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/Problem03_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:21:18,740 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:21:18,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:21:18,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:21:18,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:21:18,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:21:18,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:21:18,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:21:18,760 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:21:18,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:21:18,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:21:18,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:21:18,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:21:18,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:21:18,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:21:18,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:21:18,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:21:18,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:21:18,771 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:21:18,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:21:18,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:21:18,775 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:21:18,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:21:18,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:21:18,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:21:18,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:21:18,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:21:18,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:21:18,786 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:21:18,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:21:18,787 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:21:18,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:21:18,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:21:18,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:21:18,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:21:18,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:21:18,792 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 [2018-11-12 17:21:18,825 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:21:18,825 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:21:18,826 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:21:18,826 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:21:18,826 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:21:18,826 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:21:18,827 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:21:18,827 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:21:18,827 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:21:18,828 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:21:18,828 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:21:18,828 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:21:18,828 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:21:18,829 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:21:18,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:21:18,829 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:21:18,829 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:21:18,829 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:21:18,830 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:21:18,830 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:21:18,830 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:21:18,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:21:18,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:21:18,831 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:21:18,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:21:18,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:21:18,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:21:18,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:21:18,831 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:21:18,833 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:21:18,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:21:18,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:21:18,834 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:21:18,834 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:21:18,834 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:21:18,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:21:18,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:21:18,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:21:18,918 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:21:18,919 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:21:18,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-11-12 17:21:18,978 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62365058/24da89b0f4b6403786e93dd487983538/FLAG633998ab0 [2018-11-12 17:21:19,643 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:21:19,644 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-11-12 17:21:19,661 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62365058/24da89b0f4b6403786e93dd487983538/FLAG633998ab0 [2018-11-12 17:21:19,677 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62365058/24da89b0f4b6403786e93dd487983538 [2018-11-12 17:21:19,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:21:19,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:21:19,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:21:19,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:21:19,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:21:19,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:21:19" (1/1) ... [2018-11-12 17:21:19,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f8be60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:19, skipping insertion in model container [2018-11-12 17:21:19,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:21:19" (1/1) ... [2018-11-12 17:21:19,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:21:19,814 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:21:20,644 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:21:20,650 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:21:20,882 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:21:20,908 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:21:20,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20 WrapperNode [2018-11-12 17:21:20,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:21:20,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:21:20,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:21:20,910 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:21:21,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:21:21,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:21:21,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:21:21,112 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:21:21,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (1/1) ... [2018-11-12 17:21:21,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:21:21,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:21:21,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:21:21,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:21:21,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (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 [2018-11-12 17:21:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:21:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:21:21,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:21:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:21:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:21:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:21:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:21:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:21:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:21:26,381 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:21:26,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:21:26 BoogieIcfgContainer [2018-11-12 17:21:26,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:21:26,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:21:26,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:21:26,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:21:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:21:19" (1/3) ... [2018-11-12 17:21:26,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ecaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:21:26, skipping insertion in model container [2018-11-12 17:21:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:21:20" (2/3) ... [2018-11-12 17:21:26,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1ecaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:21:26, skipping insertion in model container [2018-11-12 17:21:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:21:26" (3/3) ... [2018-11-12 17:21:26,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label30_true-unreach-call.c [2018-11-12 17:21:26,402 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:21:26,412 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:21:26,430 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:21:26,471 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:21:26,472 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:21:26,472 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:21:26,472 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:21:26,472 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:21:26,472 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:21:26,473 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:21:26,473 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:21:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:21:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-12 17:21:26,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:26,524 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:21:26,526 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:26,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:26,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2108174465, now seen corresponding path program 1 times [2018-11-12 17:21:26,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:26,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:26,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:26,597 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:27,581 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:21:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:27,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:21:27,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:21:27,869 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:27,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:21:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:21:27,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:21:27,892 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:21:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:21:30,088 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-12 17:21:30,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:21:30,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-11-12 17:21:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:21:30,115 INFO L225 Difference]: With dead ends: 838 [2018-11-12 17:21:30,115 INFO L226 Difference]: Without dead ends: 524 [2018-11-12 17:21:30,123 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 [2018-11-12 17:21:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-12 17:21:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-12 17:21:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-12 17:21:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-12 17:21:30,223 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 182 [2018-11-12 17:21:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:30,225 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-12 17:21:30,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:21:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-12 17:21:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-12 17:21:30,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:30,242 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:21:30,242 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:30,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1443247960, now seen corresponding path program 1 times [2018-11-12 17:21:30,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:30,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:30,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:30,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:30,248 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:30,594 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:21:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:30,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:21:30,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:21:30,698 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:30,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:21:30,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:21:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:21:30,701 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-12 17:21:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:21:34,379 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-12 17:21:34,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:21:34,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-12 17:21:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:21:34,397 INFO L225 Difference]: With dead ends: 1581 [2018-11-12 17:21:34,397 INFO L226 Difference]: Without dead ends: 1065 [2018-11-12 17:21:34,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:21:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-12 17:21:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-12 17:21:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-12 17:21:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-12 17:21:34,471 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 192 [2018-11-12 17:21:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:34,471 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-12 17:21:34,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:21:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-12 17:21:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-12 17:21:34,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:34,477 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:21:34,477 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:34,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:34,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1778495237, now seen corresponding path program 1 times [2018-11-12 17:21:34,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:34,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:34,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:34,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:34,480 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:34,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:21:34,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:21:34,801 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:34,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:21:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:21:34,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:21:34,802 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-12 17:21:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:21:37,753 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-12 17:21:37,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:21:37,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-11-12 17:21:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:21:37,772 INFO L225 Difference]: With dead ends: 2887 [2018-11-12 17:21:37,773 INFO L226 Difference]: Without dead ends: 1870 [2018-11-12 17:21:37,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:21:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-12 17:21:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-12 17:21:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-12 17:21:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-12 17:21:37,858 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 195 [2018-11-12 17:21:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:37,859 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-12 17:21:37,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:21:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-12 17:21:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-12 17:21:37,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:37,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:21:37,869 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:37,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324138, now seen corresponding path program 1 times [2018-11-12 17:21:37,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:37,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:37,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:37,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:37,871 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:38,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:21:38,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:21:38,233 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:38,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:21:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:21:38,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:21:38,234 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-12 17:21:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:21:40,053 INFO L93 Difference]: Finished difference Result 5425 states and 9196 transitions. [2018-11-12 17:21:40,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:21:40,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-11-12 17:21:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:21:40,083 INFO L225 Difference]: With dead ends: 5425 [2018-11-12 17:21:40,083 INFO L226 Difference]: Without dead ends: 3566 [2018-11-12 17:21:40,092 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:21:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-11-12 17:21:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3544. [2018-11-12 17:21:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2018-11-12 17:21:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5788 transitions. [2018-11-12 17:21:40,211 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5788 transitions. Word has length 215 [2018-11-12 17:21:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:40,212 INFO L480 AbstractCegarLoop]: Abstraction has 3544 states and 5788 transitions. [2018-11-12 17:21:40,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:21:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5788 transitions. [2018-11-12 17:21:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-12 17:21:40,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:40,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:21:40,230 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:40,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:40,232 INFO L82 PathProgramCache]: Analyzing trace with hash -647167813, now seen corresponding path program 1 times [2018-11-12 17:21:40,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:40,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:40,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:40,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:40,233 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:40,489 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:21:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:40,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:21:40,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:21:40,545 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:40,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:21:40,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:21:40,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:21:40,546 INFO L87 Difference]: Start difference. First operand 3544 states and 5788 transitions. Second operand 6 states. [2018-11-12 17:21:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:21:42,868 INFO L93 Difference]: Finished difference Result 7596 states and 12544 transitions. [2018-11-12 17:21:42,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:21:42,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-11-12 17:21:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:21:42,893 INFO L225 Difference]: With dead ends: 7596 [2018-11-12 17:21:42,893 INFO L226 Difference]: Without dead ends: 4058 [2018-11-12 17:21:42,909 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 [2018-11-12 17:21:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2018-11-12 17:21:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3727. [2018-11-12 17:21:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-11-12 17:21:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5669 transitions. [2018-11-12 17:21:43,040 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5669 transitions. Word has length 241 [2018-11-12 17:21:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:43,040 INFO L480 AbstractCegarLoop]: Abstraction has 3727 states and 5669 transitions. [2018-11-12 17:21:43,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:21:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5669 transitions. [2018-11-12 17:21:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-12 17:21:43,055 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:43,056 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:21:43,056 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:43,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash 427925431, now seen corresponding path program 1 times [2018-11-12 17:21:43,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:43,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:43,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:43,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:43,058 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:21:43,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:21:43,596 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:21:43,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-11-12 17:21:43,599 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:21:43,669 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:21:43,670 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:21:45,365 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:21:45,367 INFO L272 AbstractInterpreter]: Visited 183 different actions 183 times. Never merged. Never widened. Performed 3252 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3252 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 17:21:45,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:45,394 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:21:46,890 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 72.31% of their original sizes. [2018-11-12 17:21:46,891 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:21:47,906 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-11-12 17:21:47,906 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:21:47,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:21:47,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-12 17:21:47,908 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:21:47,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:21:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:21:47,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:21:47,910 INFO L87 Difference]: Start difference. First operand 3727 states and 5669 transitions. Second operand 16 states. [2018-11-12 17:22:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:22:41,999 INFO L93 Difference]: Finished difference Result 7658 states and 11659 transitions. [2018-11-12 17:22:41,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:22:41,999 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 254 [2018-11-12 17:22:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:22:42,024 INFO L225 Difference]: With dead ends: 7658 [2018-11-12 17:22:42,025 INFO L226 Difference]: Without dead ends: 3937 [2018-11-12 17:22:42,043 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-11-12 17:22:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2018-11-12 17:22:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3935. [2018-11-12 17:22:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3935 states. [2018-11-12 17:22:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 5887 transitions. [2018-11-12 17:22:42,152 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 5887 transitions. Word has length 254 [2018-11-12 17:22:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:22:42,152 INFO L480 AbstractCegarLoop]: Abstraction has 3935 states and 5887 transitions. [2018-11-12 17:22:42,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:22:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 5887 transitions. [2018-11-12 17:22:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-12 17:22:42,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:22:42,167 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:22:42,168 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:22:42,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:22:42,168 INFO L82 PathProgramCache]: Analyzing trace with hash -837547636, now seen corresponding path program 1 times [2018-11-12 17:22:42,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:22:42,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:22:42,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:22:42,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:22:42,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:22:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:22:42,777 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 17:22:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:22:43,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:22:43,024 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:22:43,024 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-12 17:22:43,025 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:22:43,039 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:22:43,039 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:22:47,066 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:22:47,066 INFO L272 AbstractInterpreter]: Visited 186 different actions 368 times. Merged at 5 different actions 7 times. Never widened. Performed 11578 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11578 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:22:47,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:22:47,103 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:22:48,918 INFO L227 lantSequenceWeakener]: Weakened 260 states. On average, predicates are now at 72.18% of their original sizes. [2018-11-12 17:22:48,918 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:22:49,502 INFO L415 sIntCurrentIteration]: We unified 262 AI predicates to 262 [2018-11-12 17:22:49,502 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:22:49,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:22:49,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 17:22:49,503 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:22:49,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 17:22:49,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 17:22:49,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:22:49,504 INFO L87 Difference]: Start difference. First operand 3935 states and 5887 transitions. Second operand 17 states. [2018-11-12 17:23:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:23:55,462 INFO L93 Difference]: Finished difference Result 11108 states and 17111 transitions. [2018-11-12 17:23:55,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:23:55,462 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 263 [2018-11-12 17:23:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:23:55,493 INFO L225 Difference]: With dead ends: 11108 [2018-11-12 17:23:55,493 INFO L226 Difference]: Without dead ends: 6967 [2018-11-12 17:23:55,508 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-11-12 17:23:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6967 states. [2018-11-12 17:23:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6967 to 6913. [2018-11-12 17:23:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6913 states. [2018-11-12 17:23:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 9377 transitions. [2018-11-12 17:23:55,698 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 9377 transitions. Word has length 263 [2018-11-12 17:23:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:23:55,699 INFO L480 AbstractCegarLoop]: Abstraction has 6913 states and 9377 transitions. [2018-11-12 17:23:55,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 17:23:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 9377 transitions. [2018-11-12 17:23:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-12 17:23:55,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:23:55,722 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 17:23:55,722 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:23:55,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:23:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1683768024, now seen corresponding path program 1 times [2018-11-12 17:23:55,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:23:55,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:23:55,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:23:55,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:23:55,724 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:23:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:23:56,646 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-12 17:23:56,927 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:23:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 102 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:23:57,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:23:57,106 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:23:57,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-12 17:23:57,107 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:23:57,115 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:23:57,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:23:58,302 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:23:58,302 INFO L272 AbstractInterpreter]: Visited 187 different actions 368 times. Merged at 5 different actions 5 times. Never widened. Performed 8273 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8273 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:23:58,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:23:58,311 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:23:59,921 INFO L227 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 78.66% of their original sizes. [2018-11-12 17:23:59,921 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:24:02,126 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-12 17:24:02,127 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:24:02,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:24:02,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [10] total 32 [2018-11-12 17:24:02,128 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:24:02,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 17:24:02,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 17:24:02,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-11-12 17:24:02,129 INFO L87 Difference]: Start difference. First operand 6913 states and 9377 transitions. Second operand 24 states. Received shutdown request... [2018-11-12 17:25:16,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 17:25:16,433 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:25:16,439 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:25:16,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:25:16 BoogieIcfgContainer [2018-11-12 17:25:16,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:25:16,441 INFO L168 Benchmark]: Toolchain (without parser) took 236751.57 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 17:25:16,442 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:25:16,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1218.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:25:16,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:25:16,444 INFO L168 Benchmark]: Boogie Preprocessor took 174.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:25:16,445 INFO L168 Benchmark]: RCFGBuilder took 5095.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.1 MB). Peak memory consumption was 271.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:25:16,445 INFO L168 Benchmark]: TraceAbstraction took 230056.42 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -533.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 17:25:16,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1218.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5095.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 271.1 MB). Peak memory consumption was 271.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230056.42 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -533.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1560]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1560). Cancelled while BasicCegarLoop was constructing difference of abstraction (6913states) and FLOYD_HOARE automaton (currently 19 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (6687 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 207.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2392 SDtfs, 6617 SDslu, 3091 SDs, 0 SdLazy, 14896 SolverSat, 1438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 833 GetRequests, 729 SyntacticMatches, 16 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6913occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9991039143229105 AbsIntWeakeningRatio, 0.24358974358974358 AbsIntAvgWeakeningVarsNumRemoved, 52.62179487179487 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 458 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1808 NumberOfCodeBlocks, 1808 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1800 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 377/411 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown