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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:12:34,677 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:12:34,679 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:12:34,697 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:12:34,698 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:12:34,700 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:12:34,701 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:12:34,704 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:12:34,706 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:12:34,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:12:34,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:12:34,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:12:34,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:12:34,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:12:34,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:12:34,720 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:12:34,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:12:34,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:12:34,735 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:12:34,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:12:34,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:12:34,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:12:34,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:12:34,745 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:12:34,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:12:34,747 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:12:34,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:12:34,748 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:12:34,751 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:12:34,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:12:34,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:12:34,755 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:12:34,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:12:34,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:12:34,757 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:12:34,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:12:34,759 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:12:34,781 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:12:34,781 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:12:34,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:12:34,782 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:12:34,782 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:12:34,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:12:34,783 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:12:34,783 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:12:34,783 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:12:34,783 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:12:34,786 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:12:34,786 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:12:34,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:12:34,787 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:12:34,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:12:34,787 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:12:34,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:12:34,788 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:12:34,788 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:12:34,788 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:12:34,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:12:34,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:12:34,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:12:34,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:12:34,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:12:34,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:12:34,790 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:12:34,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:12:34,790 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:12:34,790 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:12:34,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:12:34,791 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:12:34,791 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:12:34,791 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:12:34,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:12:34,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:12:34,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:12:34,857 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:12:34,857 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:12:34,858 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-11-07 03:12:34,925 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ec5f125/91217bc861f24f218b401b05f2825ac2/FLAGb22f6724c [2018-11-07 03:12:35,789 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:12:35,790 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-11-07 03:12:35,820 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ec5f125/91217bc861f24f218b401b05f2825ac2/FLAGb22f6724c [2018-11-07 03:12:35,837 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ec5f125/91217bc861f24f218b401b05f2825ac2 [2018-11-07 03:12:35,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:12:35,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:12:35,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:35,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:12:35,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:12:35,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:35" (1/1) ... [2018-11-07 03:12:35,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8b3439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:35, skipping insertion in model container [2018-11-07 03:12:35,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:35" (1/1) ... [2018-11-07 03:12:35,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:12:36,029 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:12:37,347 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:37,353 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:12:38,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:38,046 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:12:38,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38 WrapperNode [2018-11-07 03:12:38,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:38,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:38,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:12:38,048 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:12:38,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:38,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:12:38,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:12:38,400 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:12:38,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (1/1) ... [2018-11-07 03:12:38,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:12:38,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:12:38,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:12:38,652 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:12:38,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (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 03:12:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:12:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:12:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:12:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:12:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:12:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:12:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:12:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:12:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:12:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:12:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:12:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:12:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:12:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:12:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:12:47,758 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:12:47,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:12:47 BoogieIcfgContainer [2018-11-07 03:12:47,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:12:47,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:12:47,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:12:47,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:12:47,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:12:35" (1/3) ... [2018-11-07 03:12:47,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da6f322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:12:47, skipping insertion in model container [2018-11-07 03:12:47,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:38" (2/3) ... [2018-11-07 03:12:47,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da6f322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:12:47, skipping insertion in model container [2018-11-07 03:12:47,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:12:47" (3/3) ... [2018-11-07 03:12:47,769 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-11-07 03:12:47,780 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:12:47,795 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:12:47,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:12:47,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:12:47,865 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:12:47,865 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:12:47,865 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:12:47,865 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:12:47,866 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:12:47,866 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:12:47,866 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:12:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:12:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 03:12:48,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:48,059 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] [2018-11-07 03:12:48,062 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:48,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:48,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2139876300, now seen corresponding path program 1 times [2018-11-07 03:12:48,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:48,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:48,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:48,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:48,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:48,547 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:12:48,676 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 03:12:48,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:48,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:12:48,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:48,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:12:48,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:12:48,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:12:48,726 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 03:12:55,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:55,796 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 03:12:55,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:12:55,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 03:12:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:55,851 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 03:12:55,852 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 03:12:55,870 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 03:12:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 03:12:56,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 03:12:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:12:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 03:12:56,059 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-11-07 03:12:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:56,060 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 03:12:56,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:12:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 03:12:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 03:12:56,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:56,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:56,069 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:56,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1482898002, now seen corresponding path program 1 times [2018-11-07 03:12:56,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:56,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:56,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:56,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:56,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:56,528 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:12:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:56,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:56,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:12:56,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:56,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:12:56,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:12:56,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:12:56,584 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 03:13:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:06,515 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 03:13:06,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:06,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 03:13:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:06,540 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 03:13:06,540 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 03:13:06,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:13:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 03:13:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 03:13:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 03:13:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 03:13:06,643 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 114 [2018-11-07 03:13:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:06,644 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 03:13:06,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:13:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 03:13:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 03:13:06,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:06,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:06,649 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:06,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1633492773, now seen corresponding path program 1 times [2018-11-07 03:13:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:06,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:06,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:06,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:06,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:06,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:06,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:06,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:06,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:06,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:06,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:06,886 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 03:13:19,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:19,439 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 03:13:19,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:19,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-11-07 03:13:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:19,492 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 03:13:19,493 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 03:13:19,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:13:19,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 03:13:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 03:13:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 03:13:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 03:13:19,750 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 119 [2018-11-07 03:13:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:19,751 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 03:13:19,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 03:13:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 03:13:19,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:19,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:19,761 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:19,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1525604427, now seen corresponding path program 1 times [2018-11-07 03:13:19,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:19,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:19,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:19,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:19,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:20,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:20,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:20,018 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:20,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:20,019 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 03:13:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:28,977 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 03:13:28,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:28,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 03:13:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:29,061 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 03:13:29,061 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 03:13:29,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:13:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 03:13:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 03:13:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 03:13:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 03:13:29,464 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 127 [2018-11-07 03:13:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:29,465 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 03:13:29,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 03:13:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 03:13:29,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:29,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:29,470 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:29,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash -654123146, now seen corresponding path program 1 times [2018-11-07 03:13:29,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:29,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:29,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:29,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:29,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:29,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:29,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:29,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:29,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:29,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:29,931 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 03:13:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:43,410 INFO L93 Difference]: Finished difference Result 55650 states and 94221 transitions. [2018-11-07 03:13:43,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:13:43,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 03:13:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:43,669 INFO L225 Difference]: With dead ends: 55650 [2018-11-07 03:13:43,669 INFO L226 Difference]: Without dead ends: 41437 [2018-11-07 03:13:43,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:13:43,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41437 states. [2018-11-07 03:13:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41437 to 41216. [2018-11-07 03:13:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41216 states. [2018-11-07 03:13:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41216 states to 41216 states and 61812 transitions. [2018-11-07 03:13:45,071 INFO L78 Accepts]: Start accepts. Automaton has 41216 states and 61812 transitions. Word has length 144 [2018-11-07 03:13:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:45,072 INFO L480 AbstractCegarLoop]: Abstraction has 41216 states and 61812 transitions. [2018-11-07 03:13:45,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 41216 states and 61812 transitions. [2018-11-07 03:13:45,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-07 03:13:45,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:45,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:45,080 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:45,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:45,081 INFO L82 PathProgramCache]: Analyzing trace with hash -271525473, now seen corresponding path program 1 times [2018-11-07 03:13:45,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:45,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:45,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:45,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:45,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:45,386 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:13:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:46,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:46,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:46,135 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:46,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:46,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:46,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:46,137 INFO L87 Difference]: Start difference. First operand 41216 states and 61812 transitions. Second operand 6 states. [2018-11-07 03:13:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:56,438 INFO L93 Difference]: Finished difference Result 101445 states and 161800 transitions. [2018-11-07 03:13:56,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:56,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-11-07 03:13:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:56,683 INFO L225 Difference]: With dead ends: 101445 [2018-11-07 03:13:56,684 INFO L226 Difference]: Without dead ends: 60235 [2018-11-07 03:13:56,860 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 03:13:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60235 states. [2018-11-07 03:13:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60235 to 59929. [2018-11-07 03:13:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59929 states. [2018-11-07 03:13:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59929 states to 59929 states and 84374 transitions. [2018-11-07 03:13:58,132 INFO L78 Accepts]: Start accepts. Automaton has 59929 states and 84374 transitions. Word has length 165 [2018-11-07 03:13:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:58,132 INFO L480 AbstractCegarLoop]: Abstraction has 59929 states and 84374 transitions. [2018-11-07 03:13:58,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 59929 states and 84374 transitions. [2018-11-07 03:13:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 03:13:58,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:58,153 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:13:58,153 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:58,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 708461889, now seen corresponding path program 1 times [2018-11-07 03:13:58,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:58,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:58,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:58,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:58,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:13:58,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:13:58,555 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:13:58,556 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 03:13:58,561 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2087], [2089], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:13:58,660 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:13:58,660 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:14:02,051 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:14:02,281 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:14:02,283 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:14:02,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:14:02,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:14:04,520 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 75.52% of their original sizes. [2018-11-07 03:14:04,520 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:14:04,967 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 03:14:04,967 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:14:04,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:14:04,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 03:14:04,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:14:04,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:14:04,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:14:04,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:14:04,970 INFO L87 Difference]: Start difference. First operand 59929 states and 84374 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown