java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:57:18,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:57:18,347 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:57:18,360 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:57:18,360 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:57:18,361 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:57:18,363 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:57:18,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:57:18,366 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:57:18,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:57:18,368 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:57:18,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:57:18,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:57:18,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:57:18,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:57:18,373 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:57:18,373 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:57:18,375 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:57:18,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:57:18,379 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:57:18,380 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:57:18,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:57:18,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:57:18,384 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:57:18,385 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:57:18,386 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:57:18,387 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:57:18,387 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:57:18,391 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:57:18,392 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:57:18,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:57:18,394 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:57:18,394 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:57:18,395 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:57:18,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:57:18,396 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:57:18,398 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:57:18,429 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:57:18,429 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:57:18,430 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:57:18,430 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:57:18,430 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:57:18,433 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:57:18,433 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:57:18,434 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:57:18,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:57:18,434 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:57:18,434 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:57:18,434 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:57:18,435 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:57:18,435 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:57:18,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:57:18,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:57:18,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:57:18,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:57:18,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:57:18,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:57:18,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:57:18,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:57:18,439 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:57:18,439 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:57:18,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:57:18,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:57:18,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:57:18,440 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:57:18,440 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:57:18,441 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:57:18,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:57:18,441 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:57:18,441 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:57:18,441 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:57:18,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:57:18,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:57:18,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:57:18,521 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:57:18,521 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:57:18,522 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-11-07 15:57:18,599 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f116bdfaa/b0df281f3068467ba1a8131e348efddd/FLAG2f424bde4 [2018-11-07 15:57:19,506 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:57:19,507 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-11-07 15:57:19,555 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f116bdfaa/b0df281f3068467ba1a8131e348efddd/FLAG2f424bde4 [2018-11-07 15:57:19,571 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f116bdfaa/b0df281f3068467ba1a8131e348efddd [2018-11-07 15:57:19,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:57:19,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:57:19,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:57:19,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:57:19,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:57:19,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:19" (1/1) ... [2018-11-07 15:57:19,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7047ba1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:19, skipping insertion in model container [2018-11-07 15:57:19,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:19" (1/1) ... [2018-11-07 15:57:19,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:57:19,886 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:57:21,935 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:57:21,939 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:57:23,029 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:57:23,094 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:57:23,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23 WrapperNode [2018-11-07 15:57:23,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:57:23,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:57:23,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:57:23,096 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:57:23,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:57:23,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:57:23,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:57:23,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:57:23,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:23,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:24,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:24,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (1/1) ... [2018-11-07 15:57:24,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:57:24,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:57:24,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:57:24,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:57:24,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (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 15:57:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:57:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:57:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:57:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:57:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:57:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:57:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:57:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:57:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:57:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:57:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:57:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:57:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:57:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:57:24,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:57:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:57:24,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:57:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:57:24,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:57:39,262 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:57:39,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:39 BoogieIcfgContainer [2018-11-07 15:57:39,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:57:39,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:57:39,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:57:39,268 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:57:39,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:57:19" (1/3) ... [2018-11-07 15:57:39,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6892150d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:39, skipping insertion in model container [2018-11-07 15:57:39,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:23" (2/3) ... [2018-11-07 15:57:39,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6892150d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:39, skipping insertion in model container [2018-11-07 15:57:39,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:39" (3/3) ... [2018-11-07 15:57:39,272 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label44_true-unreach-call.c [2018-11-07 15:57:39,283 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:57:39,294 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:57:39,310 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:57:39,363 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:57:39,363 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:57:39,363 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:57:39,363 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:57:39,364 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:57:39,364 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:57:39,364 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:57:39,364 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:57:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:57:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 15:57:39,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:57:39,428 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] [2018-11-07 15:57:39,433 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:57:39,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:57:39,439 INFO L82 PathProgramCache]: Analyzing trace with hash -6596318, now seen corresponding path program 1 times [2018-11-07 15:57:39,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:57:39,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:39,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:57:39,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:39,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:57:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:57:39,904 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:57:40,006 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 15:57:40,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:57:40,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:57:40,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:57:40,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:57:40,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:57:40,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:57:40,041 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:57:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:57:53,365 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-11-07 15:57:53,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:57:53,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-07 15:57:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:57:53,423 INFO L225 Difference]: With dead ends: 4998 [2018-11-07 15:57:53,423 INFO L226 Difference]: Without dead ends: 3218 [2018-11-07 15:57:53,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:57:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-11-07 15:57:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-11-07 15:57:53,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 15:57:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-11-07 15:57:53,688 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 41 [2018-11-07 15:57:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:57:53,689 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-11-07 15:57:53,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:57:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-11-07 15:57:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 15:57:53,696 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:57:53,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:53,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:57:53,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:57:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash -337507924, now seen corresponding path program 1 times [2018-11-07 15:57:53,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:57:53,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:53,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:57:53,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:57:53,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:57:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:57:54,116 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:57:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:57:54,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:57:54,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:57:54,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:57:54,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:57:54,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:57:54,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:57:54,519 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-11-07 15:58:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:19,211 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-11-07 15:58:19,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:58:19,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 15:58:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:19,244 INFO L225 Difference]: With dead ends: 9340 [2018-11-07 15:58:19,244 INFO L226 Difference]: Without dead ends: 6131 [2018-11-07 15:58:19,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:58:19,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-11-07 15:58:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-11-07 15:58:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-11-07 15:58:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-11-07 15:58:19,419 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 113 [2018-11-07 15:58:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:19,420 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-11-07 15:58:19,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:58:19,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-11-07 15:58:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 15:58:19,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:19,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:19,431 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:19,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:19,432 INFO L82 PathProgramCache]: Analyzing trace with hash -392526345, now seen corresponding path program 1 times [2018-11-07 15:58:19,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:19,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:19,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:19,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:19,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:19,765 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:58:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:58:19,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:19,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:58:19,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:19,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:58:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:58:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:58:19,921 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-11-07 15:58:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:40,249 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-11-07 15:58:40,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:58:40,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 15:58:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:40,317 INFO L225 Difference]: With dead ends: 21091 [2018-11-07 15:58:40,318 INFO L226 Difference]: Without dead ends: 15006 [2018-11-07 15:58:40,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:58:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-11-07 15:58:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-11-07 15:58:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-11-07 15:58:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-11-07 15:58:40,678 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 115 [2018-11-07 15:58:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:40,679 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-11-07 15:58:40,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:58:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-11-07 15:58:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 15:58:40,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:40,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:40,683 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:40,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:40,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2002482604, now seen corresponding path program 1 times [2018-11-07 15:58:40,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:40,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:40,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:40,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:40,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:58:40,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:40,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:58:40,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:40,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:58:40,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:58:40,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:58:40,964 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 5 states. [2018-11-07 15:58:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:58:57,241 INFO L93 Difference]: Finished difference Result 45159 states and 70155 transitions. [2018-11-07 15:58:57,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:58:57,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 15:58:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:58:57,357 INFO L225 Difference]: With dead ends: 45159 [2018-11-07 15:58:57,358 INFO L226 Difference]: Without dead ends: 30348 [2018-11-07 15:58:57,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:58:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30348 states. [2018-11-07 15:58:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30348 to 29949. [2018-11-07 15:58:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29949 states. [2018-11-07 15:58:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29949 states to 29949 states and 41233 transitions. [2018-11-07 15:58:58,001 INFO L78 Accepts]: Start accepts. Automaton has 29949 states and 41233 transitions. Word has length 146 [2018-11-07 15:58:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:58:58,001 INFO L480 AbstractCegarLoop]: Abstraction has 29949 states and 41233 transitions. [2018-11-07 15:58:58,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:58:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 29949 states and 41233 transitions. [2018-11-07 15:58:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 15:58:58,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:58,010 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:58:58,010 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:58,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -995199702, now seen corresponding path program 1 times [2018-11-07 15:58:58,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:58,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:58,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:58,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:58,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:58,301 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:58:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 68 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:58:58,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:58:58,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:58:58,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 15:58:58,705 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5454], [5456], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:58:58,779 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:58:58,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:58:59,354 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:58:59,356 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:58:59,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:59,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:58:59,909 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.39% of their original sizes. [2018-11-07 15:58:59,909 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:59:00,257 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 15:59:00,257 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:59:00,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:59:00,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:59:00,259 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:00,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:59:00,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:59:00,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:59:00,260 INFO L87 Difference]: Start difference. First operand 29949 states and 41233 transitions. Second operand 7 states. [2018-11-07 15:59:06,693 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown