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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:37:45,617 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:37:45,619 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:37:45,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:37:45,637 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:37:45,638 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:37:45,641 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:37:45,644 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:37:45,647 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:37:45,647 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:37:45,649 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:37:45,649 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:37:45,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:37:45,652 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:37:45,659 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:37:45,660 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:37:45,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:37:45,665 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:37:45,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:37:45,672 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:37:45,673 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:37:45,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:37:45,679 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:37:45,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:37:45,679 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:37:45,680 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:37:45,681 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:37:45,682 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:37:45,687 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:37:45,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:37:45,690 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:37:45,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:37:45,691 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:37:45,691 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:37:45,692 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:37:45,693 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:37:45,693 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:37:45,727 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:37:45,728 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:37:45,729 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:37:45,732 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:37:45,732 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:37:45,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:37:45,733 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:37:45,733 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:37:45,733 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:37:45,733 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:37:45,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:37:45,734 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:37:45,734 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:37:45,734 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:37:45,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:37:45,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:37:45,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:37:45,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:37:45,736 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:37:45,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:37:45,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:37:45,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:37:45,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:37:45,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:37:45,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:37:45,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:37:45,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:37:45,737 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:37:45,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:37:45,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:37:45,738 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:37:45,738 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:37:45,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:37:45,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:37:45,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:37:45,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:37:45,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:37:45,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:37:45,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:37:45,806 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:37:45,806 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:37:45,807 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-11-07 08:37:45,872 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd203f3d/c657e1afffae4943a5a8b83196556fa4/FLAG8b0732cbc [2018-11-07 08:37:46,633 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:37:46,634 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label12_true-unreach-call.c [2018-11-07 08:37:46,666 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd203f3d/c657e1afffae4943a5a8b83196556fa4/FLAG8b0732cbc [2018-11-07 08:37:46,681 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd203f3d/c657e1afffae4943a5a8b83196556fa4 [2018-11-07 08:37:46,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:37:46,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:37:46,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:37:46,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:37:46,703 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:37:46,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:37:46" (1/1) ... [2018-11-07 08:37:46,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465fd05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:46, skipping insertion in model container [2018-11-07 08:37:46,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:37:46" (1/1) ... [2018-11-07 08:37:46,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:37:46,904 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:37:48,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:37:48,408 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:37:49,042 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:37:49,073 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:37:49,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49 WrapperNode [2018-11-07 08:37:49,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:37:49,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:37:49,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:37:49,075 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:37:49,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:37:49,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:37:49,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:37:49,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:37:49,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (1/1) ... [2018-11-07 08:37:49,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:37:49,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:37:49,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:37:49,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:37:49,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (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 08:37:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:37:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:37:49,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:37:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:37:49,719 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:37:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:37:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:37:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:37:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:37:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:37:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:37:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:37:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:37:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:37:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:37:58,811 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:37:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:37:58 BoogieIcfgContainer [2018-11-07 08:37:58,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:37:58,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:37:58,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:37:58,817 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:37:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:37:46" (1/3) ... [2018-11-07 08:37:58,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5d3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:37:58, skipping insertion in model container [2018-11-07 08:37:58,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:49" (2/3) ... [2018-11-07 08:37:58,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5d3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:37:58, skipping insertion in model container [2018-11-07 08:37:58,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:37:58" (3/3) ... [2018-11-07 08:37:58,821 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label12_true-unreach-call.c [2018-11-07 08:37:58,831 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:37:58,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:37:58,970 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:37:59,018 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:37:59,018 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:37:59,018 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:37:59,018 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:37:59,019 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:37:59,019 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:37:59,019 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:37:59,019 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:37:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 08:37:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 08:37:59,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:37:59,099 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] [2018-11-07 08:37:59,101 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:37:59,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:59,109 INFO L82 PathProgramCache]: Analyzing trace with hash -653168765, now seen corresponding path program 1 times [2018-11-07 08:37:59,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:37:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:59,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:59,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:59,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:37:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:59,725 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 08:37:59,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:37:59,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:37:59,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:37:59,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:37:59,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:37:59,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:37:59,755 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 08:38:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:07,456 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 08:38:07,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:38:07,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-11-07 08:38:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:07,507 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 08:38:07,507 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 08:38:07,524 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:38:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 08:38:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 08:38:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 08:38:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 08:38:07,690 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 65 [2018-11-07 08:38:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:07,691 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 08:38:07,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:38:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 08:38:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 08:38:07,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:07,702 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:38:07,703 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:07,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1735878332, now seen corresponding path program 1 times [2018-11-07 08:38:07,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:07,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:07,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:07,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:07,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:08,076 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:38:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:08,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:08,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:38:08,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:08,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:38:08,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:38:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:38:08,198 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 08:38:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:17,653 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 08:38:17,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:38:17,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-11-07 08:38:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:17,675 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 08:38:17,676 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 08:38:17,681 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:38:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 08:38:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 08:38:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 08:38:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 08:38:17,795 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 139 [2018-11-07 08:38:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:17,796 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 08:38:17,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:38:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 08:38:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 08:38:17,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:17,800 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:38:17,800 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:17,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:17,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2022768053, now seen corresponding path program 1 times [2018-11-07 08:38:17,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:17,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:17,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:17,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:17,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:18,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:18,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:38:18,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:18,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:38:18,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:38:18,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:38:18,024 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 08:38:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:29,237 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 08:38:29,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:38:29,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 08:38:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:29,296 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 08:38:29,297 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 08:38:29,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:38:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 08:38:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 08:38:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 08:38:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 08:38:29,579 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 144 [2018-11-07 08:38:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:29,580 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 08:38:29,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:38:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 08:38:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 08:38:29,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:29,584 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:38:29,584 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:29,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1110461253, now seen corresponding path program 1 times [2018-11-07 08:38:29,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:29,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:29,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:29,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:29,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:29,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:29,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:38:29,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:29,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:38:29,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:38:29,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:38:29,905 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 08:38:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:38,997 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 08:38:38,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:38:38,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 08:38:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:39,084 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 08:38:39,084 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 08:38:39,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:38:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 08:38:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 08:38:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 08:38:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 08:38:39,532 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 152 [2018-11-07 08:38:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:39,533 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 08:38:39,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:38:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 08:38:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 08:38:39,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:39,541 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:38:39,545 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:39,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1126931720, now seen corresponding path program 1 times [2018-11-07 08:38:39,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:39,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:39,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:39,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:39,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:39,875 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:38:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:40,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:38:40,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:38:40,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:38:40,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:38:40,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:38:40,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:38:40,133 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 08:38:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:38:48,977 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 08:38:48,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:38:48,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-11-07 08:38:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:38:49,066 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 08:38:49,066 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 08:38:49,122 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:38:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 08:38:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 08:38:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 08:38:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 08:38:49,593 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 185 [2018-11-07 08:38:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:38:49,594 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 08:38:49,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:38:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 08:38:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 08:38:49,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:38:49,609 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 08:38:49,610 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:38:49,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1082582744, now seen corresponding path program 1 times [2018-11-07 08:38:49,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:38:49,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:49,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:49,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:38:49,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:38:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 08:38:50,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:38:50,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:38:50,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 08:38:50,290 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2287], [2289], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:38:50,340 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:38:50,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:38:51,052 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:38:51,053 INFO L272 AbstractInterpreter]: Visited 104 different actions 200 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 08:38:51,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:38:51,099 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:38:51,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:38:51,100 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 08:38:51,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:38:51,119 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:38:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:38:51,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:38:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:51,736 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:38:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:38:52,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:38:52,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 08:38:52,518 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:38:52,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 08:38:52,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 08:38:52,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-07 08:38:52,520 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 9 states. [2018-11-07 08:39:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:39:13,884 INFO L93 Difference]: Finished difference Result 66821 states and 106299 transitions. [2018-11-07 08:39:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 08:39:13,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2018-11-07 08:39:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:39:14,194 INFO L225 Difference]: With dead ends: 66821 [2018-11-07 08:39:14,195 INFO L226 Difference]: Without dead ends: 45176 [2018-11-07 08:39:14,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 488 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 08:39:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45176 states. [2018-11-07 08:39:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45176 to 44054. [2018-11-07 08:39:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44054 states. [2018-11-07 08:39:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44054 states to 44054 states and 57504 transitions. [2018-11-07 08:39:15,522 INFO L78 Accepts]: Start accepts. Automaton has 44054 states and 57504 transitions. Word has length 236 [2018-11-07 08:39:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:39:15,522 INFO L480 AbstractCegarLoop]: Abstraction has 44054 states and 57504 transitions. [2018-11-07 08:39:15,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 08:39:15,523 INFO L276 IsEmpty]: Start isEmpty. Operand 44054 states and 57504 transitions. [2018-11-07 08:39:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-07 08:39:15,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:39:15,537 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:15,537 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:39:15,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash 465647125, now seen corresponding path program 1 times [2018-11-07 08:39:15,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:39:15,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:15,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:39:15,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:39:15,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:39:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:39:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 116 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:39:15,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:39:15,965 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:39:15,966 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-07 08:39:15,967 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2287], [2289], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2568], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:39:15,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:39:15,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:39:16,326 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:39:16,326 INFO L272 AbstractInterpreter]: Visited 127 different actions 127 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:39:16,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:39:16,365 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:39:17,031 INFO L227 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 08:39:17,031 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:39:17,402 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-07 08:39:17,403 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:39:17,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:39:17,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:39:17,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:39:17,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:39:17,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:39:17,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:39:17,405 INFO L87 Difference]: Start difference. First operand 44054 states and 57504 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown