java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:54:24,073 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:54:24,076 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:54:24,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:54:24,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:54:24,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:54:24,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:54:24,101 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:54:24,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:54:24,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:54:24,115 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:54:24,116 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:54:24,117 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:54:24,118 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:54:24,119 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:54:24,120 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:54:24,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:54:24,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:54:24,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:54:24,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:54:24,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:54:24,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:54:24,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:54:24,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:54:24,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:54:24,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:54:24,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:54:24,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:54:24,136 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:54:24,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:54:24,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:54:24,138 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:54:24,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:54:24,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:54:24,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:54:24,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:54:24,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:54:24,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:54:24,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:54:24,164 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:54:24,164 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:54:24,164 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:54:24,165 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:54:24,165 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:54:24,165 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:54:24,165 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:54:24,165 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:54:24,168 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:54:24,168 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:54:24,169 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:54:24,169 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:54:24,170 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:54:24,170 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:54:24,170 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:54:24,170 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:54:24,170 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:54:24,171 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:54:24,171 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:54:24,171 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:54:24,171 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:54:24,172 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:54:24,173 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:54:24,174 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:54:24,174 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:24,174 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:54:24,174 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:54:24,175 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:54:24,175 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:54:24,175 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:54:24,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:54:24,176 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:54:24,176 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:54:24,176 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:54:24,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:54:24,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:54:24,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:54:24,272 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:54:24,272 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:54:24,273 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-11-07 08:54:24,339 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403412091/383a1ee958c5459881985b3b8ad896ad/FLAGf9360eea2 [2018-11-07 08:54:25,138 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:54:25,140 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-11-07 08:54:25,182 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403412091/383a1ee958c5459881985b3b8ad896ad/FLAGf9360eea2 [2018-11-07 08:54:25,201 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403412091/383a1ee958c5459881985b3b8ad896ad [2018-11-07 08:54:25,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:54:25,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:54:25,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:25,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:54:25,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:54:25,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:25" (1/1) ... [2018-11-07 08:54:25,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771982f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:25, skipping insertion in model container [2018-11-07 08:54:25,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:25" (1/1) ... [2018-11-07 08:54:25,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:54:25,428 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:54:26,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:26,961 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:54:27,669 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:27,706 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:54:27,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27 WrapperNode [2018-11-07 08:54:27,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:27,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:27,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:54:27,708 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:54:27,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:28,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:54:28,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:54:28,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:54:28,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... [2018-11-07 08:54:28,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:54:28,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:54:28,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:54:28,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:54:28,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:54:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:54:28,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:54:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:54:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:54:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:54:28,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:54:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:54:28,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:54:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:54:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:54:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:54:28,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:54:28,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:54:28,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:54:39,500 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:54:39,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:39 BoogieIcfgContainer [2018-11-07 08:54:39,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:54:39,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:54:39,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:54:39,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:54:39,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:25" (1/3) ... [2018-11-07 08:54:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220aaaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:39, skipping insertion in model container [2018-11-07 08:54:39,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27" (2/3) ... [2018-11-07 08:54:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220aaaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:39, skipping insertion in model container [2018-11-07 08:54:39,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:39" (3/3) ... [2018-11-07 08:54:39,509 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50_true-unreach-call.c [2018-11-07 08:54:39,519 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:54:39,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:54:39,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:54:39,591 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:54:39,592 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:54:39,592 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:54:39,592 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:54:39,592 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:54:39,592 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:54:39,592 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:54:39,593 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:54:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:54:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 08:54:39,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:39,648 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:54:39,651 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:39,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash -166168757, now seen corresponding path program 1 times [2018-11-07 08:54:39,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:39,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:39,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:39,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:39,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:40,270 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:54:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:40,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:40,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:54:40,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:40,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:54:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:54:40,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:54:40,458 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:54:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:54:49,594 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 08:54:49,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:54:49,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 08:54:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:54:49,632 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 08:54:49,632 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 08:54:49,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:54:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 08:54:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 08:54:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 08:54:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 08:54:49,834 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 69 [2018-11-07 08:54:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:54:49,835 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 08:54:49,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:54:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 08:54:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 08:54:49,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:49,845 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:54:49,845 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:49,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:49,846 INFO L82 PathProgramCache]: Analyzing trace with hash -840650406, now seen corresponding path program 1 times [2018-11-07 08:54:49,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:49,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:49,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:49,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:49,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:50,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:50,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:54:50,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:50,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:54:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:54:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:54:50,154 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 08:55:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:04,598 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-07 08:55:04,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:04,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-11-07 08:55:04,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:04,627 INFO L225 Difference]: With dead ends: 5734 [2018-11-07 08:55:04,627 INFO L226 Difference]: Without dead ends: 3766 [2018-11-07 08:55:04,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:55:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-07 08:55:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-07 08:55:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-07 08:55:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-07 08:55:04,746 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 145 [2018-11-07 08:55:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:04,747 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-07 08:55:04,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:55:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-07 08:55:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 08:55:04,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:04,754 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:55:04,754 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:04,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1657892938, now seen corresponding path program 1 times [2018-11-07 08:55:04,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:04,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:04,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:04,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:04,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:05,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:05,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:55:05,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:05,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:55:05,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:55:05,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:55:05,036 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-07 08:55:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:22,703 INFO L93 Difference]: Finished difference Result 13643 states and 21723 transitions. [2018-11-07 08:55:22,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:55:22,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-11-07 08:55:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:22,774 INFO L225 Difference]: With dead ends: 13643 [2018-11-07 08:55:22,774 INFO L226 Difference]: Without dead ends: 9968 [2018-11-07 08:55:22,805 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:55:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2018-11-07 08:55:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9780. [2018-11-07 08:55:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9780 states. [2018-11-07 08:55:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9780 states to 9780 states and 14477 transitions. [2018-11-07 08:55:23,158 INFO L78 Accepts]: Start accepts. Automaton has 9780 states and 14477 transitions. Word has length 159 [2018-11-07 08:55:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:23,158 INFO L480 AbstractCegarLoop]: Abstraction has 9780 states and 14477 transitions. [2018-11-07 08:55:23,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:55:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states and 14477 transitions. [2018-11-07 08:55:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 08:55:23,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:23,168 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:55:23,169 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:23,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:23,173 INFO L82 PathProgramCache]: Analyzing trace with hash -437242214, now seen corresponding path program 1 times [2018-11-07 08:55:23,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:23,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:23,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:23,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:23,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:23,529 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:23,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:23,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:23,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:23,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:23,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:23,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:23,661 INFO L87 Difference]: Start difference. First operand 9780 states and 14477 transitions. Second operand 6 states. [2018-11-07 08:55:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:35,802 INFO L93 Difference]: Finished difference Result 34111 states and 53588 transitions. [2018-11-07 08:55:35,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:35,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-11-07 08:55:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:35,924 INFO L225 Difference]: With dead ends: 34111 [2018-11-07 08:55:35,924 INFO L226 Difference]: Without dead ends: 24337 [2018-11-07 08:55:35,995 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 08:55:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24337 states. [2018-11-07 08:55:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24337 to 24111. [2018-11-07 08:55:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24111 states. [2018-11-07 08:55:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24111 states to 24111 states and 33933 transitions. [2018-11-07 08:55:36,603 INFO L78 Accepts]: Start accepts. Automaton has 24111 states and 33933 transitions. Word has length 177 [2018-11-07 08:55:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:36,604 INFO L480 AbstractCegarLoop]: Abstraction has 24111 states and 33933 transitions. [2018-11-07 08:55:36,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 24111 states and 33933 transitions. [2018-11-07 08:55:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-11-07 08:55:36,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:36,628 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:55:36,628 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:36,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash -912341493, now seen corresponding path program 1 times [2018-11-07 08:55:36,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:36,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:36,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:36,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:36,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:36,911 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:55:37,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:55:37,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:55:37,128 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-11-07 08:55:37,131 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3079], [3081], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:55:37,186 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:55:37,186 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:55:37,804 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:55:37,806 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:55:37,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:37,850 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:55:38,584 INFO L227 lantSequenceWeakener]: Weakened 270 states. On average, predicates are now at 71.53% of their original sizes. [2018-11-07 08:55:38,585 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:55:38,861 INFO L415 sIntCurrentIteration]: We unified 282 AI predicates to 282 [2018-11-07 08:55:38,862 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:55:38,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:55:38,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:55:38,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:38,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:38,865 INFO L87 Difference]: Start difference. First operand 24111 states and 33933 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown