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/Problem12_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:06:37,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:06:37,008 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:06:37,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:06:37,021 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:06:37,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:06:37,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:06:37,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:06:37,027 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:06:37,028 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:06:37,029 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:06:37,029 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:06:37,030 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:06:37,031 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:06:37,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:06:37,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:06:37,034 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:06:37,036 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:06:37,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:06:37,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:06:37,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:06:37,043 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:06:37,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:06:37,045 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:06:37,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:06:37,047 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:06:37,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:06:37,049 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:06:37,050 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:06:37,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:06:37,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:06:37,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:06:37,055 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 [2018-10-23 20:06:37,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:06:37,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:06:37,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:06:37,072 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:06:37,072 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:06:37,073 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:06:37,073 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:06:37,073 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:06:37,073 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:06:37,073 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:06:37,074 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:06:37,074 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:06:37,074 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:06:37,074 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:06:37,074 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:06:37,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:06:37,075 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:06:37,075 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:06:37,075 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:06:37,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:06:37,076 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:06:37,076 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:06:37,076 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:06:37,076 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:06:37,076 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:06:37,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:06:37,077 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:06:37,077 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:06:37,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:06:37,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:06:37,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:06:37,141 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:06:37,141 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:06:37,142 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-23 20:06:37,204 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/caa71bef2/4bef6a4229d64171b67593f636e53f08/FLAG373c2edbf [2018-10-23 20:06:37,914 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:06:37,915 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-23 20:06:37,950 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/caa71bef2/4bef6a4229d64171b67593f636e53f08/FLAG373c2edbf [2018-10-23 20:06:37,966 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/caa71bef2/4bef6a4229d64171b67593f636e53f08 [2018-10-23 20:06:37,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:06:37,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:06:37,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:06:37,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:06:37,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:06:37,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:37" (1/1) ... [2018-10-23 20:06:37,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0c9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:37, skipping insertion in model container [2018-10-23 20:06:37,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:06:37" (1/1) ... [2018-10-23 20:06:38,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:06:38,155 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:06:39,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:06:39,470 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:06:40,089 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:06:40,126 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:06:40,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40 WrapperNode [2018-10-23 20:06:40,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:06:40,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:06:40,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:06:40,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:06:40,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:06:40,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:06:40,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:06:40,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:06:40,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:40,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:41,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (1/1) ... [2018-10-23 20:06:41,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:06:41,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:06:41,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:06:41,087 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:06:41,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (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 [2018-10-23 20:06:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:06:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:06:41,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:06:49,205 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:06:49,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:06:49 BoogieIcfgContainer [2018-10-23 20:06:49,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:06:49,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:06:49,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:06:49,211 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:06:49,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:06:37" (1/3) ... [2018-10-23 20:06:49,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e98f980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:06:49, skipping insertion in model container [2018-10-23 20:06:49,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:06:40" (2/3) ... [2018-10-23 20:06:49,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e98f980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:06:49, skipping insertion in model container [2018-10-23 20:06:49,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:06:49" (3/3) ... [2018-10-23 20:06:49,215 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04_true-unreach-call.c [2018-10-23 20:06:49,226 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:06:49,237 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:06:49,256 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:06:49,302 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:06:49,303 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:06:49,303 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:06:49,303 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:06:49,303 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:06:49,303 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:06:49,303 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:06:49,304 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:06:49,304 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:06:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:06:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-23 20:06:49,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:06:49,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:06:49,357 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:06:49,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:06:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1059493314, now seen corresponding path program 1 times [2018-10-23 20:06:49,365 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:06:49,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:06:49,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:06:49,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:06:49,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:06:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:06:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:06:49,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:06:49,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:06:49,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:06:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:06:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:06:49,921 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 20:07:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:03,239 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-23 20:07:03,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:07:03,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-10-23 20:07:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:03,283 INFO L225 Difference]: With dead ends: 3162 [2018-10-23 20:07:03,284 INFO L226 Difference]: Without dead ends: 2336 [2018-10-23 20:07:03,298 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 [2018-10-23 20:07:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-23 20:07:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-23 20:07:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-23 20:07:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-23 20:07:03,463 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 61 [2018-10-23 20:07:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:03,464 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-23 20:07:03,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:07:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-23 20:07:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 20:07:03,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:03,474 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:07:03,474 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:03,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash 165959356, now seen corresponding path program 1 times [2018-10-23 20:07:03,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:03,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:03,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:03,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:03,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:03,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:03,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:07:03,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:07:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:07:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:07:03,798 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-23 20:07:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:19,420 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-23 20:07:19,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:07:19,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-10-23 20:07:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:19,446 INFO L225 Difference]: With dead ends: 6142 [2018-10-23 20:07:19,446 INFO L226 Difference]: Without dead ends: 4576 [2018-10-23 20:07:19,450 INFO L605 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 [2018-10-23 20:07:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-23 20:07:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-23 20:07:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-23 20:07:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-23 20:07:19,530 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 137 [2018-10-23 20:07:19,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:19,531 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-23 20:07:19,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:07:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-23 20:07:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 20:07:19,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:19,535 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:07:19,535 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:19,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:19,536 INFO L82 PathProgramCache]: Analyzing trace with hash -947691967, now seen corresponding path program 1 times [2018-10-23 20:07:19,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:19,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:19,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:19,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:19,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:20,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:20,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:07:20,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:07:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:07:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:07:20,121 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-23 20:07:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:33,355 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-23 20:07:33,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:07:33,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-23 20:07:33,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:33,409 INFO L225 Difference]: With dead ends: 15166 [2018-10-23 20:07:33,409 INFO L226 Difference]: Without dead ends: 10592 [2018-10-23 20:07:33,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:07:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-23 20:07:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-23 20:07:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-23 20:07:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-23 20:07:33,626 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 139 [2018-10-23 20:07:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:33,626 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-23 20:07:33,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:07:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-23 20:07:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-23 20:07:33,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:33,631 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:07:33,631 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:33,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:33,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1986074575, now seen corresponding path program 1 times [2018-10-23 20:07:33,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:33,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:33,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:33,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:33,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-23 20:07:34,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:07:34,237 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 [2018-10-23 20:07:34,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:34,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:07:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:34,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:07:34,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:07:34,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:07:34,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:07:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:07:34,564 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-23 20:07:36,274 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 20:07:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:54,916 INFO L93 Difference]: Finished difference Result 41518 states and 54744 transitions. [2018-10-23 20:07:54,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 20:07:54,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-10-23 20:07:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:54,997 INFO L225 Difference]: With dead ends: 41518 [2018-10-23 20:07:54,997 INFO L226 Difference]: Without dead ends: 29421 [2018-10-23 20:07:55,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:07:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2018-10-23 20:07:55,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 20367. [2018-10-23 20:07:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20367 states. [2018-10-23 20:07:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20367 states to 20367 states and 25010 transitions. [2018-10-23 20:07:55,426 INFO L78 Accepts]: Start accepts. Automaton has 20367 states and 25010 transitions. Word has length 211 [2018-10-23 20:07:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:55,426 INFO L481 AbstractCegarLoop]: Abstraction has 20367 states and 25010 transitions. [2018-10-23 20:07:55,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:07:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 20367 states and 25010 transitions. [2018-10-23 20:07:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-23 20:07:55,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:55,435 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:07:55,435 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:55,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:55,435 INFO L82 PathProgramCache]: Analyzing trace with hash 61082558, now seen corresponding path program 1 times [2018-10-23 20:07:55,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:55,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:55,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:55,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:55,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:07:55,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:55,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:07:55,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:07:55,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:07:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:07:55,876 INFO L87 Difference]: Start difference. First operand 20367 states and 25010 transitions. Second operand 3 states. [2018-10-23 20:08:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:02,174 INFO L93 Difference]: Finished difference Result 47500 states and 58798 transitions. [2018-10-23 20:08:02,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:08:02,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-10-23 20:08:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:02,223 INFO L225 Difference]: With dead ends: 47500 [2018-10-23 20:08:02,223 INFO L226 Difference]: Without dead ends: 27887 [2018-10-23 20:08:02,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2018-10-23 20:08:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 27887. [2018-10-23 20:08:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27887 states. [2018-10-23 20:08:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27887 states to 27887 states and 33811 transitions. [2018-10-23 20:08:02,696 INFO L78 Accepts]: Start accepts. Automaton has 27887 states and 33811 transitions. Word has length 293 [2018-10-23 20:08:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:02,697 INFO L481 AbstractCegarLoop]: Abstraction has 27887 states and 33811 transitions. [2018-10-23 20:08:02,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:08:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 27887 states and 33811 transitions. [2018-10-23 20:08:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-23 20:08:02,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:02,708 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:08:02,709 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:02,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1506042153, now seen corresponding path program 1 times [2018-10-23 20:08:02,710 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:02,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:02,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:08:03,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:03,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:08:03,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:08:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:08:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:03,075 INFO L87 Difference]: Start difference. First operand 27887 states and 33811 transitions. Second operand 3 states. [2018-10-23 20:08:10,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:10,134 INFO L93 Difference]: Finished difference Result 55020 states and 66863 transitions. [2018-10-23 20:08:10,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:08:10,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-10-23 20:08:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:10,162 INFO L225 Difference]: With dead ends: 55020 [2018-10-23 20:08:10,162 INFO L226 Difference]: Without dead ends: 27887 [2018-10-23 20:08:10,185 INFO L605 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 [2018-10-23 20:08:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2018-10-23 20:08:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 26383. [2018-10-23 20:08:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26383 states. [2018-10-23 20:08:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26383 states to 26383 states and 30906 transitions. [2018-10-23 20:08:10,511 INFO L78 Accepts]: Start accepts. Automaton has 26383 states and 30906 transitions. Word has length 363 [2018-10-23 20:08:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:10,512 INFO L481 AbstractCegarLoop]: Abstraction has 26383 states and 30906 transitions. [2018-10-23 20:08:10,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:08:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 26383 states and 30906 transitions. [2018-10-23 20:08:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-10-23 20:08:10,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:10,526 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:08:10,527 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:10,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1983113583, now seen corresponding path program 1 times [2018-10-23 20:08:10,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:10,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:10,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:10,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:10,935 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:08:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:08:11,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:11,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:11,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:11,112 INFO L87 Difference]: Start difference. First operand 26383 states and 30906 transitions. Second operand 4 states. [2018-10-23 20:08:20,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:20,202 INFO L93 Difference]: Finished difference Result 88860 states and 104381 transitions. [2018-10-23 20:08:20,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:20,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2018-10-23 20:08:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:20,277 INFO L225 Difference]: With dead ends: 88860 [2018-10-23 20:08:20,277 INFO L226 Difference]: Without dead ends: 60211 [2018-10-23 20:08:20,301 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 [2018-10-23 20:08:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60211 states. [2018-10-23 20:08:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60211 to 54947. [2018-10-23 20:08:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54947 states. [2018-10-23 20:08:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54947 states to 54947 states and 62112 transitions. [2018-10-23 20:08:21,401 INFO L78 Accepts]: Start accepts. Automaton has 54947 states and 62112 transitions. Word has length 391 [2018-10-23 20:08:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:21,402 INFO L481 AbstractCegarLoop]: Abstraction has 54947 states and 62112 transitions. [2018-10-23 20:08:21,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 54947 states and 62112 transitions. [2018-10-23 20:08:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-23 20:08:21,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:21,417 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:21,418 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:21,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash -770153544, now seen corresponding path program 1 times [2018-10-23 20:08:21,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:21,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:21,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:21,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:21,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:08:21,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:21,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:08:21,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:08:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:08:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:21,872 INFO L87 Difference]: Start difference. First operand 54947 states and 62112 transitions. Second operand 3 states. [2018-10-23 20:08:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:27,102 INFO L93 Difference]: Finished difference Result 134708 states and 153760 transitions. [2018-10-23 20:08:27,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:08:27,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 402 [2018-10-23 20:08:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:27,189 INFO L225 Difference]: With dead ends: 134708 [2018-10-23 20:08:27,189 INFO L226 Difference]: Without dead ends: 80515 [2018-10-23 20:08:27,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-23 20:08:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 80515. [2018-10-23 20:08:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80515 states. [2018-10-23 20:08:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80515 states to 80515 states and 91416 transitions. [2018-10-23 20:08:27,919 INFO L78 Accepts]: Start accepts. Automaton has 80515 states and 91416 transitions. Word has length 402 [2018-10-23 20:08:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:27,919 INFO L481 AbstractCegarLoop]: Abstraction has 80515 states and 91416 transitions. [2018-10-23 20:08:27,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:08:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 80515 states and 91416 transitions. [2018-10-23 20:08:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-23 20:08:27,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:27,935 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:08:27,936 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:27,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:27,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1633068981, now seen corresponding path program 1 times [2018-10-23 20:08:27,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:27,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:27,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:27,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:27,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 20:08:28,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:28,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:28,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:28,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:28,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:28,955 INFO L87 Difference]: Start difference. First operand 80515 states and 91416 transitions. Second operand 4 states. [2018-10-23 20:08:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:34,985 INFO L93 Difference]: Finished difference Result 160276 states and 182073 transitions. [2018-10-23 20:08:34,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:34,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 419 [2018-10-23 20:08:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:35,076 INFO L225 Difference]: With dead ends: 160276 [2018-10-23 20:08:35,076 INFO L226 Difference]: Without dead ends: 80515 [2018-10-23 20:08:35,121 INFO L605 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 [2018-10-23 20:08:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-23 20:08:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 80515. [2018-10-23 20:08:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80515 states. [2018-10-23 20:08:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80515 states to 80515 states and 87838 transitions. [2018-10-23 20:08:35,748 INFO L78 Accepts]: Start accepts. Automaton has 80515 states and 87838 transitions. Word has length 419 [2018-10-23 20:08:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:35,749 INFO L481 AbstractCegarLoop]: Abstraction has 80515 states and 87838 transitions. [2018-10-23 20:08:35,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 80515 states and 87838 transitions. [2018-10-23 20:08:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-10-23 20:08:35,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:35,762 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 20:08:35,763 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:35,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash 702803135, now seen corresponding path program 1 times [2018-10-23 20:08:35,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:35,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:35,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:35,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:35,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-10-23 20:08:36,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:36,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:36,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:36,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:36,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:36,044 INFO L87 Difference]: Start difference. First operand 80515 states and 87838 transitions. Second operand 4 states. [2018-10-23 20:08:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:45,879 INFO L93 Difference]: Finished difference Result 206900 states and 224887 transitions. [2018-10-23 20:08:45,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:45,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 423 [2018-10-23 20:08:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:46,018 INFO L225 Difference]: With dead ends: 206900 [2018-10-23 20:08:46,018 INFO L226 Difference]: Without dead ends: 127139 [2018-10-23 20:08:46,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127139 states. [2018-10-23 20:08:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127139 to 112099. [2018-10-23 20:08:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112099 states. [2018-10-23 20:08:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112099 states to 112099 states and 120551 transitions. [2018-10-23 20:08:47,088 INFO L78 Accepts]: Start accepts. Automaton has 112099 states and 120551 transitions. Word has length 423 [2018-10-23 20:08:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:47,089 INFO L481 AbstractCegarLoop]: Abstraction has 112099 states and 120551 transitions. [2018-10-23 20:08:47,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 112099 states and 120551 transitions. [2018-10-23 20:08:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-23 20:08:47,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:47,105 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:47,105 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:47,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:47,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1094920460, now seen corresponding path program 1 times [2018-10-23 20:08:47,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:47,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:47,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:47,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:47,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 626 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-10-23 20:08:48,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:48,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:08:48,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:08:48,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:08:48,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:48,102 INFO L87 Difference]: Start difference. First operand 112099 states and 120551 transitions. Second operand 3 states. [2018-10-23 20:08:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:55,333 INFO L93 Difference]: Finished difference Result 236980 states and 254955 transitions. [2018-10-23 20:08:55,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:08:55,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-23 20:08:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:55,484 INFO L225 Difference]: With dead ends: 236980 [2018-10-23 20:08:55,484 INFO L226 Difference]: Without dead ends: 125635 [2018-10-23 20:08:55,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:08:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125635 states. [2018-10-23 20:08:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125635 to 121875. [2018-10-23 20:08:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121875 states. [2018-10-23 20:08:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121875 states to 121875 states and 129571 transitions. [2018-10-23 20:08:56,570 INFO L78 Accepts]: Start accepts. Automaton has 121875 states and 129571 transitions. Word has length 506 [2018-10-23 20:08:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:56,570 INFO L481 AbstractCegarLoop]: Abstraction has 121875 states and 129571 transitions. [2018-10-23 20:08:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:08:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 121875 states and 129571 transitions. [2018-10-23 20:08:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-23 20:08:56,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:56,580 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:56,581 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:56,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:56,581 INFO L82 PathProgramCache]: Analyzing trace with hash -14304776, now seen corresponding path program 1 times [2018-10-23 20:08:56,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:56,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:56,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:56,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:56,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:57,565 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2018-10-23 20:08:57,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:57,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:57,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:57,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:57,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:57,566 INFO L87 Difference]: Start difference. First operand 121875 states and 129571 transitions. Second operand 4 states. [2018-10-23 20:09:05,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:05,480 INFO L93 Difference]: Finished difference Result 252772 states and 268843 transitions. [2018-10-23 20:09:05,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:05,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-10-23 20:09:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:05,630 INFO L225 Difference]: With dead ends: 252772 [2018-10-23 20:09:05,630 INFO L226 Difference]: Without dead ends: 131651 [2018-10-23 20:09:05,699 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 [2018-10-23 20:09:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131651 states. [2018-10-23 20:09:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131651 to 130899. [2018-10-23 20:09:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130899 states. [2018-10-23 20:09:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130899 states to 130899 states and 137390 transitions. [2018-10-23 20:09:07,706 INFO L78 Accepts]: Start accepts. Automaton has 130899 states and 137390 transitions. Word has length 506 [2018-10-23 20:09:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:07,707 INFO L481 AbstractCegarLoop]: Abstraction has 130899 states and 137390 transitions. [2018-10-23 20:09:07,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 130899 states and 137390 transitions. [2018-10-23 20:09:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-10-23 20:09:07,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:07,718 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-23 20:09:07,718 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:07,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:07,719 INFO L82 PathProgramCache]: Analyzing trace with hash -5835663, now seen corresponding path program 1 times [2018-10-23 20:09:07,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:07,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:07,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:07,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:07,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:08,562 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-10-23 20:09:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 242 proven. 461 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-23 20:09:08,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:08,913 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 [2018-10-23 20:09:08,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:09,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2018-10-23 20:09:09,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:09:09,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-23 20:09:09,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 20:09:09,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 20:09:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:09:09,254 INFO L87 Difference]: Start difference. First operand 130899 states and 137390 transitions. Second operand 11 states. [2018-10-23 20:09:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:46,286 INFO L93 Difference]: Finished difference Result 281344 states and 295360 transitions. [2018-10-23 20:09:46,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 20:09:46,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 560 [2018-10-23 20:09:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:46,440 INFO L225 Difference]: With dead ends: 281344 [2018-10-23 20:09:46,440 INFO L226 Difference]: Without dead ends: 145927 [2018-10-23 20:09:46,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 567 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-10-23 20:09:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145927 states. [2018-10-23 20:09:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145927 to 117347. [2018-10-23 20:09:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117347 states. [2018-10-23 20:09:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117347 states to 117347 states and 121482 transitions. [2018-10-23 20:09:48,242 INFO L78 Accepts]: Start accepts. Automaton has 117347 states and 121482 transitions. Word has length 560 [2018-10-23 20:09:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:48,242 INFO L481 AbstractCegarLoop]: Abstraction has 117347 states and 121482 transitions. [2018-10-23 20:09:48,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 20:09:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 117347 states and 121482 transitions. [2018-10-23 20:09:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-23 20:09:48,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:48,274 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:48,274 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:48,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash -752154942, now seen corresponding path program 1 times [2018-10-23 20:09:48,275 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:48,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:48,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:48,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:48,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:48,966 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-23 20:09:49,439 WARN L179 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2018-10-23 20:09:50,030 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-10-23 20:09:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 879 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-23 20:09:51,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:51,402 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 [2018-10-23 20:09:51,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:51,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 886 proven. 110 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-23 20:09:55,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:09:55,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-10-23 20:09:55,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 20:09:55,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 20:09:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:09:55,395 INFO L87 Difference]: Start difference. First operand 117347 states and 121482 transitions. Second operand 10 states. [2018-10-23 20:10:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:07,943 INFO L93 Difference]: Finished difference Result 251600 states and 260365 transitions. [2018-10-23 20:10:07,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 20:10:07,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 775 [2018-10-23 20:10:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:08,129 INFO L225 Difference]: With dead ends: 251600 [2018-10-23 20:10:08,129 INFO L226 Difference]: Without dead ends: 135007 [2018-10-23 20:10:08,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 772 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2018-10-23 20:10:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135007 states. [2018-10-23 20:10:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135007 to 117347. [2018-10-23 20:10:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117347 states. [2018-10-23 20:10:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117347 states to 117347 states and 121011 transitions. [2018-10-23 20:10:09,357 INFO L78 Accepts]: Start accepts. Automaton has 117347 states and 121011 transitions. Word has length 775 [2018-10-23 20:10:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:09,358 INFO L481 AbstractCegarLoop]: Abstraction has 117347 states and 121011 transitions. [2018-10-23 20:10:09,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 20:10:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 117347 states and 121011 transitions. [2018-10-23 20:10:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2018-10-23 20:10:09,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:09,379 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:09,379 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:09,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 347022633, now seen corresponding path program 1 times [2018-10-23 20:10:09,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:09,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:09,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:09,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:09,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:10:10,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:10,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:10,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:10,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:10,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:10,645 INFO L87 Difference]: Start difference. First operand 117347 states and 121011 transitions. Second operand 4 states. [2018-10-23 20:10:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:20,852 INFO L93 Difference]: Finished difference Result 243716 states and 251268 transitions. [2018-10-23 20:10:20,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:20,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 793 [2018-10-23 20:10:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:20,978 INFO L225 Difference]: With dead ends: 243716 [2018-10-23 20:10:20,978 INFO L226 Difference]: Without dead ends: 125618 [2018-10-23 20:10:21,040 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 [2018-10-23 20:10:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125618 states. [2018-10-23 20:10:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125618 to 117346. [2018-10-23 20:10:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117346 states. [2018-10-23 20:10:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117346 states to 117346 states and 120923 transitions. [2018-10-23 20:10:22,499 INFO L78 Accepts]: Start accepts. Automaton has 117346 states and 120923 transitions. Word has length 793 [2018-10-23 20:10:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:22,500 INFO L481 AbstractCegarLoop]: Abstraction has 117346 states and 120923 transitions. [2018-10-23 20:10:22,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 117346 states and 120923 transitions. [2018-10-23 20:10:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2018-10-23 20:10:22,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:22,531 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2018-10-23 20:10:22,532 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:22,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash -550988171, now seen corresponding path program 1 times [2018-10-23 20:10:22,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:22,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:22,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:22,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:22,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 377 proven. 869 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-23 20:10:24,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:10:24,984 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 [2018-10-23 20:10:24,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:25,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:10:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 788 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2018-10-23 20:10:26,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:10:26,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-23 20:10:26,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 20:10:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 20:10:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:10:26,572 INFO L87 Difference]: Start difference. First operand 117346 states and 120923 transitions. Second operand 12 states. Received shutdown request... [2018-10-23 20:10:28,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:10:28,473 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:10:28,480 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:10:28,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:10:28 BoogieIcfgContainer [2018-10-23 20:10:28,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:10:28,481 INFO L168 Benchmark]: Toolchain (without parser) took 230502.31 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,482 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 20:10:28,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2146.88 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 632.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -997.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,485 INFO L168 Benchmark]: Boogie Preprocessor took 324.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,486 INFO L168 Benchmark]: RCFGBuilder took 8119.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 226.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -179.3 MB). Peak memory consumption was 627.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,486 INFO L168 Benchmark]: TraceAbstraction took 219273.11 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -800.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:28,492 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2146.88 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 632.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -997.2 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 324.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8119.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 226.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -179.3 MB). Peak memory consumption was 627.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219273.11 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -800.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (117346states) and FLOYD_HOARE automaton (currently 8 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (1115 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.1s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 184.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8708 SDtfs, 44088 SDslu, 1930 SDs, 0 SdLazy, 97790 SolverSat, 13991 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 149.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2495 GetRequests, 2395 SyntacticMatches, 24 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130899occurred in iteration=12, 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: 12.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 90654 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 9167 NumberOfCodeBlocks, 9167 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9147 ConstructedInterpolants, 0 QuantifiedInterpolants, 21868600 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2923 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 10477/11930 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown