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/Problem19_label17_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:52:19,242 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:52:19,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:52:19,266 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:52:19,267 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:52:19,268 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:52:19,269 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:52:19,272 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:52:19,274 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:52:19,276 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:52:19,277 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:52:19,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:52:19,281 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:52:19,282 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:52:19,283 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:52:19,284 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:52:19,284 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:52:19,289 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:52:19,299 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:52:19,300 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:52:19,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:52:19,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:52:19,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:52:19,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:52:19,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:52:19,306 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:52:19,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:52:19,308 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:52:19,308 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:52:19,311 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:52:19,311 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:52:19,312 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:52:19,312 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:52:19,312 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:52:19,314 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:52:19,315 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:52:19,315 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 00:52:19,336 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:52:19,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:52:19,337 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:52:19,337 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:52:19,337 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:52:19,338 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:52:19,338 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:52:19,338 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:52:19,338 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:52:19,338 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:52:19,339 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:52:19,339 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:52:19,340 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:52:19,340 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:52:19,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:52:19,340 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:52:19,341 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:52:19,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:52:19,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:52:19,341 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:52:19,341 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:52:19,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:52:19,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:52:19,342 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:52:19,342 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:52:19,342 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:52:19,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:52:19,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:52:19,343 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:52:19,343 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:52:19,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:52:19,344 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:52:19,344 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:52:19,344 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:52:19,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:52:19,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:52:19,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:52:19,413 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:52:19,413 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:52:19,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-11-07 00:52:19,481 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a1a40a1/86e862135b874756aa95d1118b41ebd4/FLAGb95b2d474 [2018-11-07 00:52:20,446 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:52:20,449 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-11-07 00:52:20,496 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a1a40a1/86e862135b874756aa95d1118b41ebd4/FLAGb95b2d474 [2018-11-07 00:52:20,516 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a1a40a1/86e862135b874756aa95d1118b41ebd4 [2018-11-07 00:52:20,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:52:20,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:52:20,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:52:20,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:52:20,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:52:20,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:20" (1/1) ... [2018-11-07 00:52:20,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c7ef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20, skipping insertion in model container [2018-11-07 00:52:20,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:20" (1/1) ... [2018-11-07 00:52:20,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:52:20,812 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:52:22,868 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:52:22,873 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:52:24,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:52:24,441 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:52:24,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24 WrapperNode [2018-11-07 00:52:24,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:52:24,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:52:24,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:52:24,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:52:24,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:24,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:24,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:52:24,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:52:24,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:52:24,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:52:24,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:24,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (1/1) ... [2018-11-07 00:52:25,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:52:25,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:52:25,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:52:25,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:52:25,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (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 00:52:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:52:25,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:52:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:52:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 00:52:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 00:52:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 00:52:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 00:52:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:52:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:52:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:52:25,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:52:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:52:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:52:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:52:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:52:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:52:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:52:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:52:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:52:41,471 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:52:41,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:41 BoogieIcfgContainer [2018-11-07 00:52:41,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:52:41,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:52:41,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:52:41,477 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:52:41,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:20" (1/3) ... [2018-11-07 00:52:41,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512e5af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:41, skipping insertion in model container [2018-11-07 00:52:41,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24" (2/3) ... [2018-11-07 00:52:41,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512e5af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:41, skipping insertion in model container [2018-11-07 00:52:41,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:41" (3/3) ... [2018-11-07 00:52:41,480 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label17_false-unreach-call.c [2018-11-07 00:52:41,490 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:52:41,501 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:52:41,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:52:41,574 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:52:41,574 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:52:41,574 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:52:41,575 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:52:41,575 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:52:41,575 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:52:41,575 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:52:41,575 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:52:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 00:52:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 00:52:41,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:52:41,639 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:52:41,641 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:52:41,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:52:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -780886590, now seen corresponding path program 1 times [2018-11-07 00:52:41,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:52:41,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:41,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:52:41,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:41,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:52:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:52:42,074 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:52:42,179 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 00:52:42,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:52:42,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:52:42,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:52:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:52:42,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:52:42,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:52:42,216 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 00:52:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:52:55,022 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-07 00:52:55,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:52:55,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-07 00:52:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:52:55,083 INFO L225 Difference]: With dead ends: 4995 [2018-11-07 00:52:55,083 INFO L226 Difference]: Without dead ends: 3215 [2018-11-07 00:52:55,104 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 00:52:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-07 00:52:55,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-07 00:52:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-07 00:52:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-07 00:52:55,313 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 17 [2018-11-07 00:52:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:52:55,314 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-07 00:52:55,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:52:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-07 00:52:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-07 00:52:55,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:52:55,323 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:52:55,323 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:52:55,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:52:55,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1798896126, now seen corresponding path program 1 times [2018-11-07 00:52:55,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:52:55,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:55,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:52:55,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:55,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:52:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:52:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:52:55,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:52:55,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:52:55,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:52:55,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:52:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:52:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:52:55,788 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-07 00:53:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:53:25,365 INFO L93 Difference]: Finished difference Result 12248 states and 22704 transitions. [2018-11-07 00:53:25,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:53:25,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-07 00:53:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:53:25,419 INFO L225 Difference]: With dead ends: 12248 [2018-11-07 00:53:25,419 INFO L226 Difference]: Without dead ends: 9041 [2018-11-07 00:53:25,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:53:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9041 states. [2018-11-07 00:53:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9041 to 8960. [2018-11-07 00:53:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8960 states. [2018-11-07 00:53:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8960 states to 8960 states and 13239 transitions. [2018-11-07 00:53:25,705 INFO L78 Accepts]: Start accepts. Automaton has 8960 states and 13239 transitions. Word has length 91 [2018-11-07 00:53:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:53:25,706 INFO L480 AbstractCegarLoop]: Abstraction has 8960 states and 13239 transitions. [2018-11-07 00:53:25,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:53:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8960 states and 13239 transitions. [2018-11-07 00:53:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 00:53:25,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:53:25,714 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:53:25,714 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:53:25,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:53:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 242282510, now seen corresponding path program 1 times [2018-11-07 00:53:25,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:53:25,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:25,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:53:25,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:25,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:53:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:53:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:53:26,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:53:26,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:53:26,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:53:26,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:53:26,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:53:26,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:53:26,125 INFO L87 Difference]: Start difference. First operand 8960 states and 13239 transitions. Second operand 6 states. [2018-11-07 00:53:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:53:41,268 INFO L93 Difference]: Finished difference Result 27213 states and 40746 transitions. [2018-11-07 00:53:41,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:53:41,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-07 00:53:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:53:41,379 INFO L225 Difference]: With dead ends: 27213 [2018-11-07 00:53:41,379 INFO L226 Difference]: Without dead ends: 18259 [2018-11-07 00:53:41,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:53:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18259 states. [2018-11-07 00:53:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18259 to 17982. [2018-11-07 00:53:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17982 states. [2018-11-07 00:53:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17982 states to 17982 states and 26015 transitions. [2018-11-07 00:53:41,876 INFO L78 Accepts]: Start accepts. Automaton has 17982 states and 26015 transitions. Word has length 99 [2018-11-07 00:53:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:53:41,877 INFO L480 AbstractCegarLoop]: Abstraction has 17982 states and 26015 transitions. [2018-11-07 00:53:41,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:53:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17982 states and 26015 transitions. [2018-11-07 00:53:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 00:53:41,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:53:41,887 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:53:41,887 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:53:41,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:53:41,887 INFO L82 PathProgramCache]: Analyzing trace with hash -801426972, now seen corresponding path program 1 times [2018-11-07 00:53:41,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:53:41,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:41,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:53:41,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:41,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:53:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:53:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:53:42,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:53:42,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:53:42,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:53:42,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:53:42,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:53:42,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:53:42,201 INFO L87 Difference]: Start difference. First operand 17982 states and 26015 transitions. Second operand 5 states. [2018-11-07 00:54:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:54:00,259 INFO L93 Difference]: Finished difference Result 55206 states and 81575 transitions. [2018-11-07 00:54:00,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:54:00,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-07 00:54:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:54:00,391 INFO L225 Difference]: With dead ends: 55206 [2018-11-07 00:54:00,391 INFO L226 Difference]: Without dead ends: 37230 [2018-11-07 00:54:00,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:54:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37230 states. [2018-11-07 00:54:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37230 to 36296. [2018-11-07 00:54:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36296 states. [2018-11-07 00:54:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36296 states to 36296 states and 47823 transitions. [2018-11-07 00:54:01,226 INFO L78 Accepts]: Start accepts. Automaton has 36296 states and 47823 transitions. Word has length 119 [2018-11-07 00:54:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:54:01,227 INFO L480 AbstractCegarLoop]: Abstraction has 36296 states and 47823 transitions. [2018-11-07 00:54:01,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:54:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 36296 states and 47823 transitions. [2018-11-07 00:54:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 00:54:01,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:54:01,233 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:01,233 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:54:01,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1894482663, now seen corresponding path program 1 times [2018-11-07 00:54:01,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:54:01,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:01,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:54:01,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:01,239 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:54:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:54:01,579 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:54:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:54:02,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:54:02,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:54:02,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:54:02,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:54:02,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:54:02,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:54:02,003 INFO L87 Difference]: Start difference. First operand 36296 states and 47823 transitions. Second operand 6 states. [2018-11-07 00:54:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:54:17,886 INFO L93 Difference]: Finished difference Result 86377 states and 117279 transitions. [2018-11-07 00:54:17,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:54:17,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-11-07 00:54:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:54:18,053 INFO L225 Difference]: With dead ends: 86377 [2018-11-07 00:54:18,054 INFO L226 Difference]: Without dead ends: 50087 [2018-11-07 00:54:18,141 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 00:54:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50087 states. [2018-11-07 00:54:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50087 to 49189. [2018-11-07 00:54:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49189 states. [2018-11-07 00:54:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49189 states to 49189 states and 63619 transitions. [2018-11-07 00:54:18,970 INFO L78 Accepts]: Start accepts. Automaton has 49189 states and 63619 transitions. Word has length 182 [2018-11-07 00:54:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:54:18,971 INFO L480 AbstractCegarLoop]: Abstraction has 49189 states and 63619 transitions. [2018-11-07 00:54:18,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:54:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 49189 states and 63619 transitions. [2018-11-07 00:54:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-07 00:54:18,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:54:18,974 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:18,974 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:54:18,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:18,974 INFO L82 PathProgramCache]: Analyzing trace with hash -99560630, now seen corresponding path program 1 times [2018-11-07 00:54:18,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:54:18,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:18,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:54:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:18,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:54:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:54:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:54:19,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:54:19,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:54:19,259 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:54:19,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:54:19,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:54:19,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:54:19,260 INFO L87 Difference]: Start difference. First operand 49189 states and 63619 transitions. Second operand 4 states. [2018-11-07 00:54:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:54:35,794 INFO L93 Difference]: Finished difference Result 178140 states and 247819 transitions. [2018-11-07 00:54:35,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:54:35,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-11-07 00:54:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:54:36,228 INFO L225 Difference]: With dead ends: 178140 [2018-11-07 00:54:36,229 INFO L226 Difference]: Without dead ends: 128957 [2018-11-07 00:54:36,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:54:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128957 states. [2018-11-07 00:54:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128957 to 128519. [2018-11-07 00:54:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128519 states. [2018-11-07 00:54:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128519 states to 128519 states and 170164 transitions. [2018-11-07 00:54:38,744 INFO L78 Accepts]: Start accepts. Automaton has 128519 states and 170164 transitions. Word has length 229 [2018-11-07 00:54:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:54:38,744 INFO L480 AbstractCegarLoop]: Abstraction has 128519 states and 170164 transitions. [2018-11-07 00:54:38,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:54:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 128519 states and 170164 transitions. [2018-11-07 00:54:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-11-07 00:54:38,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:54:38,798 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:54:38,798 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:54:38,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:38,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2113099186, now seen corresponding path program 1 times [2018-11-07 00:54:38,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:54:38,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:38,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:54:38,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:38,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:54:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:54:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 275 proven. 283 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2018-11-07 00:54:40,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:54:40,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:54:40,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 737 with the following transitions: [2018-11-07 00:54:40,720 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5262], [5264], [5267], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [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], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5897], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 00:54:40,822 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:54:40,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:54:43,959 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:54:50,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:54:50,174 INFO L272 AbstractInterpreter]: Visited 223 different actions 223 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:54:50,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:50,188 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:54:56,590 INFO L227 lantSequenceWeakener]: Weakened 717 states. On average, predicates are now at 75.03% of their original sizes. [2018-11-07 00:54:56,591 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:54:57,233 INFO L415 sIntCurrentIteration]: We unified 735 AI predicates to 735 [2018-11-07 00:54:57,233 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:54:57,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:54:57,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:54:57,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:54:57,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:54:57,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:54:57,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:54:57,236 INFO L87 Difference]: Start difference. First operand 128519 states and 170164 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown