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/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 11:45:24,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 11:45:24,594 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 11:45:24,612 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 11:45:24,612 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 11:45:24,614 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 11:45:24,616 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 11:45:24,618 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 11:45:24,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 11:45:24,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 11:45:24,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 11:45:24,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 11:45:24,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 11:45:24,635 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 11:45:24,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 11:45:24,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 11:45:24,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 11:45:24,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 11:45:24,647 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 11:45:24,648 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 11:45:24,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 11:45:24,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 11:45:24,656 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 11:45:24,668 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 11:45:24,698 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 11:45:24,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 11:45:24,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 11:45:24,700 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 11:45:24,701 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 11:45:24,701 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 11:45:24,701 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 11:45:24,701 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 11:45:24,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 11:45:24,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 11:45:24,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 11:45:24,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 11:45:24,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 11:45:24,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 11:45:24,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:45:24,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 11:45:24,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 11:45:24,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 11:45:24,708 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 11:45:24,709 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 11:45:24,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 11:45:24,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 11:45:24,709 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 11:45:24,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 11:45:24,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 11:45:24,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 11:45:24,785 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 11:45:24,786 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 11:45:24,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-10-24 11:45:24,851 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d230a387/9115d8f21c684f0ab590365f257f6168/FLAGa46c0483e [2018-10-24 11:45:25,326 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 11:45:25,327 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-10-24 11:45:25,334 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d230a387/9115d8f21c684f0ab590365f257f6168/FLAGa46c0483e [2018-10-24 11:45:25,349 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d230a387/9115d8f21c684f0ab590365f257f6168 [2018-10-24 11:45:25,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 11:45:25,360 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 11:45:25,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:25,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 11:45:25,366 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 11:45:25,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25, skipping insertion in model container [2018-10-24 11:45:25,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 11:45:25,405 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 11:45:25,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:25,622 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 11:45:25,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 11:45:25,725 INFO L193 MainTranslator]: Completed translation [2018-10-24 11:45:25,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25 WrapperNode [2018-10-24 11:45:25,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 11:45:25,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:25,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 11:45:25,728 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 11:45:25,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 11:45:25,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 11:45:25,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 11:45:25,821 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 11:45:25,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... [2018-10-24 11:45:25,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 11:45:25,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 11:45:25,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 11:45:25,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 11:45:25,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 11:45:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-24 11:45:26,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-24 11:45:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 11:45:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 11:45:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-24 11:45:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-24 11:45:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-24 11:45:27,107 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 11:45:27,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:27 BoogieIcfgContainer [2018-10-24 11:45:27,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 11:45:27,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 11:45:27,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 11:45:27,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 11:45:27,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:25" (1/3) ... [2018-10-24 11:45:27,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:27, skipping insertion in model container [2018-10-24 11:45:27,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:25" (2/3) ... [2018-10-24 11:45:27,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb6c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:27, skipping insertion in model container [2018-10-24 11:45:27,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:27" (3/3) ... [2018-10-24 11:45:27,117 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-10-24 11:45:27,126 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 11:45:27,138 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 11:45:27,155 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 11:45:27,189 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 11:45:27,190 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 11:45:27,190 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 11:45:27,190 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 11:45:27,190 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 11:45:27,190 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 11:45:27,190 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 11:45:27,191 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 11:45:27,191 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 11:45:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2018-10-24 11:45:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-24 11:45:27,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:27,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:27,222 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:27,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash 780497550, now seen corresponding path program 1 times [2018-10-24 11:45:27,229 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:27,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:27,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:27,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:27,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 11:45:27,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 11:45:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 11:45:27,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:45:27,532 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 2 states. [2018-10-24 11:45:27,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:27,561 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2018-10-24 11:45:27,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 11:45:27,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 79 [2018-10-24 11:45:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:27,575 INFO L225 Difference]: With dead ends: 195 [2018-10-24 11:45:27,575 INFO L226 Difference]: Without dead ends: 114 [2018-10-24 11:45:27,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 11:45:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-24 11:45:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-24 11:45:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-24 11:45:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-10-24 11:45:27,632 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 79 [2018-10-24 11:45:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:27,633 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-10-24 11:45:27,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 11:45:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-10-24 11:45:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-24 11:45:27,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:27,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:27,637 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:27,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:27,638 INFO L82 PathProgramCache]: Analyzing trace with hash 164022017, now seen corresponding path program 1 times [2018-10-24 11:45:27,638 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:27,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:27,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:27,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:27,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 11:45:27,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:27,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:45:27,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:45:27,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:45:27,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:27,974 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 4 states. [2018-10-24 11:45:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:28,219 INFO L93 Difference]: Finished difference Result 200 states and 216 transitions. [2018-10-24 11:45:28,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:45:28,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2018-10-24 11:45:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:28,223 INFO L225 Difference]: With dead ends: 200 [2018-10-24 11:45:28,223 INFO L226 Difference]: Without dead ends: 159 [2018-10-24 11:45:28,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-24 11:45:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2018-10-24 11:45:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-24 11:45:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2018-10-24 11:45:28,239 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 82 [2018-10-24 11:45:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:28,239 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2018-10-24 11:45:28,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:45:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2018-10-24 11:45:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 11:45:28,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:28,243 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:28,244 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:28,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1577792099, now seen corresponding path program 1 times [2018-10-24 11:45:28,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:28,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:28,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:28,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:28,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 11:45:28,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:28,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:45:28,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:45:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:45:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:28,497 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand 4 states. [2018-10-24 11:45:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:28,657 INFO L93 Difference]: Finished difference Result 206 states and 222 transitions. [2018-10-24 11:45:28,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:45:28,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-10-24 11:45:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:28,660 INFO L225 Difference]: With dead ends: 206 [2018-10-24 11:45:28,660 INFO L226 Difference]: Without dead ends: 157 [2018-10-24 11:45:28,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 11:45:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-24 11:45:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 119. [2018-10-24 11:45:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-24 11:45:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2018-10-24 11:45:28,672 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 92 [2018-10-24 11:45:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:28,673 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2018-10-24 11:45:28,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:45:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2018-10-24 11:45:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 11:45:28,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:28,677 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:45:28,677 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:28,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:28,678 INFO L82 PathProgramCache]: Analyzing trace with hash 802083325, now seen corresponding path program 1 times [2018-10-24 11:45:28,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:28,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:28,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:28,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:28,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 11:45:28,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:28,930 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:28,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:29,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-24 11:45:29,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:29,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-10-24 11:45:29,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:45:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:45:29,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:45:29,463 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand 7 states. [2018-10-24 11:45:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:29,795 INFO L93 Difference]: Finished difference Result 246 states and 265 transitions. [2018-10-24 11:45:29,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 11:45:29,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2018-10-24 11:45:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:29,798 INFO L225 Difference]: With dead ends: 246 [2018-10-24 11:45:29,798 INFO L226 Difference]: Without dead ends: 203 [2018-10-24 11:45:29,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:45:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-24 11:45:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 141. [2018-10-24 11:45:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-24 11:45:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2018-10-24 11:45:29,812 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 92 [2018-10-24 11:45:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:29,813 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2018-10-24 11:45:29,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:45:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2018-10-24 11:45:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 11:45:29,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:29,816 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-10-24 11:45:29,816 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:29,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1197434401, now seen corresponding path program 1 times [2018-10-24 11:45:29,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:29,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:29,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:29,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:29,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 11:45:30,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:30,269 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:30,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:30,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 11:45:30,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:30,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-10-24 11:45:30,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:45:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:45:30,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:45:30,563 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 9 states. [2018-10-24 11:45:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:30,999 INFO L93 Difference]: Finished difference Result 309 states and 334 transitions. [2018-10-24 11:45:31,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 11:45:31,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2018-10-24 11:45:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:31,004 INFO L225 Difference]: With dead ends: 309 [2018-10-24 11:45:31,004 INFO L226 Difference]: Without dead ends: 248 [2018-10-24 11:45:31,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:45:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-24 11:45:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 165. [2018-10-24 11:45:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-24 11:45:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2018-10-24 11:45:31,023 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 102 [2018-10-24 11:45:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:31,023 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2018-10-24 11:45:31,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:45:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2018-10-24 11:45:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 11:45:31,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:31,028 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 11:45:31,028 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:31,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash -102032963, now seen corresponding path program 2 times [2018-10-24 11:45:31,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:31,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:31,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:31,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:31,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-24 11:45:31,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:31,303 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:31,313 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:45:31,357 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-10-24 11:45:31,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:31,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 11:45:31,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 11:45:31,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2018-10-24 11:45:31,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:45:31,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:45:31,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:45:31,457 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand 9 states. [2018-10-24 11:45:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:31,919 INFO L93 Difference]: Finished difference Result 371 states and 402 transitions. [2018-10-24 11:45:31,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 11:45:31,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2018-10-24 11:45:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:31,922 INFO L225 Difference]: With dead ends: 371 [2018-10-24 11:45:31,923 INFO L226 Difference]: Without dead ends: 292 [2018-10-24 11:45:31,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:45:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-24 11:45:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 191. [2018-10-24 11:45:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-24 11:45:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 205 transitions. [2018-10-24 11:45:31,939 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 205 transitions. Word has length 112 [2018-10-24 11:45:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:31,940 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 205 transitions. [2018-10-24 11:45:31,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:45:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 205 transitions. [2018-10-24 11:45:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 11:45:31,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:31,942 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-24 11:45:31,943 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:31,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:31,943 INFO L82 PathProgramCache]: Analyzing trace with hash 202890186, now seen corresponding path program 1 times [2018-10-24 11:45:31,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:31,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:31,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:31,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:31,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 11:45:32,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:32,203 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:32,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:32,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 11:45:32,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:32,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-24 11:45:32,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 11:45:32,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 11:45:32,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-10-24 11:45:32,508 INFO L87 Difference]: Start difference. First operand 191 states and 205 transitions. Second operand 13 states. [2018-10-24 11:45:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:32,855 INFO L93 Difference]: Finished difference Result 436 states and 472 transitions. [2018-10-24 11:45:32,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 11:45:32,856 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 133 [2018-10-24 11:45:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:32,859 INFO L225 Difference]: With dead ends: 436 [2018-10-24 11:45:32,860 INFO L226 Difference]: Without dead ends: 337 [2018-10-24 11:45:32,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=104, Unknown=0, NotChecked=0, Total=182 [2018-10-24 11:45:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-10-24 11:45:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 215. [2018-10-24 11:45:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-24 11:45:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 232 transitions. [2018-10-24 11:45:32,876 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 232 transitions. Word has length 133 [2018-10-24 11:45:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:32,877 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 232 transitions. [2018-10-24 11:45:32,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 11:45:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 232 transitions. [2018-10-24 11:45:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 11:45:32,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:32,879 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2018-10-24 11:45:32,880 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:32,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:32,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1792969134, now seen corresponding path program 2 times [2018-10-24 11:45:32,880 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:32,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:32,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:32,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:32,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 11:45:33,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 11:45:33,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 11:45:33,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 11:45:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 11:45:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:33,151 INFO L87 Difference]: Start difference. First operand 215 states and 232 transitions. Second operand 4 states. [2018-10-24 11:45:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:33,309 INFO L93 Difference]: Finished difference Result 389 states and 426 transitions. [2018-10-24 11:45:33,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 11:45:33,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-10-24 11:45:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:33,311 INFO L225 Difference]: With dead ends: 389 [2018-10-24 11:45:33,311 INFO L226 Difference]: Without dead ends: 290 [2018-10-24 11:45:33,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 11:45:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-10-24 11:45:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 225. [2018-10-24 11:45:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-24 11:45:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 242 transitions. [2018-10-24 11:45:33,327 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 242 transitions. Word has length 143 [2018-10-24 11:45:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:33,328 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 242 transitions. [2018-10-24 11:45:33,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 11:45:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 242 transitions. [2018-10-24 11:45:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 11:45:33,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:33,331 INFO L375 BasicCegarLoop]: trace histogram [10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2018-10-24 11:45:33,331 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:33,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash -811429050, now seen corresponding path program 1 times [2018-10-24 11:45:33,332 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:33,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:33,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:33,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:33,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-24 11:45:33,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:33,685 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:33,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:33,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-24 11:45:34,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:34,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-10-24 11:45:34,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 11:45:34,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 11:45:34,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:45:34,016 INFO L87 Difference]: Start difference. First operand 225 states and 242 transitions. Second operand 7 states. [2018-10-24 11:45:34,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:34,097 INFO L93 Difference]: Finished difference Result 472 states and 514 transitions. [2018-10-24 11:45:34,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 11:45:34,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2018-10-24 11:45:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:34,099 INFO L225 Difference]: With dead ends: 472 [2018-10-24 11:45:34,100 INFO L226 Difference]: Without dead ends: 365 [2018-10-24 11:45:34,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 11:45:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-24 11:45:34,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 300. [2018-10-24 11:45:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-10-24 11:45:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 322 transitions. [2018-10-24 11:45:34,118 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 322 transitions. Word has length 198 [2018-10-24 11:45:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:34,119 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 322 transitions. [2018-10-24 11:45:34,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 11:45:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 322 transitions. [2018-10-24 11:45:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 11:45:34,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:34,128 INFO L375 BasicCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2018-10-24 11:45:34,128 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:34,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash 620066222, now seen corresponding path program 2 times [2018-10-24 11:45:34,129 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:34,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:34,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:34,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:45:34,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 226 proven. 15 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 11:45:34,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:34,404 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:34,417 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:45:46,539 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:45:46,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:46,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:45:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 226 proven. 15 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 11:45:46,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:45:46,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-10-24 11:45:46,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:45:46,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:45:46,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:45:46,797 INFO L87 Difference]: Start difference. First operand 300 states and 322 transitions. Second operand 9 states. [2018-10-24 11:45:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:45:46,992 INFO L93 Difference]: Finished difference Result 607 states and 658 transitions. [2018-10-24 11:45:46,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 11:45:46,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2018-10-24 11:45:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:45:46,995 INFO L225 Difference]: With dead ends: 607 [2018-10-24 11:45:46,995 INFO L226 Difference]: Without dead ends: 440 [2018-10-24 11:45:46,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:45:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-10-24 11:45:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 375. [2018-10-24 11:45:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-24 11:45:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 402 transitions. [2018-10-24 11:45:47,013 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 402 transitions. Word has length 253 [2018-10-24 11:45:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:45:47,013 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 402 transitions. [2018-10-24 11:45:47,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:45:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 402 transitions. [2018-10-24 11:45:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 11:45:47,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:45:47,018 INFO L375 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2018-10-24 11:45:47,018 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:45:47,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:45:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash -979153338, now seen corresponding path program 3 times [2018-10-24 11:45:47,019 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:45:47,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:45:47,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:47,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:45:47,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:45:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:45:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1423 backedges. 462 proven. 39 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2018-10-24 11:45:47,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:45:47,684 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:45:47,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:45:59,796 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-24 11:45:59,796 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:45:59,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1423 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2018-10-24 11:46:00,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:00,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-10-24 11:46:00,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 11:46:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 11:46:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 11:46:00,092 INFO L87 Difference]: Start difference. First operand 375 states and 402 transitions. Second operand 9 states. [2018-10-24 11:46:01,125 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 11:46:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:01,959 INFO L93 Difference]: Finished difference Result 780 states and 841 transitions. [2018-10-24 11:46:01,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 11:46:01,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 308 [2018-10-24 11:46:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:01,964 INFO L225 Difference]: With dead ends: 780 [2018-10-24 11:46:01,964 INFO L226 Difference]: Without dead ends: 553 [2018-10-24 11:46:01,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2018-10-24 11:46:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2018-10-24 11:46:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 461. [2018-10-24 11:46:02,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-10-24 11:46:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 493 transitions. [2018-10-24 11:46:02,006 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 493 transitions. Word has length 308 [2018-10-24 11:46:02,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:02,007 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 493 transitions. [2018-10-24 11:46:02,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 11:46:02,007 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 493 transitions. [2018-10-24 11:46:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-24 11:46:02,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:02,013 INFO L375 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:02,013 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:02,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:02,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1418268451, now seen corresponding path program 4 times [2018-10-24 11:46:02,014 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:02,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:02,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:02,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:46:02,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2421 backedges. 786 proven. 74 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2018-10-24 11:46:02,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:02,704 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:02,712 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:46:02,811 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:46:02,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:46:02,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2421 backedges. 49 proven. 642 refuted. 0 times theorem prover too weak. 1730 trivial. 0 not checked. [2018-10-24 11:46:03,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:03,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2018-10-24 11:46:03,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 11:46:03,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 11:46:03,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-24 11:46:03,129 INFO L87 Difference]: Start difference. First operand 461 states and 493 transitions. Second operand 16 states. [2018-10-24 11:46:04,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:04,649 INFO L93 Difference]: Finished difference Result 946 states and 1016 transitions. [2018-10-24 11:46:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 11:46:04,650 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 374 [2018-10-24 11:46:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:04,653 INFO L225 Difference]: With dead ends: 946 [2018-10-24 11:46:04,653 INFO L226 Difference]: Without dead ends: 648 [2018-10-24 11:46:04,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2018-10-24 11:46:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2018-10-24 11:46:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 547. [2018-10-24 11:46:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-24 11:46:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 584 transitions. [2018-10-24 11:46:04,681 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 584 transitions. Word has length 374 [2018-10-24 11:46:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:04,681 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 584 transitions. [2018-10-24 11:46:04,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 11:46:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 584 transitions. [2018-10-24 11:46:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-10-24 11:46:04,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:04,685 INFO L375 BasicCegarLoop]: trace histogram [30, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:04,686 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:04,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:04,686 INFO L82 PathProgramCache]: Analyzing trace with hash 199574502, now seen corresponding path program 5 times [2018-10-24 11:46:04,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:04,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:04,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:04,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:46:04,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 1198 proven. 120 refuted. 0 times theorem prover too weak. 2387 trivial. 0 not checked. [2018-10-24 11:46:05,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:05,435 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:05,443 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:46:07,040 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-24 11:46:07,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:46:07,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2145 proven. 120 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2018-10-24 11:46:07,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:07,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2018-10-24 11:46:07,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 11:46:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 11:46:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=161, Unknown=0, NotChecked=0, Total=272 [2018-10-24 11:46:07,332 INFO L87 Difference]: Start difference. First operand 547 states and 584 transitions. Second operand 17 states. [2018-10-24 11:46:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:07,488 INFO L93 Difference]: Finished difference Result 1066 states and 1149 transitions. [2018-10-24 11:46:07,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 11:46:07,489 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 440 [2018-10-24 11:46:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:07,492 INFO L225 Difference]: With dead ends: 1066 [2018-10-24 11:46:07,493 INFO L226 Difference]: Without dead ends: 697 [2018-10-24 11:46:07,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=161, Unknown=0, NotChecked=0, Total=272 [2018-10-24 11:46:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-24 11:46:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2018-10-24 11:46:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2018-10-24 11:46:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 744 transitions. [2018-10-24 11:46:07,522 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 744 transitions. Word has length 440 [2018-10-24 11:46:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:07,522 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 744 transitions. [2018-10-24 11:46:07,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 11:46:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 744 transitions. [2018-10-24 11:46:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-10-24 11:46:07,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:07,527 INFO L375 BasicCegarLoop]: trace histogram [40, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:07,527 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:07,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:07,528 INFO L82 PathProgramCache]: Analyzing trace with hash -885080346, now seen corresponding path program 6 times [2018-10-24 11:46:07,528 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:07,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:07,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:07,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:46:07,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7050 backedges. 2286 proven. 245 refuted. 0 times theorem prover too weak. 4519 trivial. 0 not checked. [2018-10-24 11:46:08,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:08,077 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:08,086 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 11:46:38,171 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-24 11:46:38,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:46:38,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7050 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7011 trivial. 0 not checked. [2018-10-24 11:46:39,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:39,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2018-10-24 11:46:39,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 11:46:39,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 11:46:39,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-10-24 11:46:39,485 INFO L87 Difference]: Start difference. First operand 697 states and 744 transitions. Second operand 15 states. [2018-10-24 11:46:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:40,891 INFO L93 Difference]: Finished difference Result 1382 states and 1479 transitions. [2018-10-24 11:46:40,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-24 11:46:40,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 550 [2018-10-24 11:46:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:40,897 INFO L225 Difference]: With dead ends: 1382 [2018-10-24 11:46:40,898 INFO L226 Difference]: Without dead ends: 893 [2018-10-24 11:46:40,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=931, Invalid=1931, Unknown=0, NotChecked=0, Total=2862 [2018-10-24 11:46:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2018-10-24 11:46:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 783. [2018-10-24 11:46:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2018-10-24 11:46:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 835 transitions. [2018-10-24 11:46:40,931 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 835 transitions. Word has length 550 [2018-10-24 11:46:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:40,931 INFO L481 AbstractCegarLoop]: Abstraction has 783 states and 835 transitions. [2018-10-24 11:46:40,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 11:46:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 835 transitions. [2018-10-24 11:46:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-10-24 11:46:40,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:40,937 INFO L375 BasicCegarLoop]: trace histogram [45, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:40,937 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:40,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -789252035, now seen corresponding path program 7 times [2018-10-24 11:46:40,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:40,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:40,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:40,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:46:40,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9170 backedges. 2962 proven. 324 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2018-10-24 11:46:41,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:41,759 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:41,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:46:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:41,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9170 backedges. 2962 proven. 324 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2018-10-24 11:46:42,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:42,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-10-24 11:46:42,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 11:46:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 11:46:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:46:42,330 INFO L87 Difference]: Start difference. First operand 783 states and 835 transitions. Second operand 21 states. [2018-10-24 11:46:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:42,698 INFO L93 Difference]: Finished difference Result 1483 states and 1588 transitions. [2018-10-24 11:46:42,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 11:46:42,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 616 [2018-10-24 11:46:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:42,704 INFO L225 Difference]: With dead ends: 1483 [2018-10-24 11:46:42,704 INFO L226 Difference]: Without dead ends: 923 [2018-10-24 11:46:42,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2018-10-24 11:46:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2018-10-24 11:46:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 858. [2018-10-24 11:46:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2018-10-24 11:46:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 915 transitions. [2018-10-24 11:46:42,743 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 915 transitions. Word has length 616 [2018-10-24 11:46:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:42,743 INFO L481 AbstractCegarLoop]: Abstraction has 858 states and 915 transitions. [2018-10-24 11:46:42,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 11:46:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 915 transitions. [2018-10-24 11:46:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-10-24 11:46:42,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:42,749 INFO L375 BasicCegarLoop]: trace histogram [50, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:42,750 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:42,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash 505398693, now seen corresponding path program 8 times [2018-10-24 11:46:42,750 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:42,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:42,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:42,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 11:46:42,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11530 backedges. 3726 proven. 414 refuted. 0 times theorem prover too weak. 7390 trivial. 0 not checked. [2018-10-24 11:46:43,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:43,430 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:43,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 11:46:51,259 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 11:46:51,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:46:51,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:46:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11530 backedges. 3726 proven. 414 refuted. 0 times theorem prover too weak. 7390 trivial. 0 not checked. [2018-10-24 11:46:51,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:46:51,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-10-24 11:46:51,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 11:46:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 11:46:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2018-10-24 11:46:51,901 INFO L87 Difference]: Start difference. First operand 858 states and 915 transitions. Second operand 23 states. [2018-10-24 11:46:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:46:52,089 INFO L93 Difference]: Finished difference Result 1618 states and 1732 transitions. [2018-10-24 11:46:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 11:46:52,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 671 [2018-10-24 11:46:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:46:52,093 INFO L225 Difference]: With dead ends: 1618 [2018-10-24 11:46:52,094 INFO L226 Difference]: Without dead ends: 998 [2018-10-24 11:46:52,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2018-10-24 11:46:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2018-10-24 11:46:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 933. [2018-10-24 11:46:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2018-10-24 11:46:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 995 transitions. [2018-10-24 11:46:52,129 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 995 transitions. Word has length 671 [2018-10-24 11:46:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:46:52,130 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 995 transitions. [2018-10-24 11:46:52,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 11:46:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 995 transitions. [2018-10-24 11:46:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-10-24 11:46:52,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:46:52,137 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:46:52,138 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:46:52,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:46:52,138 INFO L82 PathProgramCache]: Analyzing trace with hash 329223229, now seen corresponding path program 9 times [2018-10-24 11:46:52,138 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:46:52,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:46:52,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:52,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:46:52,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:46:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:46:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14165 backedges. 4578 proven. 515 refuted. 0 times theorem prover too weak. 9072 trivial. 0 not checked. [2018-10-24 11:46:53,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:46:53,206 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:46:53,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 11:47:21,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-24 11:47:21,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:47:21,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:47:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14165 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 14091 trivial. 0 not checked. [2018-10-24 11:47:21,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:47:21,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2018-10-24 11:47:21,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 11:47:21,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 11:47:21,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2018-10-24 11:47:21,727 INFO L87 Difference]: Start difference. First operand 933 states and 995 transitions. Second operand 19 states. [2018-10-24 11:47:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:47:24,560 INFO L93 Difference]: Finished difference Result 2003 states and 2142 transitions. [2018-10-24 11:47:24,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-24 11:47:24,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 726 [2018-10-24 11:47:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:47:24,565 INFO L225 Difference]: With dead ends: 2003 [2018-10-24 11:47:24,565 INFO L226 Difference]: Without dead ends: 1323 [2018-10-24 11:47:24,569 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2166, Invalid=4806, Unknown=0, NotChecked=0, Total=6972 [2018-10-24 11:47:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2018-10-24 11:47:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1019. [2018-10-24 11:47:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2018-10-24 11:47:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1086 transitions. [2018-10-24 11:47:24,606 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1086 transitions. Word has length 726 [2018-10-24 11:47:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:47:24,606 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1086 transitions. [2018-10-24 11:47:24,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 11:47:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1086 transitions. [2018-10-24 11:47:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-10-24 11:47:24,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:47:24,613 INFO L375 BasicCegarLoop]: trace histogram [60, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:47:24,614 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:47:24,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:47:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1764194182, now seen corresponding path program 10 times [2018-10-24 11:47:24,614 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:47:24,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:47:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:24,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:47:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:47:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 17121 backedges. 5518 proven. 627 refuted. 0 times theorem prover too weak. 10976 trivial. 0 not checked. [2018-10-24 11:47:25,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:47:25,629 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:47:25,641 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 11:47:25,849 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 11:47:25,849 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:47:25,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:47:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17121 backedges. 525 proven. 5248 refuted. 0 times theorem prover too weak. 11348 trivial. 0 not checked. [2018-10-24 11:47:26,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:47:26,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 33 [2018-10-24 11:47:26,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-24 11:47:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-24 11:47:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2018-10-24 11:47:26,872 INFO L87 Difference]: Start difference. First operand 1019 states and 1086 transitions. Second operand 33 states. [2018-10-24 11:47:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:47:30,594 INFO L93 Difference]: Finished difference Result 2390 states and 2557 transitions. [2018-10-24 11:47:30,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-24 11:47:30,595 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 792 [2018-10-24 11:47:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:47:30,600 INFO L225 Difference]: With dead ends: 2390 [2018-10-24 11:47:30,600 INFO L226 Difference]: Without dead ends: 1639 [2018-10-24 11:47:30,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5182 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2675, Invalid=13837, Unknown=0, NotChecked=0, Total=16512 [2018-10-24 11:47:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2018-10-24 11:47:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1105. [2018-10-24 11:47:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2018-10-24 11:47:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1177 transitions. [2018-10-24 11:47:30,648 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1177 transitions. Word has length 792 [2018-10-24 11:47:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:47:30,649 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1177 transitions. [2018-10-24 11:47:30,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-24 11:47:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1177 transitions. [2018-10-24 11:47:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2018-10-24 11:47:30,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:47:30,657 INFO L375 BasicCegarLoop]: trace histogram [65, 60, 60, 60, 60, 60, 60, 60, 60, 60, 60, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:47:30,658 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:47:30,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:47:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1622357917, now seen corresponding path program 11 times [2018-10-24 11:47:30,658 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:47:30,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:47:30,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:30,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:47:30,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:47:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20363 backedges. 6546 proven. 750 refuted. 0 times theorem prover too weak. 13067 trivial. 0 not checked. [2018-10-24 11:47:31,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:47:31,434 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:47:31,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-24 11:47:44,047 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2018-10-24 11:47:44,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:47:44,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:47:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20363 backedges. 11458 proven. 750 refuted. 0 times theorem prover too weak. 8155 trivial. 0 not checked. [2018-10-24 11:47:44,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:47:44,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2018-10-24 11:47:44,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-24 11:47:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-24 11:47:44,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2018-10-24 11:47:44,805 INFO L87 Difference]: Start difference. First operand 1105 states and 1177 transitions. Second operand 29 states. [2018-10-24 11:47:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 11:47:45,026 INFO L93 Difference]: Finished difference Result 2067 states and 2208 transitions. [2018-10-24 11:47:45,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 11:47:45,027 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 858 [2018-10-24 11:47:45,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 11:47:45,032 INFO L225 Difference]: With dead ends: 2067 [2018-10-24 11:47:45,032 INFO L226 Difference]: Without dead ends: 1245 [2018-10-24 11:47:45,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2018-10-24 11:47:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2018-10-24 11:47:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1180. [2018-10-24 11:47:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2018-10-24 11:47:45,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1257 transitions. [2018-10-24 11:47:45,074 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1257 transitions. Word has length 858 [2018-10-24 11:47:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 11:47:45,075 INFO L481 AbstractCegarLoop]: Abstraction has 1180 states and 1257 transitions. [2018-10-24 11:47:45,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-24 11:47:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1257 transitions. [2018-10-24 11:47:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2018-10-24 11:47:45,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 11:47:45,084 INFO L375 BasicCegarLoop]: trace histogram [70, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 11:47:45,084 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 11:47:45,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 11:47:45,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1209358075, now seen corresponding path program 12 times [2018-10-24 11:47:45,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 11:47:45,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 11:47:45,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:45,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 11:47:45,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 11:47:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 11:47:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 23823 backedges. 7662 proven. 884 refuted. 0 times theorem prover too weak. 15277 trivial. 0 not checked. [2018-10-24 11:47:46,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 11:47:46,035 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 11:47:46,043 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-24 11:48:21,471 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-10-24 11:48:21,471 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 11:48:21,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 11:48:22,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-10-24 11:48:22,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-24 11:48:22,012 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,017 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,027 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,028 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-10-24 11:48:22,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-10-24 11:48:22,137 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:22,139 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-24 11:48:22,139 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,151 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,162 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,163 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:30, output treesize:26 [2018-10-24 11:48:22,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2018-10-24 11:48:22,292 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:22,309 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 45 [2018-10-24 11:48:22,311 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-24 11:48:22,351 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:48:22,430 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:48:22,430 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:41, output treesize:75 [2018-10-24 11:48:22,865 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-24 11:48:22,913 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2018-10-24 11:48:22,951 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:22,969 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2018-10-24 11:48:22,970 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:22,990 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:23,071 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2018-10-24 11:48:23,078 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:23,150 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 65 [2018-10-24 11:48:23,152 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 4 xjuncts. [2018-10-24 11:48:23,213 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-24 11:48:23,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-24 11:48:23,270 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:102, output treesize:94 [2018-10-24 11:48:24,126 WARN L179 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2018-10-24 11:48:24,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2018-10-24 11:48:24,553 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:24,558 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:24,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 56 [2018-10-24 11:48:24,564 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:24,588 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:24,654 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2018-10-24 11:48:24,659 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:24,666 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:24,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 56 [2018-10-24 11:48:24,679 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:24,702 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:24,803 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-24 11:48:24,803 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:135, output treesize:129 [2018-10-24 11:48:26,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2018-10-24 11:48:26,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:26,227 INFO L700 Elim1Store]: detected not equals via solver [2018-10-24 11:48:26,281 INFO L303 Elim1Store]: Index analysis took 119 ms [2018-10-24 11:48:26,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2018-10-24 11:48:26,283 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-24 11:48:26,347 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:26,355 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-24 11:48:26,356 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:3 [2018-10-24 11:48:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23823 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 23767 trivial. 0 not checked. [2018-10-24 11:48:32,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 11:48:32,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 35 [2018-10-24 11:48:32,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-24 11:48:32,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-24 11:48:32,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2018-10-24 11:48:32,154 INFO L87 Difference]: Start difference. First operand 1180 states and 1257 transitions. Second operand 35 states. [2018-10-24 11:48:34,364 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2018-10-24 11:48:34,751 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 36 [2018-10-24 11:48:35,105 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2018-10-24 11:48:35,530 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 33 [2018-10-24 11:48:36,287 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2018-10-24 11:48:37,385 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2018-10-24 11:48:39,423 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2018-10-24 11:48:40,189 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 40 [2018-10-24 11:48:43,984 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-24 11:48:44,169 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2018-10-24 11:48:44,598 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:44,852 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:45,086 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:45,357 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:45,637 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:45,888 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:46,163 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:46,417 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:46,739 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:47,001 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:47,279 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:47,551 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:47,832 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 52 [2018-10-24 11:48:50,046 WARN L179 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-10-24 11:48:50,591 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2018-10-24 11:48:50,820 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 Received shutdown request... [2018-10-24 11:49:50,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-24 11:49:50,887 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 11:49:50,892 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 11:49:50,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:49:50 BoogieIcfgContainer [2018-10-24 11:49:50,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 11:49:50,893 INFO L168 Benchmark]: Toolchain (without parser) took 265533.33 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.4 MB). Peak memory consumption was 748.9 MB. Max. memory is 7.1 GB. [2018-10-24 11:49:50,894 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:49:50,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 11:49:50,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:49:50,896 INFO L168 Benchmark]: Boogie Preprocessor took 72.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 11:49:50,896 INFO L168 Benchmark]: RCFGBuilder took 1212.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2018-10-24 11:49:50,897 INFO L168 Benchmark]: TraceAbstraction took 263782.70 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 795.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -49.1 MB). Peak memory consumption was 746.8 MB. Max. memory is 7.1 GB. [2018-10-24 11:49:50,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 364.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 94.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1212.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263782.70 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 795.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -49.1 MB). Peak memory consumption was 746.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was constructing difference of abstraction (1180states) and FLOYD_HOARE automaton (currently 105 states, 35 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 137 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 134 locations, 1 error locations. TIMEOUT Result, 263.7s OverallTime, 20 OverallIterations, 70 TraceHistogramMax, 93.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2243 SDtfs, 23555 SDslu, 16435 SDs, 0 SdLazy, 6332 SolverSat, 1572 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 61.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7651 GetRequests, 7059 SyntacticMatches, 0 SemanticMatches, 591 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14871 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1180occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 1978 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 140.5s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 14672 NumberOfCodeBlocks, 12855 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 14636 ConstructedInterpolants, 827 QuantifiedInterpolants, 50638172 SizeOfPredicates, 48 NumberOfNonLiveVariables, 8807 ConjunctsInSsa, 165 ConjunctsInUnsatCore, 36 InterpolantComputations, 5 PerfectInterpolantSequences, 212114/223918 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown