Difference]: Without dead ends: 28656 [2018-10-24 16:05:37,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=146, Invalid=607, Unknown=3, NotChecked=0, Total=756 [2018-10-24 16:05:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28656 states. [2018-10-24 16:05:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28656 to 22895. [2018-10-24 16:05:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22895 states. [2018-10-24 16:05:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22895 states to 22895 states and 24814 transitions. [2018-10-24 16:05:38,211 INFO L78 Accepts]: Start accepts. Automaton has 22895 states and 24814 transitions. Word has length 335 [2018-10-24 16:05:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:38,212 INFO L481 AbstractCegarLoop]: Abstraction has 22895 states and 24814 transitions. [2018-10-24 16:05:38,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 16:05:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 22895 states and 24814 transitions. [2018-10-24 16:05:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 16:05:38,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:38,232 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:38,232 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:38,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1115860488, now seen corresponding path program 1 times [2018-10-24 16:05:38,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:38,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:38,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:39,175 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 16:05:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 152 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:39,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:39,753 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:05:39,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:39,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 161 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:40,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:40,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-10-24 16:05:40,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 16:05:40,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 16:05:40,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:05:40,541 INFO L87 Difference]: Start difference. First operand 22895 states and 24814 transitions. Second operand 12 states. [2018-10-24 16:05:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:48,682 INFO L93 Difference]: Finished difference Result 51312 states and 55475 transitions. [2018-10-24 16:05:48,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 16:05:48,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 377 [2018-10-24 16:05:48,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:48,713 INFO L225 Difference]: With dead ends: 51312 [2018-10-24 16:05:48,714 INFO L226 Difference]: Without dead ends: 27487 [2018-10-24 16:05:48,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2018-10-24 16:05:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27487 states. [2018-10-24 16:05:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27487 to 21593. [2018-10-24 16:05:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21593 states. [2018-10-24 16:05:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21593 states to 21593 states and 23359 transitions. [2018-10-24 16:05:49,068 INFO L78 Accepts]: Start accepts. Automaton has 21593 states and 23359 transitions. Word has length 377 [2018-10-24 16:05:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:49,069 INFO L481 AbstractCegarLoop]: Abstraction has 21593 states and 23359 transitions. [2018-10-24 16:05:49,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 16:05:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 21593 states and 23359 transitions. [2018-10-24 16:05:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-10-24 16:05:49,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:49,091 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:05:49,092 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:49,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:49,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1468023810, now seen corresponding path program 1 times [2018-10-24 16:05:49,092 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:49,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:49,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:49,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:49,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 112 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:50,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:50,179 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:05:50,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:50,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:52,968 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-10-24 16:05:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 153 proven. 233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:05:54,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:54,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 16:05:54,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:05:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:05:54,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2018-10-24 16:05:54,294 INFO L87 Difference]: Start difference. First operand 21593 states and 23359 transitions. Second operand 10 states. [2018-10-24 16:05:54,615 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 9 [2018-10-24 16:05:55,979 WARN L179 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 20 Received shutdown request... [2018-10-24 16:07:20,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 16:07:20,423 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:07:20,428 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:07:20,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:07:20 BoogieIcfgContainer [2018-10-24 16:07:20,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:07:20,429 INFO L168 Benchmark]: Toolchain (without parser) took 243453.34 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 732.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:20,430 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:07:20,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 990.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:20,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:20,435 INFO L168 Benchmark]: Boogie Preprocessor took 162.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:07:20,435 INFO L168 Benchmark]: RCFGBuilder took 4343.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 196.7 MB). Peak memory consumption was 196.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:20,436 INFO L168 Benchmark]: TraceAbstraction took 237673.34 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -816.4 MB). Peak memory consumption was 564.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:07:20,441 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 990.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4343.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 196.7 MB). Peak memory consumption was 196.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237673.34 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -816.4 MB). Peak memory consumption was 564.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (21593states) and FLOYD_HOARE automaton (currently 20 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (19113 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 237.6s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 218.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2366 SDtfs, 15445 SDslu, 2596 SDs, 0 SdLazy, 44386 SolverSat, 6980 SolverUnsat, 111 SolverUnknown, 0 SolverNotchecked, 192.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1728 GetRequests, 1602 SyntacticMatches, 7 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23282occurred in iteration=7, 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: 2.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 27412 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 4397 NumberOfCodeBlocks, 4397 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 4380 ConstructedInterpolants, 646 QuantifiedInterpolants, 13489014 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2173 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 1682/3328 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown