java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:59:36,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:59:36,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:59:36,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:59:36,620 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:59:36,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:59:36,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:59:36,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:59:36,630 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:59:36,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:59:36,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:59:36,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:59:36,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:59:36,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:59:36,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:59:36,646 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:59:36,647 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:59:36,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:59:36,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:59:36,659 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:59:36,660 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:59:36,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:59:36,666 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:59:36,666 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:59:36,666 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:59:36,668 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:59:36,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:59:36,669 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:59:36,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:59:36,674 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:59:36,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:59:36,677 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:59:36,677 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:59:36,677 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:59:36,679 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:59:36,680 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:59:36,680 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:59:36,703 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:59:36,704 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:59:36,705 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:59:36,705 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:59:36,705 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:59:36,706 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:59:36,706 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:59:36,706 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:59:36,706 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:59:36,706 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:59:36,707 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:59:36,707 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:59:36,708 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:59:36,708 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:59:36,708 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:59:36,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:59:36,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:59:36,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:59:36,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:59:36,709 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:59:36,711 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:59:36,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:59:36,712 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:59:36,712 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:59:36,712 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:59:36,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:59:36,713 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:59:36,713 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:59:36,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:59:36,713 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:59:36,713 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:59:36,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:59:36,714 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:59:36,714 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:59:36,714 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:59:36,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:59:36,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:59:36,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:59:36,798 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:59:36,798 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:59:36,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-11-07 20:59:36,869 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766f6e8a/1d6e05c4a5e84245819f399d92df7d78/FLAG7621d6080 [2018-11-07 20:59:37,626 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:59:37,627 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-11-07 20:59:37,658 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766f6e8a/1d6e05c4a5e84245819f399d92df7d78/FLAG7621d6080 [2018-11-07 20:59:37,678 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766f6e8a/1d6e05c4a5e84245819f399d92df7d78 [2018-11-07 20:59:37,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:59:37,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:59:37,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:59:37,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:59:37,702 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:59:37,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:37" (1/1) ... [2018-11-07 20:59:37,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a14655d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:37, skipping insertion in model container [2018-11-07 20:59:37,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:59:37" (1/1) ... [2018-11-07 20:59:37,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:59:37,861 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:59:38,927 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:59:38,936 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:59:39,327 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:59:39,353 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:59:39,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39 WrapperNode [2018-11-07 20:59:39,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:59:39,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:59:39,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:59:39,356 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:59:39,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:59:39,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:59:39,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:59:39,651 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:59:39,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... [2018-11-07 20:59:39,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:59:39,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:59:39,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:59:39,884 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:59:39,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:59:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:59:39,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:59:39,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:59:39,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:59:39,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:59:39,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:59:39,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:59:39,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:59:39,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:59:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:59:39,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:59:48,813 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:59:48,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:48 BoogieIcfgContainer [2018-11-07 20:59:48,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:59:48,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:59:48,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:59:48,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:59:48,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:59:37" (1/3) ... [2018-11-07 20:59:48,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2822e717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:48, skipping insertion in model container [2018-11-07 20:59:48,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:59:39" (2/3) ... [2018-11-07 20:59:48,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2822e717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:59:48, skipping insertion in model container [2018-11-07 20:59:48,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:59:48" (3/3) ... [2018-11-07 20:59:48,823 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-11-07 20:59:48,835 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:59:48,847 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:59:48,863 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:59:48,917 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:59:48,917 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:59:48,917 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:59:48,917 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:59:48,917 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:59:48,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:59:48,918 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:59:48,918 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:59:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 20:59:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 20:59:48,965 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:48,966 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] [2018-11-07 20:59:48,969 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:48,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2043862628, now seen corresponding path program 1 times [2018-11-07 20:59:48,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:49,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:49,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:49,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:49,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:49,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:59:49,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:59:49,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:49,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:59:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:59:49,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:59:49,555 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 20:59:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:57,636 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-11-07 20:59:57,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:59:57,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-07 20:59:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:57,671 INFO L225 Difference]: With dead ends: 2166 [2018-11-07 20:59:57,671 INFO L226 Difference]: Without dead ends: 1556 [2018-11-07 20:59:57,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:59:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-11-07 20:59:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-11-07 20:59:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-11-07 20:59:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-11-07 20:59:57,827 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 68 [2018-11-07 20:59:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:57,828 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-11-07 20:59:57,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:59:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-11-07 20:59:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 20:59:57,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:57,837 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:59:57,838 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:57,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2068589566, now seen corresponding path program 1 times [2018-11-07 20:59:57,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:57,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:57,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:57,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:57,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:59:58,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:59:58,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:59:58,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:58,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:59:58,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:59:58,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:59:58,174 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-11-07 21:00:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:05,435 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-11-07 21:00:05,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:00:05,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 21:00:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:05,451 INFO L225 Difference]: With dead ends: 3059 [2018-11-07 21:00:05,451 INFO L226 Difference]: Without dead ends: 1997 [2018-11-07 21:00:05,456 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:00:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-11-07 21:00:05,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-11-07 21:00:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-11-07 21:00:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-11-07 21:00:05,546 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 144 [2018-11-07 21:00:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:05,546 INFO L480 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-11-07 21:00:05,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:00:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-11-07 21:00:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 21:00:05,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:05,552 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:00:05,552 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:05,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:05,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1218422790, now seen corresponding path program 1 times [2018-11-07 21:00:05,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:05,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:05,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:05,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:05,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:05,878 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:00:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:00:05,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:05,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:00:05,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:05,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:00:05,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:00:05,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:00:05,989 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-11-07 21:00:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:10,059 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-11-07 21:00:10,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:00:10,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 21:00:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:10,086 INFO L225 Difference]: With dead ends: 4880 [2018-11-07 21:00:10,086 INFO L226 Difference]: Without dead ends: 2911 [2018-11-07 21:00:10,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:00:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-11-07 21:00:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-11-07 21:00:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-11-07 21:00:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-11-07 21:00:10,192 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 148 [2018-11-07 21:00:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:10,193 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-11-07 21:00:10,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:00:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-11-07 21:00:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 21:00:10,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:10,197 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:00:10,197 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:10,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash -28677417, now seen corresponding path program 1 times [2018-11-07 21:00:10,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:10,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:10,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:10,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:10,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:00:10,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:10,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:00:10,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:10,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:00:10,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:00:10,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:10,442 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-11-07 21:00:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:14,730 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-11-07 21:00:14,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:00:14,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-11-07 21:00:14,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:14,745 INFO L225 Difference]: With dead ends: 5754 [2018-11-07 21:00:14,745 INFO L226 Difference]: Without dead ends: 2880 [2018-11-07 21:00:14,757 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-11-07 21:00:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-11-07 21:00:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-11-07 21:00:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-11-07 21:00:14,827 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 178 [2018-11-07 21:00:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:14,828 INFO L480 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-11-07 21:00:14,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:00:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-11-07 21:00:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 21:00:14,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:14,832 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:14,832 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:14,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1314675152, now seen corresponding path program 1 times [2018-11-07 21:00:14,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:14,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:14,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:14,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:14,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 21:00:15,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:15,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:00:15,104 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:00:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:00:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:15,105 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 4 states. [2018-11-07 21:00:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:21,554 INFO L93 Difference]: Finished difference Result 11062 states and 14732 transitions. [2018-11-07 21:00:21,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:00:21,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-07 21:00:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:21,590 INFO L225 Difference]: With dead ends: 11062 [2018-11-07 21:00:21,590 INFO L226 Difference]: Without dead ends: 8188 [2018-11-07 21:00:21,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8188 states. [2018-11-07 21:00:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8188 to 8188. [2018-11-07 21:00:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8188 states. [2018-11-07 21:00:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 10116 transitions. [2018-11-07 21:00:21,803 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 10116 transitions. Word has length 232 [2018-11-07 21:00:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:21,804 INFO L480 AbstractCegarLoop]: Abstraction has 8188 states and 10116 transitions. [2018-11-07 21:00:21,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:00:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 10116 transitions. [2018-11-07 21:00:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-11-07 21:00:21,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:21,812 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:21,813 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:21,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash 495416691, now seen corresponding path program 1 times [2018-11-07 21:00:21,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:21,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:21,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:21,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:21,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 122 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:00:22,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:22,486 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:22,487 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-11-07 21:00:22,489 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1154], [1156], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:00:22,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:22,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:23,144 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:23,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:23,158 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:00:23,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:23,197 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:23,879 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 75.77% of their original sizes. [2018-11-07 21:00:23,879 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:24,324 INFO L415 sIntCurrentIteration]: We unified 254 AI predicates to 254 [2018-11-07 21:00:24,324 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:24,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:24,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 21:00:24,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:24,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 21:00:24,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 21:00:24,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:00:24,327 INFO L87 Difference]: Start difference. First operand 8188 states and 10116 transitions. Second operand 8 states. [2018-11-07 21:01:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:01,017 INFO L93 Difference]: Finished difference Result 16806 states and 20694 transitions. [2018-11-07 21:01:01,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:01:01,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2018-11-07 21:01:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:01,051 INFO L225 Difference]: With dead ends: 16806 [2018-11-07 21:01:01,052 INFO L226 Difference]: Without dead ends: 8624 [2018-11-07 21:01:01,069 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:01:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2018-11-07 21:01:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8622. [2018-11-07 21:01:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8622 states. [2018-11-07 21:01:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8622 states to 8622 states and 10561 transitions. [2018-11-07 21:01:01,249 INFO L78 Accepts]: Start accepts. Automaton has 8622 states and 10561 transitions. Word has length 255 [2018-11-07 21:01:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:01,249 INFO L480 AbstractCegarLoop]: Abstraction has 8622 states and 10561 transitions. [2018-11-07 21:01:01,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 21:01:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8622 states and 10561 transitions. [2018-11-07 21:01:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-07 21:01:01,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:01,262 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:01:01,263 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:01,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:01,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1331578978, now seen corresponding path program 1 times [2018-11-07 21:01:01,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:01,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:01,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:01,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:01,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 193 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 21:01:01,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:01,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:01,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-11-07 21:01:01,816 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1154], [1156], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:01,821 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:01,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:01,869 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:02,537 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:02,538 INFO L272 AbstractInterpreter]: Visited 98 different actions 483 times. Merged at 8 different actions 38 times. Never widened. Found 9 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:01:02,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:02,579 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:02,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:02,580 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:02,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:02,595 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:02,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:03,125 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-11-07 21:01:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 276 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-07 21:01:03,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:01:04,770 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 21:01:06,596 WARN L179 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-07 21:01:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 193 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:01:07,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:01:07,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-11-07 21:01:07,202 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:01:07,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:01:07,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:01:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-11-07 21:01:07,204 INFO L87 Difference]: Start difference. First operand 8622 states and 10561 transitions. Second operand 10 states. [2018-11-07 21:01:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:23,157 INFO L93 Difference]: Finished difference Result 29048 states and 36797 transitions. [2018-11-07 21:01:23,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 21:01:23,160 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 307 [2018-11-07 21:01:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:23,272 INFO L225 Difference]: With dead ends: 29048 [2018-11-07 21:01:23,273 INFO L226 Difference]: Without dead ends: 20866 [2018-11-07 21:01:23,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 615 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2018-11-07 21:01:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20866 states. [2018-11-07 21:01:24,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20866 to 20817. [2018-11-07 21:01:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20817 states. [2018-11-07 21:01:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 25774 transitions. [2018-11-07 21:01:24,657 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 25774 transitions. Word has length 307 [2018-11-07 21:01:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:24,658 INFO L480 AbstractCegarLoop]: Abstraction has 20817 states and 25774 transitions. [2018-11-07 21:01:24,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 21:01:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 25774 transitions. [2018-11-07 21:01:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-07 21:01:24,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:24,675 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:01:24,675 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:24,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:24,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1063261437, now seen corresponding path program 1 times [2018-11-07 21:01:24,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:24,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:24,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:24,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:25,224 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-11-07 21:01:25,728 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 21:01:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 189 proven. 214 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 21:01:26,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:26,052 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:26,052 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 331 with the following transitions: [2018-11-07 21:01:26,053 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1154], [1156], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:26,059 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:26,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:26,115 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:26,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:26,630 INFO L272 AbstractInterpreter]: Visited 120 different actions 346 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:01:26,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:26,658 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:26,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:26,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:26,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:26,670 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:26,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-11-07 21:01:27,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:01:28,017 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-11-07 21:01:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 261 proven. 76 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 21:01:28,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:01:28,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-11-07 21:01:28,608 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:01:28,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 21:01:28,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 21:01:28,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-07 21:01:28,610 INFO L87 Difference]: Start difference. First operand 20817 states and 25774 transitions. Second operand 12 states. [2018-11-07 21:01:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:46,547 INFO L93 Difference]: Finished difference Result 51686 states and 65414 transitions. [2018-11-07 21:01:46,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-07 21:01:46,547 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 330 [2018-11-07 21:01:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:46,693 INFO L225 Difference]: With dead ends: 51686 [2018-11-07 21:01:46,693 INFO L226 Difference]: Without dead ends: 29047 [2018-11-07 21:01:46,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 712 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=811, Invalid=3881, Unknown=0, NotChecked=0, Total=4692 [2018-11-07 21:01:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29047 states. [2018-11-07 21:01:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29047 to 27013. [2018-11-07 21:01:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27013 states. [2018-11-07 21:01:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27013 states to 27013 states and 32458 transitions. [2018-11-07 21:01:47,343 INFO L78 Accepts]: Start accepts. Automaton has 27013 states and 32458 transitions. Word has length 330 [2018-11-07 21:01:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:47,344 INFO L480 AbstractCegarLoop]: Abstraction has 27013 states and 32458 transitions. [2018-11-07 21:01:47,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 21:01:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 27013 states and 32458 transitions. [2018-11-07 21:01:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 21:01:47,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:47,363 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:01:47,363 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:47,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1706258700, now seen corresponding path program 1 times [2018-11-07 21:01:47,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:47,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:47,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:47,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:47,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:48,090 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:01:48,299 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 21:01:48,501 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-11-07 21:01:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 185 proven. 124 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-07 21:01:48,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:48,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:48,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 21:01:48,732 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1154], [1156], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1360], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:48,736 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:48,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:48,830 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:49,776 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:49,776 INFO L272 AbstractInterpreter]: Visited 114 different actions 675 times. Merged at 8 different actions 48 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:01:49,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:49,822 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:49,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:49,822 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:49,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:49,837 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:49,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:50,808 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:01:51,217 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-11-07 21:01:54,921 WARN L179 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-11-07 21:02:02,234 WARN L179 SmtUtils]: Spent 5.11 s on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2018-11-07 21:02:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 4 proven. 413 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 21:02:02,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:02:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 297 proven. 64 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:02:03,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:02:03,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 6] total 24 [2018-11-07 21:02:03,170 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:02:03,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 21:02:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 21:02:03,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=473, Unknown=2, NotChecked=0, Total=552 [2018-11-07 21:02:03,171 INFO L87 Difference]: Start difference. First operand 27013 states and 32458 transitions. Second operand 20 states. [2018-11-07 21:03:13,058 WARN L179 SmtUtils]: Spent 10.56 s on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2018-11-07 21:03:21,012 WARN L179 SmtUtils]: Spent 6.46 s on a formula simplification. DAG size of input: 42 DAG size of output: 28 Received shutdown request... [2018-11-07 21:03:24,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 21:03:24,670 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:03:24,675 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:03:24,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:03:24 BoogieIcfgContainer [2018-11-07 21:03:24,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:03:24,677 INFO L168 Benchmark]: Toolchain (without parser) took 226984.03 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 998.3 MB in the end (delta: 401.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,678 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 21:03:24,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1658.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,680 INFO L168 Benchmark]: Boogie Preprocessor took 232.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,681 INFO L168 Benchmark]: RCFGBuilder took 8930.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.6 MB). Peak memory consumption was 464.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,681 INFO L168 Benchmark]: TraceAbstraction took 215859.88 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 998.3 MB in the end (delta: 745.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 21:03:24,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1658.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 232.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8930.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.6 MB). Peak memory consumption was 464.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215859.88 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 998.3 MB in the end (delta: 745.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was constructing difference of abstraction (27013states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (284 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 215.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 182.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3159 SDtfs, 19262 SDslu, 3714 SDs, 0 SdLazy, 38199 SolverSat, 6813 SolverUnsat, 88 SolverUnknown, 0 SolverNotchecked, 125.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2423 GetRequests, 2270 SyntacticMatches, 9 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1763 ImplicationChecksByTransitivity, 39.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27013occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9979737895905307 AbsIntWeakeningRatio, 0.1062992125984252 AbsIntAvgWeakeningVarsNumRemoved, 19.724409448818896 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2626 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 2993 NumberOfCodeBlocks, 2993 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3962 ConstructedInterpolants, 171 QuantifiedInterpolants, 6612682 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1680 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 3052/4372 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown