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_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:07:06,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:07:06,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:07:06,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:07:06,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:07:06,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:07:06,907 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:07:06,909 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:07:06,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:07:06,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:07:06,913 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:07:06,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:07:06,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:07:06,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:07:06,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:07:06,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:07:06,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:07:06,921 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:07:06,923 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:07:06,925 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:07:06,926 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:07:06,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:07:06,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:07:06,941 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 20:07:06,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:07:06,957 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:07:06,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:07:06,958 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:07:06,959 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:07:06,959 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:07:06,959 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:07:06,960 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:07:06,960 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:07:06,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:07:06,961 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:07:06,961 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:07:06,961 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:07:06,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:07:06,962 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:07:06,962 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:07:06,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:07:06,963 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:07:06,963 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:07:06,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:07:06,963 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:07:06,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:07:06,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:07:06,964 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:07:06,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:07:06,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:07:06,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:07:06,965 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:07:07,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:07:07,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:07:07,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:07:07,028 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:07:07,029 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:07:07,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-10-23 20:07:07,090 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ea79419e/6003704620fa473c998aa6c9c2d6e997/FLAGed3728166 [2018-10-23 20:07:07,932 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:07:07,933 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label14_true-unreach-call.c [2018-10-23 20:07:07,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ea79419e/6003704620fa473c998aa6c9c2d6e997/FLAGed3728166 [2018-10-23 20:07:07,978 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ea79419e/6003704620fa473c998aa6c9c2d6e997 [2018-10-23 20:07:07,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:07:07,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:07:07,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:07:07,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:07:07,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:07:07,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:07:07" (1/1) ... [2018-10-23 20:07:08,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f35142c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:08, skipping insertion in model container [2018-10-23 20:07:08,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:07:07" (1/1) ... [2018-10-23 20:07:08,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:07:08,156 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:07:09,407 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:07:09,413 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:07:09,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:07:10,021 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:07:10,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10 WrapperNode [2018-10-23 20:07:10,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:07:10,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:07:10,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:07:10,023 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:07:10,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:07:10,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:07:10,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:07:10,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:07:10,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (1/1) ... [2018-10-23 20:07:10,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:07:10,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:07:10,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:07:10,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:07:10,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (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 20:07:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:07:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:07:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:07:19,448 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:07:19,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:07:19 BoogieIcfgContainer [2018-10-23 20:07:19,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:07:19,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:07:19,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:07:19,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:07:19,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:07:07" (1/3) ... [2018-10-23 20:07:19,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39113b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:07:19, skipping insertion in model container [2018-10-23 20:07:19,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:07:10" (2/3) ... [2018-10-23 20:07:19,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39113b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:07:19, skipping insertion in model container [2018-10-23 20:07:19,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:07:19" (3/3) ... [2018-10-23 20:07:19,461 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14_true-unreach-call.c [2018-10-23 20:07:19,471 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:07:19,487 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:07:19,504 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:07:19,556 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:07:19,556 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:07:19,557 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:07:19,557 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:07:19,557 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:07:19,557 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:07:19,557 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:07:19,557 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:07:19,558 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:07:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:07:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-23 20:07:19,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:19,613 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] [2018-10-23 20:07:19,616 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:19,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash 55000978, now seen corresponding path program 1 times [2018-10-23 20:07:19,624 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:19,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:19,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:19,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:19,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:20,120 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 20:07:20,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:20,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:07:20,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:07:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:07:20,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:07:20,150 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 20:07:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:32,568 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-23 20:07:32,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:07:32,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-23 20:07:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:32,617 INFO L225 Difference]: With dead ends: 3146 [2018-10-23 20:07:32,618 INFO L226 Difference]: Without dead ends: 2320 [2018-10-23 20:07:32,626 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 20:07:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-23 20:07:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-23 20:07:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-23 20:07:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-10-23 20:07:32,776 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 49 [2018-10-23 20:07:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:32,776 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-10-23 20:07:32,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:07:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-10-23 20:07:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 20:07:32,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:32,785 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, 1, 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 20:07:32,786 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:32,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:32,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1659787571, now seen corresponding path program 1 times [2018-10-23 20:07:32,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:32,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:32,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:32,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:32,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:33,214 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 20:07:33,476 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-10-23 20:07:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:33,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:07:33,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:07:33,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:07:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:07:33,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:07:33,827 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-10-23 20:07:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:07:52,624 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-10-23 20:07:52,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:07:52,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2018-10-23 20:07:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:07:52,670 INFO L225 Difference]: With dead ends: 9904 [2018-10-23 20:07:52,670 INFO L226 Difference]: Without dead ends: 7586 [2018-10-23 20:07:52,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:07:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-10-23 20:07:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-10-23 20:07:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-10-23 20:07:52,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-10-23 20:07:52,811 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 115 [2018-10-23 20:07:52,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:07:52,812 INFO L481 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-10-23 20:07:52,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:07:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-10-23 20:07:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-23 20:07:52,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:07:52,822 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, 2, 2, 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 20:07:52,822 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:07:52,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:07:52,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1677829945, now seen corresponding path program 1 times [2018-10-23 20:07:52,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:07:52,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:07:52,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:52,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:52,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:07:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:53,388 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 20:07:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 147 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-23 20:07:53,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:07:53,568 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 20:07:53,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:07:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:07:53,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:07:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:07:53,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:07:53,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:07:53,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:07:53,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:07:53,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:07:53,805 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 7 states. [2018-10-23 20:07:54,596 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 20:08:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:16,173 INFO L93 Difference]: Finished difference Result 35502 states and 56959 transitions. [2018-10-23 20:08:16,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 20:08:16,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-10-23 20:08:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:16,270 INFO L225 Difference]: With dead ends: 35502 [2018-10-23 20:08:16,270 INFO L226 Difference]: Without dead ends: 27165 [2018-10-23 20:08:16,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:08:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27165 states. [2018-10-23 20:08:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27165 to 15103. [2018-10-23 20:08:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15103 states. [2018-10-23 20:08:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15103 states to 15103 states and 19695 transitions. [2018-10-23 20:08:16,631 INFO L78 Accepts]: Start accepts. Automaton has 15103 states and 19695 transitions. Word has length 212 [2018-10-23 20:08:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:16,632 INFO L481 AbstractCegarLoop]: Abstraction has 15103 states and 19695 transitions. [2018-10-23 20:08:16,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:08:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15103 states and 19695 transitions. [2018-10-23 20:08:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-23 20:08:16,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:16,641 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:08:16,642 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:16,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:16,642 INFO L82 PathProgramCache]: Analyzing trace with hash -438245368, now seen corresponding path program 1 times [2018-10-23 20:08:16,642 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:16,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:16,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:16,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:16,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 93 proven. 69 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-23 20:08:17,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:08:17,229 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) [2018-10-23 20:08:17,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:08:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:17,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:08:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-23 20:08:17,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:08:17,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:08:17,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:08:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:08:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:08:17,565 INFO L87 Difference]: Start difference. First operand 15103 states and 19695 transitions. Second operand 5 states. [2018-10-23 20:08:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:27,865 INFO L93 Difference]: Finished difference Result 65548 states and 86608 transitions. [2018-10-23 20:08:27,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:08:27,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2018-10-23 20:08:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:27,988 INFO L225 Difference]: With dead ends: 65548 [2018-10-23 20:08:27,989 INFO L226 Difference]: Without dead ends: 50447 [2018-10-23 20:08:28,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:08:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50447 states. [2018-10-23 20:08:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50447 to 50447. [2018-10-23 20:08:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50447 states. [2018-10-23 20:08:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50447 states to 50447 states and 59452 transitions. [2018-10-23 20:08:28,752 INFO L78 Accepts]: Start accepts. Automaton has 50447 states and 59452 transitions. Word has length 314 [2018-10-23 20:08:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:28,753 INFO L481 AbstractCegarLoop]: Abstraction has 50447 states and 59452 transitions. [2018-10-23 20:08:28,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:08:28,754 INFO L276 IsEmpty]: Start isEmpty. Operand 50447 states and 59452 transitions. [2018-10-23 20:08:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-23 20:08:28,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:28,773 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, 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, 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] [2018-10-23 20:08:28,773 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:28,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:28,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1221066105, now seen corresponding path program 1 times [2018-10-23 20:08:28,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:28,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:28,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:28,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:28,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 502 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 20:08:29,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:08:29,664 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 20:08:29,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:29,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:08:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 492 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-23 20:08:30,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:08:30,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:08:30,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:08:30,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:08:30,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:08:30,005 INFO L87 Difference]: Start difference. First operand 50447 states and 59452 transitions. Second operand 5 states. [2018-10-23 20:08:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:44,547 INFO L93 Difference]: Finished difference Result 131724 states and 156945 transitions. [2018-10-23 20:08:44,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:08:44,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2018-10-23 20:08:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:44,687 INFO L225 Difference]: With dead ends: 131724 [2018-10-23 20:08:44,688 INFO L226 Difference]: Without dead ends: 81279 [2018-10-23 20:08:44,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:08:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81279 states. [2018-10-23 20:08:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81279 to 81279. [2018-10-23 20:08:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81279 states. [2018-10-23 20:08:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81279 states to 81279 states and 91895 transitions. [2018-10-23 20:08:45,611 INFO L78 Accepts]: Start accepts. Automaton has 81279 states and 91895 transitions. Word has length 424 [2018-10-23 20:08:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:45,611 INFO L481 AbstractCegarLoop]: Abstraction has 81279 states and 91895 transitions. [2018-10-23 20:08:45,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:08:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 81279 states and 91895 transitions. [2018-10-23 20:08:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-10-23 20:08:45,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:45,635 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 20:08:45,635 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:45,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:45,636 INFO L82 PathProgramCache]: Analyzing trace with hash 249725563, now seen corresponding path program 1 times [2018-10-23 20:08:45,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:45,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:45,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:45,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:45,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 20:08:46,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:46,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:46,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:46,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:46,259 INFO L87 Difference]: Start difference. First operand 81279 states and 91895 transitions. Second operand 4 states. [2018-10-23 20:08:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:08:55,430 INFO L93 Difference]: Finished difference Result 194892 states and 219230 transitions. [2018-10-23 20:08:55,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:08:55,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 436 [2018-10-23 20:08:55,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:08:55,582 INFO L225 Difference]: With dead ends: 194892 [2018-10-23 20:08:55,582 INFO L226 Difference]: Without dead ends: 111357 [2018-10-23 20:08:55,634 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 20:08:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111357 states. [2018-10-23 20:08:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111357 to 111357. [2018-10-23 20:08:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111357 states. [2018-10-23 20:08:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111357 states to 111357 states and 120688 transitions. [2018-10-23 20:08:56,618 INFO L78 Accepts]: Start accepts. Automaton has 111357 states and 120688 transitions. Word has length 436 [2018-10-23 20:08:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:08:56,618 INFO L481 AbstractCegarLoop]: Abstraction has 111357 states and 120688 transitions. [2018-10-23 20:08:56,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:08:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 111357 states and 120688 transitions. [2018-10-23 20:08:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-23 20:08:56,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:08:56,641 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:08:56,641 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:08:56,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:08:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1982035469, now seen corresponding path program 1 times [2018-10-23 20:08:56,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:08:56,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:08:56,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:56,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:08:56,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:08:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:08:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-23 20:08:57,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:08:57,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:08:57,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:08:57,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:08:57,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:08:57,116 INFO L87 Difference]: Start difference. First operand 111357 states and 120688 transitions. Second operand 4 states. [2018-10-23 20:09:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:05,598 INFO L93 Difference]: Finished difference Result 237000 states and 257014 transitions. [2018-10-23 20:09:05,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:09:05,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 452 [2018-10-23 20:09:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:05,763 INFO L225 Difference]: With dead ends: 237000 [2018-10-23 20:09:05,763 INFO L226 Difference]: Without dead ends: 126397 [2018-10-23 20:09:05,831 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 20:09:05,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126397 states. [2018-10-23 20:09:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126397 to 124893. [2018-10-23 20:09:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124893 states. [2018-10-23 20:09:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124893 states to 124893 states and 133760 transitions. [2018-10-23 20:09:06,942 INFO L78 Accepts]: Start accepts. Automaton has 124893 states and 133760 transitions. Word has length 452 [2018-10-23 20:09:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:06,943 INFO L481 AbstractCegarLoop]: Abstraction has 124893 states and 133760 transitions. [2018-10-23 20:09:06,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:09:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 124893 states and 133760 transitions. [2018-10-23 20:09:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-23 20:09:06,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:06,957 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:09:06,957 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:06,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash 787801582, now seen corresponding path program 1 times [2018-10-23 20:09:06,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:06,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:06,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:06,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:06,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:09:07,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:07,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 20:09:07,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:09:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:09:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:09:07,517 INFO L87 Difference]: Start difference. First operand 124893 states and 133760 transitions. Second operand 6 states. [2018-10-23 20:09:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:19,867 INFO L93 Difference]: Finished difference Result 280140 states and 298227 transitions. [2018-10-23 20:09:19,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:09:19,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 482 [2018-10-23 20:09:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:20,017 INFO L225 Difference]: With dead ends: 280140 [2018-10-23 20:09:20,017 INFO L226 Difference]: Without dead ends: 156001 [2018-10-23 20:09:20,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:09:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156001 states. [2018-10-23 20:09:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156001 to 122637. [2018-10-23 20:09:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122637 states. [2018-10-23 20:09:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122637 states to 122637 states and 129651 transitions. [2018-10-23 20:09:21,407 INFO L78 Accepts]: Start accepts. Automaton has 122637 states and 129651 transitions. Word has length 482 [2018-10-23 20:09:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:21,408 INFO L481 AbstractCegarLoop]: Abstraction has 122637 states and 129651 transitions. [2018-10-23 20:09:21,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:09:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 122637 states and 129651 transitions. [2018-10-23 20:09:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-23 20:09:21,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:21,421 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 20:09:21,421 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:21,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:21,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1132872035, now seen corresponding path program 1 times [2018-10-23 20:09:21,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:21,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:21,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:21,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:21,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-10-23 20:09:22,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:09:22,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:09:22,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:09:22,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:09:22,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:09:22,710 INFO L87 Difference]: Start difference. First operand 122637 states and 129651 transitions. Second operand 5 states. [2018-10-23 20:09:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:09:33,824 INFO L93 Difference]: Finished difference Result 351334 states and 371981 transitions. [2018-10-23 20:09:33,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:09:33,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2018-10-23 20:09:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:09:34,113 INFO L225 Difference]: With dead ends: 351334 [2018-10-23 20:09:34,113 INFO L226 Difference]: Without dead ends: 229451 [2018-10-23 20:09:34,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:09:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229451 states. [2018-10-23 20:09:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229451 to 187339. [2018-10-23 20:09:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187339 states. [2018-10-23 20:09:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187339 states to 187339 states and 196160 transitions. [2018-10-23 20:09:36,844 INFO L78 Accepts]: Start accepts. Automaton has 187339 states and 196160 transitions. Word has length 493 [2018-10-23 20:09:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:09:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 187339 states and 196160 transitions. [2018-10-23 20:09:36,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:09:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 187339 states and 196160 transitions. [2018-10-23 20:09:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2018-10-23 20:09:36,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:09:36,972 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, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:36,972 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:09:36,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:09:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -932520150, now seen corresponding path program 1 times [2018-10-23 20:09:36,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:09:36,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:09:36,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:36,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:36,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:09:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:38,149 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-23 20:09:38,424 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-23 20:09:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 262 proven. 343 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-23 20:09:40,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:09:40,617 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 20:09:40,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:09:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:09:40,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:09:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 229 proven. 376 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-10-23 20:09:43,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:09:43,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-23 20:09:43,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:09:43,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:09:43,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:09:43,800 INFO L87 Difference]: Start difference. First operand 187339 states and 196160 transitions. Second operand 8 states. [2018-10-23 20:10:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:02,294 INFO L93 Difference]: Finished difference Result 421299 states and 441271 transitions. [2018-10-23 20:10:02,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:10:02,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1064 [2018-10-23 20:10:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:02,544 INFO L225 Difference]: With dead ends: 421299 [2018-10-23 20:10:02,544 INFO L226 Difference]: Without dead ends: 231704 [2018-10-23 20:10:02,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1063 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:10:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231704 states. [2018-10-23 20:10:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231704 to 215160. [2018-10-23 20:10:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215160 states. [2018-10-23 20:10:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215160 states to 215160 states and 224786 transitions. [2018-10-23 20:10:05,589 INFO L78 Accepts]: Start accepts. Automaton has 215160 states and 224786 transitions. Word has length 1064 [2018-10-23 20:10:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:05,590 INFO L481 AbstractCegarLoop]: Abstraction has 215160 states and 224786 transitions. [2018-10-23 20:10:05,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:10:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 215160 states and 224786 transitions. [2018-10-23 20:10:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1309 [2018-10-23 20:10:05,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:05,743 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:05,743 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:05,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:05,744 INFO L82 PathProgramCache]: Analyzing trace with hash -285665480, now seen corresponding path program 1 times [2018-10-23 20:10:05,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:05,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:05,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:05,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:05,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:06,850 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 20:10:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 20:10:08,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:08,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:10:08,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:08,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:08,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:08,735 INFO L87 Difference]: Start difference. First operand 215160 states and 224786 transitions. Second operand 4 states. [2018-10-23 20:10:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:17,281 INFO L93 Difference]: Finished difference Result 432569 states and 451935 transitions. [2018-10-23 20:10:17,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:10:17,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1308 [2018-10-23 20:10:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:17,531 INFO L225 Difference]: With dead ends: 432569 [2018-10-23 20:10:17,531 INFO L226 Difference]: Without dead ends: 218163 [2018-10-23 20:10:17,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218163 states. [2018-10-23 20:10:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218163 to 212899. [2018-10-23 20:10:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212899 states. [2018-10-23 20:10:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212899 states to 212899 states and 221771 transitions. [2018-10-23 20:10:20,264 INFO L78 Accepts]: Start accepts. Automaton has 212899 states and 221771 transitions. Word has length 1308 [2018-10-23 20:10:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:20,265 INFO L481 AbstractCegarLoop]: Abstraction has 212899 states and 221771 transitions. [2018-10-23 20:10:20,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 212899 states and 221771 transitions. [2018-10-23 20:10:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2018-10-23 20:10:20,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:20,407 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:20,407 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:20,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:20,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1723415744, now seen corresponding path program 1 times [2018-10-23 20:10:20,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:20,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:20,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:20,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:20,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 909 proven. 48 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-23 20:10:28,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:10:28,446 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:10:28,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:28,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:10:52,749 WARN L179 SmtUtils]: Spent 23.66 s on a formula simplification. DAG size of input: 145 DAG size of output: 46 [2018-10-23 20:10:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 957 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-23 20:10:55,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:10:55,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-10-23 20:10:55,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:10:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:10:55,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:10:55,167 INFO L87 Difference]: Start difference. First operand 212899 states and 221771 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 20:10:56,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:56,535 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:10:56,540 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:10:56,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:10:56 BoogieIcfgContainer [2018-10-23 20:10:56,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:10:56,542 INFO L168 Benchmark]: Toolchain (without parser) took 228551.36 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,543 INFO L168 Benchmark]: CDTParser took 0.27 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 20:10:56,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2029.40 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 638.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,545 INFO L168 Benchmark]: Boogie Preprocessor took 317.99 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,546 INFO L168 Benchmark]: RCFGBuilder took 8469.03 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -178.9 MB). Peak memory consumption was 628.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,547 INFO L168 Benchmark]: TraceAbstraction took 217090.80 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -426.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 20:10:56,552 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 2029.40 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 638.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 317.99 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: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8469.03 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 218.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -178.9 MB). Peak memory consumption was 628.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217090.80 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -426.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (212899states) and FLOYD_HOARE automaton (currently 4 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (891 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 216.9s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 150.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5783 SDtfs, 38330 SDslu, 1560 SDs, 0 SdLazy, 76563 SolverSat, 15381 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 118.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3542 GetRequests, 3478 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215160occurred in iteration=10, 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: 13.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 112356 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 37.4s InterpolantComputationTime, 10269 NumberOfCodeBlocks, 10269 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10252 ConstructedInterpolants, 49 QuantifiedInterpolants, 45507714 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 10220/11066 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown