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/Problem18_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:08:55,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:08:55,666 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:08:55,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:08:55,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:08:55,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:08:55,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:08:55,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:08:55,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:08:55,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:08:55,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:08:55,697 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:08:55,699 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:08:55,703 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:08:55,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:08:55,705 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:08:55,706 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:08:55,710 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:08:55,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:08:55,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:08:55,722 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:08:55,723 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:08:55,725 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:08:55,725 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:08:55,726 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:08:55,727 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:08:55,727 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:08:55,728 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:08:55,729 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:08:55,730 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:08:55,730 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:08:55,731 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:08:55,731 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:08:55,731 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:08:55,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:08:55,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:08:55,733 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 21:08:55,762 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:08:55,763 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:08:55,764 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:08:55,765 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:08:55,765 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:08:55,765 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:08:55,765 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:08:55,765 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:08:55,766 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:08:55,766 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:08:55,767 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:08:55,767 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:08:55,767 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:08:55,768 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:08:55,768 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:08:55,768 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:08:55,769 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:08:55,769 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:08:55,769 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:08:55,769 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:08:55,769 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:08:55,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:08:55,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:08:55,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:08:55,772 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:08:55,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:08:55,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:08:55,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:08:55,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:08:55,773 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:08:55,773 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:08:55,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:08:55,774 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:08:55,774 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:08:55,774 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:08:55,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:08:55,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:08:55,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:08:55,855 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:08:55,856 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:08:55,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 21:08:55,921 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98d0d05/79bdaad8058d4f18b29449663ce9e718/FLAGa4b1010bb [2018-11-07 21:08:56,742 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:08:56,743 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-11-07 21:08:56,772 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98d0d05/79bdaad8058d4f18b29449663ce9e718/FLAGa4b1010bb [2018-11-07 21:08:56,791 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98d0d05/79bdaad8058d4f18b29449663ce9e718 [2018-11-07 21:08:56,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:08:56,807 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:08:56,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:08:56,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:08:56,812 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:08:56,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:08:56" (1/1) ... [2018-11-07 21:08:56,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:56, skipping insertion in model container [2018-11-07 21:08:56,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:08:56" (1/1) ... [2018-11-07 21:08:56,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:08:56,978 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:08:58,273 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:08:58,278 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:08:58,735 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:08:58,769 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:08:58,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58 WrapperNode [2018-11-07 21:08:58,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:08:58,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:08:58,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:08:58,771 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:08:58,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:08:59,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:08:59,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:08:59,063 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:08:59,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (1/1) ... [2018-11-07 21:08:59,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:08:59,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:08:59,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:08:59,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:08:59,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (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 21:08:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:08:59,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:08:59,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:08:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:08:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:08:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:08:59,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:08:59,330 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:08:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:08:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:08:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:08:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:08:59,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:09:07,364 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:09:07,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:07 BoogieIcfgContainer [2018-11-07 21:09:07,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:09:07,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:09:07,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:09:07,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:09:07,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:08:56" (1/3) ... [2018-11-07 21:09:07,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:07, skipping insertion in model container [2018-11-07 21:09:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:08:58" (2/3) ... [2018-11-07 21:09:07,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:09:07, skipping insertion in model container [2018-11-07 21:09:07,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:09:07" (3/3) ... [2018-11-07 21:09:07,373 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label11_true-unreach-call.c [2018-11-07 21:09:07,383 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:09:07,393 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:09:07,411 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:09:07,458 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:09:07,458 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:09:07,458 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:09:07,459 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:09:07,459 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:09:07,459 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:09:07,459 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:09:07,459 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:09:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:09:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 21:09:07,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:07,511 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:09:07,514 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:07,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:07,521 INFO L82 PathProgramCache]: Analyzing trace with hash 2146476495, now seen corresponding path program 1 times [2018-11-07 21:09:07,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:07,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:07,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:07,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:07,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:07,995 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:09:08,060 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 21:09:08,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:08,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:09:08,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:08,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:09:08,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:09:08,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:09:08,093 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:09:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:14,081 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:09:14,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:09:14,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 21:09:14,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:14,129 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:09:14,129 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:09:14,143 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:09:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:09:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:09:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:09:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 21:09:14,299 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 49 [2018-11-07 21:09:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:14,300 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 21:09:14,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:09:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 21:09:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 21:09:14,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:14,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:14,323 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:14,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:14,323 INFO L82 PathProgramCache]: Analyzing trace with hash -108782427, now seen corresponding path program 1 times [2018-11-07 21:09:14,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:14,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:14,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:14,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:14,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:09:14,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:14,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:09:14,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:14,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:09:14,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:09:14,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:09:14,622 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 21:09:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:23,029 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 21:09:23,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:09:23,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 21:09:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:23,050 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 21:09:23,050 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 21:09:23,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:09:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 21:09:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 21:09:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 21:09:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 21:09:23,145 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 120 [2018-11-07 21:09:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:23,146 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 21:09:23,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:09:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 21:09:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 21:09:23,150 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:23,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:23,151 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:23,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash 579963756, now seen corresponding path program 1 times [2018-11-07 21:09:23,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:23,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:23,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:23,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:23,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:09:23,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:23,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:09:23,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:23,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:09:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:09:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:09:23,381 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 21:09:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:33,889 INFO L93 Difference]: Finished difference Result 11199 states and 19625 transitions. [2018-11-07 21:09:33,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:09:33,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 21:09:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:33,955 INFO L225 Difference]: With dead ends: 11199 [2018-11-07 21:09:33,955 INFO L226 Difference]: Without dead ends: 8280 [2018-11-07 21:09:33,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:09:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-07 21:09:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-07 21:09:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-07 21:09:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12155 transitions. [2018-11-07 21:09:34,255 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12155 transitions. Word has length 125 [2018-11-07 21:09:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:34,255 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12155 transitions. [2018-11-07 21:09:34,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:09:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12155 transitions. [2018-11-07 21:09:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 21:09:34,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:34,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:34,262 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:34,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:34,264 INFO L82 PathProgramCache]: Analyzing trace with hash -699084424, now seen corresponding path program 1 times [2018-11-07 21:09:34,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:34,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:34,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:34,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:34,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:09:34,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:34,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:09:34,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:34,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:09:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:09:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:09:34,509 INFO L87 Difference]: Start difference. First operand 8210 states and 12155 transitions. Second operand 4 states. [2018-11-07 21:09:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:41,878 INFO L93 Difference]: Finished difference Result 30093 states and 48164 transitions. [2018-11-07 21:09:41,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:09:41,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-11-07 21:09:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:42,027 INFO L225 Difference]: With dead ends: 30093 [2018-11-07 21:09:42,028 INFO L226 Difference]: Without dead ends: 21889 [2018-11-07 21:09:42,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:09:42,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21889 states. [2018-11-07 21:09:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21889 to 21887. [2018-11-07 21:09:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21887 states. [2018-11-07 21:09:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21887 states to 21887 states and 32689 transitions. [2018-11-07 21:09:42,788 INFO L78 Accepts]: Start accepts. Automaton has 21887 states and 32689 transitions. Word has length 147 [2018-11-07 21:09:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:42,789 INFO L480 AbstractCegarLoop]: Abstraction has 21887 states and 32689 transitions. [2018-11-07 21:09:42,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:09:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 21887 states and 32689 transitions. [2018-11-07 21:09:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 21:09:42,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:42,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:42,807 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:42,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:42,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2087141983, now seen corresponding path program 1 times [2018-11-07 21:09:42,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:42,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:42,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:42,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:42,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:43,208 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:09:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:09:43,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:09:43,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:09:43,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:43,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:09:43,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:09:43,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:09:43,837 INFO L87 Difference]: Start difference. First operand 21887 states and 32689 transitions. Second operand 6 states. [2018-11-07 21:09:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:09:49,871 INFO L93 Difference]: Finished difference Result 56189 states and 86082 transitions. [2018-11-07 21:09:49,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:09:49,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-07 21:09:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:09:50,053 INFO L225 Difference]: With dead ends: 56189 [2018-11-07 21:09:50,053 INFO L226 Difference]: Without dead ends: 34308 [2018-11-07 21:09:50,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:09:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34308 states. [2018-11-07 21:09:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34308 to 34219. [2018-11-07 21:09:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34219 states. [2018-11-07 21:09:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34219 states to 34219 states and 46601 transitions. [2018-11-07 21:09:51,224 INFO L78 Accepts]: Start accepts. Automaton has 34219 states and 46601 transitions. Word has length 230 [2018-11-07 21:09:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:09:51,227 INFO L480 AbstractCegarLoop]: Abstraction has 34219 states and 46601 transitions. [2018-11-07 21:09:51,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:09:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 34219 states and 46601 transitions. [2018-11-07 21:09:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 21:09:51,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:09:51,244 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:09:51,244 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:09:51,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash 374301254, now seen corresponding path program 1 times [2018-11-07 21:09:51,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:09:51,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:51,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:09:51,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:09:51,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:09:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:09:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:09:51,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:09:51,760 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:09:51,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 21:09:51,764 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1915], [1917], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:09:51,812 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:09:51,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:09:52,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:09:52,411 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:09:52,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:09:52,458 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:09:53,004 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 21:09:53,004 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:09:53,311 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 21:09:53,311 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:09:53,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:09:53,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:09:53,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:09:53,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:09:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:09:53,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:09:53,314 INFO L87 Difference]: Start difference. First operand 34219 states and 46601 transitions. Second operand 7 states. [2018-11-07 21:10:04,432 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:10:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:10:32,168 INFO L93 Difference]: Finished difference Result 69137 states and 93973 transitions. [2018-11-07 21:10:32,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:10:32,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2018-11-07 21:10:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:10:32,314 INFO L225 Difference]: With dead ends: 69137 [2018-11-07 21:10:32,314 INFO L226 Difference]: Without dead ends: 34924 [2018-11-07 21:10:32,432 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 246 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:10:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34924 states. [2018-11-07 21:10:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34924 to 34922. [2018-11-07 21:10:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34922 states. [2018-11-07 21:10:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34922 states to 34922 states and 47316 transitions. [2018-11-07 21:10:33,900 INFO L78 Accepts]: Start accepts. Automaton has 34922 states and 47316 transitions. Word has length 246 [2018-11-07 21:10:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:10:33,901 INFO L480 AbstractCegarLoop]: Abstraction has 34922 states and 47316 transitions. [2018-11-07 21:10:33,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:10:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 34922 states and 47316 transitions. [2018-11-07 21:10:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-07 21:10:33,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:10:33,923 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:33,923 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:10:33,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:10:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 458529416, now seen corresponding path program 1 times [2018-11-07 21:10:33,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:10:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:10:33,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:10:33,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:10:33,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:10:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:10:34,644 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:10:34,859 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:10:35,285 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:10:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 185 proven. 207 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:10:35,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:10:35,803 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:10:35,803 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-07 21:10:35,804 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1915], [1917], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [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], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:10:35,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:10:35,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:10:36,475 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:10:36,475 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:10:36,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:10:36,506 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:10:37,723 INFO L227 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 78.24% of their original sizes. [2018-11-07 21:10:37,723 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:10:38,770 INFO L415 sIntCurrentIteration]: We unified 432 AI predicates to 432 [2018-11-07 21:10:38,770 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:10:38,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:10:38,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:10:38,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:10:38,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:10:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:10:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:10:38,773 INFO L87 Difference]: Start difference. First operand 34922 states and 47316 transitions. Second operand 17 states. [2018-11-07 21:11:08,271 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:11:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:11:57,291 INFO L93 Difference]: Finished difference Result 71366 states and 96247 transitions. [2018-11-07 21:11:57,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 21:11:57,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 433 [2018-11-07 21:11:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:11:57,419 INFO L225 Difference]: With dead ends: 71366 [2018-11-07 21:11:57,419 INFO L226 Difference]: Without dead ends: 35213 [2018-11-07 21:11:57,504 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 442 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2018-11-07 21:11:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35213 states. [2018-11-07 21:11:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35213 to 34922. [2018-11-07 21:11:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34922 states. [2018-11-07 21:11:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34922 states to 34922 states and 47308 transitions. [2018-11-07 21:11:58,138 INFO L78 Accepts]: Start accepts. Automaton has 34922 states and 47308 transitions. Word has length 433 [2018-11-07 21:11:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:11:58,139 INFO L480 AbstractCegarLoop]: Abstraction has 34922 states and 47308 transitions. [2018-11-07 21:11:58,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:11:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 34922 states and 47308 transitions. [2018-11-07 21:11:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2018-11-07 21:11:58,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:11:58,171 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:58,172 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:11:58,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:11:58,172 INFO L82 PathProgramCache]: Analyzing trace with hash 389998319, now seen corresponding path program 1 times [2018-11-07 21:11:58,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:11:58,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:11:58,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:11:58,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:11:58,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:11:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:11:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-07 21:11:59,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:11:59,628 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:11:59,629 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 775 with the following transitions: [2018-11-07 21:11:59,629 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1915], [1917], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [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], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:11:59,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:11:59,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:12:00,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:12:00,542 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:12:00,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:00,548 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:12:01,421 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.72% of their original sizes. [2018-11-07 21:12:01,421 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:12:02,474 INFO L415 sIntCurrentIteration]: We unified 773 AI predicates to 773 [2018-11-07 21:12:02,474 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:12:02,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:12:02,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [6] total 35 [2018-11-07 21:12:02,475 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:02,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:12:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:12:02,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:12:02,477 INFO L87 Difference]: Start difference. First operand 34922 states and 47308 transitions. Second operand 31 states. Received shutdown request... [2018-11-07 21:12:25,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 21:12:25,732 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:12:25,736 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:12:25,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:12:25 BoogieIcfgContainer [2018-11-07 21:12:25,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:12:25,737 INFO L168 Benchmark]: Toolchain (without parser) took 208931.79 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,738 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:12:25,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1962.16 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,741 INFO L168 Benchmark]: Boogie Preprocessor took 192.54 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,742 INFO L168 Benchmark]: RCFGBuilder took 8109.60 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: 511.0 MB). Peak memory consumption was 511.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,743 INFO L168 Benchmark]: TraceAbstraction took 198370.79 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -875.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:12:25,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1962.16 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.1 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.54 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8109.60 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: 511.0 MB). Peak memory consumption was 511.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198370.79 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -875.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (34922states) and FLOYD_HOARE automaton (currently 17 states, 31 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 44 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 198.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 180.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2536 SDtfs, 22099 SDslu, 1273 SDs, 0 SdLazy, 43999 SolverSat, 6136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1515 GetRequests, 1413 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34922occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979822491351727 AbsIntWeakeningRatio, 0.06758620689655172 AbsIntAvgWeakeningVarsNumRemoved, 13.769655172413794 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 480 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2124 NumberOfCodeBlocks, 2124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3180231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 909/1120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown