java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:04:43,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:04:43,256 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:04:43,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:04:43,271 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:04:43,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:04:43,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:04:43,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:04:43,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:04:43,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:04:43,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:04:43,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:04:43,279 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:04:43,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:04:43,281 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:04:43,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:04:43,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:04:43,285 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:04:43,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:04:43,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:04:43,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:04:43,291 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:04:43,293 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:04:43,293 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:04:43,294 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:04:43,294 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:04:43,295 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:04:43,296 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:04:43,297 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:04:43,298 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:04:43,298 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:04:43,299 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:04:43,299 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:04:43,299 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:04:43,300 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:04:43,301 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:04:43,301 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:04:43,331 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:04:43,331 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:04:43,333 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:04:43,333 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:04:43,334 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:04:43,334 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:04:43,334 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:04:43,334 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:04:43,334 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:04:43,335 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:04:43,335 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:04:43,335 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:04:43,336 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:04:43,336 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:04:43,336 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:04:43,336 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:04:43,336 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:04:43,337 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:04:43,337 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:04:43,337 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:04:43,337 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:04:43,337 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:04:43,338 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:04:43,338 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:04:43,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:04:43,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:04:43,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:04:43,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:04:43,339 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:04:43,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:04:43,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:04:43,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:04:43,339 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:04:43,340 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:04:43,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:04:43,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:04:43,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:04:43,405 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:04:43,406 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:04:43,406 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-11-07 03:04:43,471 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3224281ce/9fde5c064d5c4e31805007f260784a65/FLAG3c226aacc [2018-11-07 03:04:44,246 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:04:44,247 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-11-07 03:04:44,278 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3224281ce/9fde5c064d5c4e31805007f260784a65/FLAG3c226aacc [2018-11-07 03:04:44,294 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3224281ce/9fde5c064d5c4e31805007f260784a65 [2018-11-07 03:04:44,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:04:44,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:04:44,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:04:44,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:04:44,314 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:04:44,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:04:44" (1/1) ... [2018-11-07 03:04:44,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e77fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:44, skipping insertion in model container [2018-11-07 03:04:44,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:04:44" (1/1) ... [2018-11-07 03:04:44,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:04:44,469 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:04:45,717 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:04:45,722 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:04:46,355 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:04:46,391 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:04:46,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46 WrapperNode [2018-11-07 03:04:46,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:04:46,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:04:46,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:04:46,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:04:46,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:04:46,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:04:46,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:04:46,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:04:46,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:46,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:47,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... [2018-11-07 03:04:47,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:04:47,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:04:47,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:04:47,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:04:47,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:04:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:04:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:04:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:04:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:04:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:04:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:04:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:04:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:04:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:04:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:04:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:04:47,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:04:47,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:04:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:04:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:04:56,423 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:04:56,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:04:56 BoogieIcfgContainer [2018-11-07 03:04:56,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:04:56,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:04:56,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:04:56,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:04:56,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:04:44" (1/3) ... [2018-11-07 03:04:56,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dba3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:04:56, skipping insertion in model container [2018-11-07 03:04:56,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:46" (2/3) ... [2018-11-07 03:04:56,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dba3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:04:56, skipping insertion in model container [2018-11-07 03:04:56,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:04:56" (3/3) ... [2018-11-07 03:04:56,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04_true-unreach-call.c [2018-11-07 03:04:56,442 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:04:56,450 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:04:56,465 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:04:56,510 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:04:56,510 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:04:56,510 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:04:56,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:04:56,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:04:56,511 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:04:56,511 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:04:56,511 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:04:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:04:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 03:04:56,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:04:56,678 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] [2018-11-07 03:04:56,681 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:04:56,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:04:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash -629755477, now seen corresponding path program 1 times [2018-11-07 03:04:56,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:04:56,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:04:56,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:04:56,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:04:56,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:04:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:04:57,238 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:04:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:04:57,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:04:57,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:04:57,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:04:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:04:57,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:04:57,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:04:57,437 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 03:05:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:05:04,709 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 03:05:04,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:05:04,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 03:05:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:05:04,759 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 03:05:04,760 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 03:05:04,777 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 03:05:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 03:05:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 03:05:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:05:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 03:05:04,992 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 67 [2018-11-07 03:05:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:05:04,993 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 03:05:04,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:05:04,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 03:05:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 03:05:05,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:05:05,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:05:05,009 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:05:05,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:05:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1436302644, now seen corresponding path program 1 times [2018-11-07 03:05:05,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:05:05,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:05,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:05:05,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:05,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:05:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:05:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:05:05,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:05:05,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:05:05,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:05:05,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:05:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:05:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:05:05,430 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 03:05:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:05:18,130 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 03:05:18,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:05:18,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 03:05:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:05:18,175 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 03:05:18,175 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 03:05:18,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:05:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 03:05:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 03:05:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 03:05:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 03:05:18,328 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 145 [2018-11-07 03:05:18,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:05:18,329 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 03:05:18,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:05:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 03:05:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 03:05:18,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:05:18,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:05:18,335 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:05:18,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:05:18,335 INFO L82 PathProgramCache]: Analyzing trace with hash -659539728, now seen corresponding path program 1 times [2018-11-07 03:05:18,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:05:18,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:18,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:05:18,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:18,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:05:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:05:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:05:18,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:05:18,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:05:18,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:05:18,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:05:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:05:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:05:18,558 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 03:05:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:05:26,600 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 03:05:26,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:05:26,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-11-07 03:05:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:05:26,664 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 03:05:26,664 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 03:05:26,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:05:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 03:05:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 03:05:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 03:05:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 03:05:26,966 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 147 [2018-11-07 03:05:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:05:26,967 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 03:05:26,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:05:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 03:05:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 03:05:26,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:05:26,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:05:26,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:05:26,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:05:26,980 INFO L82 PathProgramCache]: Analyzing trace with hash -731114027, now seen corresponding path program 1 times [2018-11-07 03:05:26,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:05:26,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:26,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:05:26,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:26,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:05:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:05:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:05:27,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:05:27,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:05:27,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:05:27,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:05:27,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:05:27,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:05:27,172 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 03:05:40,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:05:40,948 INFO L93 Difference]: Finished difference Result 38051 states and 60894 transitions. [2018-11-07 03:05:40,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:05:40,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 03:05:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:05:41,118 INFO L225 Difference]: With dead ends: 38051 [2018-11-07 03:05:41,118 INFO L226 Difference]: Without dead ends: 28530 [2018-11-07 03:05:41,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:05:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28530 states. [2018-11-07 03:05:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28530 to 28478. [2018-11-07 03:05:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28478 states. [2018-11-07 03:05:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28478 states to 28478 states and 41531 transitions. [2018-11-07 03:05:41,964 INFO L78 Accepts]: Start accepts. Automaton has 28478 states and 41531 transitions. Word has length 158 [2018-11-07 03:05:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:05:41,965 INFO L480 AbstractCegarLoop]: Abstraction has 28478 states and 41531 transitions. [2018-11-07 03:05:41,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:05:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 28478 states and 41531 transitions. [2018-11-07 03:05:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 03:05:41,971 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:05:41,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:05:41,972 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:05:41,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:05:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash -90858887, now seen corresponding path program 1 times [2018-11-07 03:05:41,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:05:41,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:41,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:05:41,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:41,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:05:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:05:42,263 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:05:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:05:42,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:05:42,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:05:42,660 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:05:42,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:05:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:05:42,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:05:42,661 INFO L87 Difference]: Start difference. First operand 28478 states and 41531 transitions. Second operand 6 states. [2018-11-07 03:05:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:05:53,128 INFO L93 Difference]: Finished difference Result 76099 states and 117787 transitions. [2018-11-07 03:05:53,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:05:53,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-07 03:05:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:05:53,356 INFO L225 Difference]: With dead ends: 76099 [2018-11-07 03:05:53,356 INFO L226 Difference]: Without dead ends: 47627 [2018-11-07 03:05:53,486 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:05:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47627 states. [2018-11-07 03:05:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47627 to 47440. [2018-11-07 03:05:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47440 states. [2018-11-07 03:05:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47440 states to 47440 states and 66607 transitions. [2018-11-07 03:05:54,890 INFO L78 Accepts]: Start accepts. Automaton has 47440 states and 66607 transitions. Word has length 192 [2018-11-07 03:05:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:05:54,891 INFO L480 AbstractCegarLoop]: Abstraction has 47440 states and 66607 transitions. [2018-11-07 03:05:54,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:05:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 47440 states and 66607 transitions. [2018-11-07 03:05:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 03:05:54,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:05:54,907 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, 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] [2018-11-07 03:05:54,908 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:05:54,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:05:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1240874338, now seen corresponding path program 1 times [2018-11-07 03:05:54,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:05:54,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:54,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:05:54,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:05:54,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:05:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:05:55,225 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:05:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 120 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:05:55,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:05:55,410 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:05:55,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 03:05:55,414 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], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2303], [2305], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:05:55,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:05:55,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:05:59,636 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:06:00,108 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:06:00,109 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:06:00,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:06:00,123 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:06:02,994 INFO L227 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 75.85% of their original sizes. [2018-11-07 03:06:02,996 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:06:03,649 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 03:06:03,649 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:06:03,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:06:03,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 03:06:03,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:06:03,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:06:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:06:03,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:06:03,652 INFO L87 Difference]: Start difference. First operand 47440 states and 66607 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown