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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:45:13,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:45:13,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:45:13,712 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:45:13,712 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:45:13,713 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:45:13,714 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:45:13,716 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:45:13,718 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:45:13,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:45:13,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:45:13,720 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:45:13,721 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:45:13,722 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:45:13,724 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:45:13,725 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:45:13,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:45:13,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:45:13,736 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:45:13,738 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:45:13,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:45:13,746 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:45:13,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:45:13,748 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:45:13,751 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:45:13,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:45:13,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:45:13,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:45:13,754 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:45:13,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:45:13,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:45:13,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:45:13,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:45:13,760 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:45:13,760 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:45:13,761 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:45:13,761 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.epf [2018-11-07 14:45:13,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:45:13,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:45:13,793 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:45:13,793 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:45:13,793 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:45:13,793 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:45:13,794 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:45:13,794 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:45:13,794 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:45:13,794 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:45:13,795 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:45:13,795 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:45:13,795 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:45:13,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:45:13,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:45:13,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:45:13,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:45:13,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:45:13,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:45:13,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:45:13,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:45:13,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:45:13,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:45:13,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:45:13,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:45:13,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:45:13,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:45:13,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:45:13,801 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:45:13,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:45:13,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:45:13,801 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:45:13,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:45:13,802 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:45:13,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:45:13,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:45:13,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:45:13,865 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:45:13,865 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:45:13,866 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 14:45:13,936 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350832e4c/28d37cb299164f20832c64d9bc276223/FLAGb041a894e [2018-11-07 14:45:14,650 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:45:14,651 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 14:45:14,683 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350832e4c/28d37cb299164f20832c64d9bc276223/FLAGb041a894e [2018-11-07 14:45:14,704 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350832e4c/28d37cb299164f20832c64d9bc276223 [2018-11-07 14:45:14,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:45:14,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:45:14,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:45:14,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:45:14,725 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:45:14,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:14" (1/1) ... [2018-11-07 14:45:14,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e2595a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:14, skipping insertion in model container [2018-11-07 14:45:14,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:14" (1/1) ... [2018-11-07 14:45:14,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:45:14,912 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:45:16,174 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:45:16,179 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:45:16,869 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:45:16,900 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:45:16,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16 WrapperNode [2018-11-07 14:45:16,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:45:16,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:45:16,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:45:16,902 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:45:16,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:45:17,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:45:17,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:45:17,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:45:17,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (1/1) ... [2018-11-07 14:45:17,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:45:17,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:45:17,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:45:17,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:45:17,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (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 14:45:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:45:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:45:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:45:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:45:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:45:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:45:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:45:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:45:17,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:45:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:45:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:45:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:45:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:45:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:45:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:45:27,036 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:45:27,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:27 BoogieIcfgContainer [2018-11-07 14:45:27,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:45:27,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:45:27,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:45:27,041 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:45:27,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:14" (1/3) ... [2018-11-07 14:45:27,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c20431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:27, skipping insertion in model container [2018-11-07 14:45:27,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:16" (2/3) ... [2018-11-07 14:45:27,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c20431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:27, skipping insertion in model container [2018-11-07 14:45:27,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:27" (3/3) ... [2018-11-07 14:45:27,044 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-11-07 14:45:27,054 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:45:27,063 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:45:27,081 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:45:27,127 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:45:27,128 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:45:27,128 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:45:27,128 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:45:27,128 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:45:27,128 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:45:27,128 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:45:27,128 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:45:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:45:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 14:45:27,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:27,178 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:45:27,180 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:27,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-11-07 14:45:27,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:27,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:27,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:27,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:27,711 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:45:27,814 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 14:45:27,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:27,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:45:27,817 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:27,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:45:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:45:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:45:27,842 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 14:45:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:34,748 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 14:45:34,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:45:34,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 14:45:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:34,783 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 14:45:34,783 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 14:45:34,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:45:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 14:45:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 14:45:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 14:45:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 14:45:34,949 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-11-07 14:45:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:34,950 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 14:45:34,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:45:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 14:45:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 14:45:34,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:34,958 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:45:34,959 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:34,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:34,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-11-07 14:45:34,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:34,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:34,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:34,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:34,962 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:35,276 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:45:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:35,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:35,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:45:35,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:35,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:45:35,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:45:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:45:35,347 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 14:45:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:48,511 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 14:45:48,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:45:48,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 14:45:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:48,549 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 14:45:48,550 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 14:45:48,559 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 14:45:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 14:45:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 14:45:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 14:45:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 14:45:48,705 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-11-07 14:45:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:48,705 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 14:45:48,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:45:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 14:45:48,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 14:45:48,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:48,713 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:45:48,713 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:48,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:48,714 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-11-07 14:45:48,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:48,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:48,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:48,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:48,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:48,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:48,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:45:48,936 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:48,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:45:48,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:45:48,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:45:48,938 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 14:45:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:56,524 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 14:45:56,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 14:45:56,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 14:45:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:56,577 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 14:45:56,577 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 14:45:56,592 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:45:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 14:45:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 14:45:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 14:45:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 14:45:56,850 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 130 [2018-11-07 14:45:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:56,851 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 14:45:56,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:45:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 14:45:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 14:45:56,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:56,855 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:45:56,855 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:56,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-11-07 14:45:56,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:56,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:56,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:56,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:56,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:57,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:57,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:45:57,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:57,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:45:57,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:45:57,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:45:57,356 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 14:46:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:46:12,373 INFO L93 Difference]: Finished difference Result 38604 states and 63778 transitions. [2018-11-07 14:46:12,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:46:12,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 14:46:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:46:12,524 INFO L225 Difference]: With dead ends: 38604 [2018-11-07 14:46:12,525 INFO L226 Difference]: Without dead ends: 29083 [2018-11-07 14:46:12,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:46:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29083 states. [2018-11-07 14:46:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29083 to 28884. [2018-11-07 14:46:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28884 states. [2018-11-07 14:46:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28884 states to 28884 states and 42392 transitions. [2018-11-07 14:46:13,434 INFO L78 Accepts]: Start accepts. Automaton has 28884 states and 42392 transitions. Word has length 153 [2018-11-07 14:46:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:46:13,435 INFO L480 AbstractCegarLoop]: Abstraction has 28884 states and 42392 transitions. [2018-11-07 14:46:13,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:46:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 28884 states and 42392 transitions. [2018-11-07 14:46:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 14:46:13,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:46:13,440 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:46:13,440 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:46:13,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-11-07 14:46:13,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:46:13,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:13,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:46:13,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:13,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:46:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:46:13,731 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:46:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:46:14,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:46:14,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:46:14,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:46:14,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:46:14,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:46:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:46:14,114 INFO L87 Difference]: Start difference. First operand 28884 states and 42392 transitions. Second operand 6 states. [2018-11-07 14:46:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:46:24,251 INFO L93 Difference]: Finished difference Result 77283 states and 121529 transitions. [2018-11-07 14:46:24,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:46:24,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 14:46:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:46:24,453 INFO L225 Difference]: With dead ends: 77283 [2018-11-07 14:46:24,454 INFO L226 Difference]: Without dead ends: 48405 [2018-11-07 14:46:24,818 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:46:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48405 states. [2018-11-07 14:46:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48405 to 48175. [2018-11-07 14:46:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48175 states. [2018-11-07 14:46:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48175 states to 48175 states and 68300 transitions. [2018-11-07 14:46:25,814 INFO L78 Accepts]: Start accepts. Automaton has 48175 states and 68300 transitions. Word has length 174 [2018-11-07 14:46:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:46:25,814 INFO L480 AbstractCegarLoop]: Abstraction has 48175 states and 68300 transitions. [2018-11-07 14:46:25,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:46:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 48175 states and 68300 transitions. [2018-11-07 14:46:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 14:46:25,826 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:46:25,826 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:46:25,826 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:46:25,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:25,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-11-07 14:46:25,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:46:25,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:25,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:46:25,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:25,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:46:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:46:26,091 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:46:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:46:26,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:46:26,230 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:46:26,231 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 14:46:26,233 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2159], [2161], [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], [2397], [2401], [2404], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:46:26,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:46:26,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:46:26,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:46:26,947 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:46:26,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:26,988 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:46:27,554 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.47% of their original sizes. [2018-11-07 14:46:27,554 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:46:27,915 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 14:46:27,915 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:46:27,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:46:27,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 14:46:27,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:46:27,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 14:46:27,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 14:46:27,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:46:27,918 INFO L87 Difference]: Start difference. First operand 48175 states and 68300 transitions. Second operand 8 states. [2018-11-07 14:46:34,937 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown