java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:10:35,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:10:35,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:10:35,399 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:10:35,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:10:35,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:10:35,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:10:35,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:10:35,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:10:35,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:10:35,406 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:10:35,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:10:35,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:10:35,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:10:35,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:10:35,419 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:10:35,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:10:35,421 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:10:35,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:10:35,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:10:35,428 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:10:35,429 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:10:35,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:10:35,432 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:10:35,433 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:10:35,434 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:10:35,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:10:35,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:10:35,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:10:35,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:10:35,440 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:10:35,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:10:35,441 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:10:35,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:10:35,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:10:35,443 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:10:35,443 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:10:35,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:10:35,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:10:35,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:10:35,471 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:10:35,471 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:10:35,472 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:10:35,472 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:10:35,473 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:10:35,473 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:10:35,473 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:10:35,473 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:10:35,473 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:10:35,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:10:35,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:10:35,474 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:10:35,474 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:10:35,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:10:35,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:10:35,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:10:35,476 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:10:35,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:10:35,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:10:35,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:10:35,477 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:10:35,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:10:35,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:10:35,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:10:35,478 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:10:35,478 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:10:35,478 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:10:35,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:10:35,479 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:10:35,479 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:10:35,479 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:10:35,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:10:35,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:10:35,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:10:35,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:10:35,548 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:10:35,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-27 14:10:35,617 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71aa8c1c9/2593ae37a6cc440ebd14b96ed6955e22/FLAG918029ef8 [2018-10-27 14:10:36,408 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:10:36,409 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-27 14:10:36,445 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71aa8c1c9/2593ae37a6cc440ebd14b96ed6955e22/FLAG918029ef8 [2018-10-27 14:10:36,464 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/71aa8c1c9/2593ae37a6cc440ebd14b96ed6955e22 [2018-10-27 14:10:36,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:10:36,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:10:36,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:10:36,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:10:36,483 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:10:36,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:10:36" (1/1) ... [2018-10-27 14:10:36,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708368ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:36, skipping insertion in model container [2018-10-27 14:10:36,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:10:36" (1/1) ... [2018-10-27 14:10:36,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:10:36,637 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:10:37,883 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:10:37,887 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:10:38,412 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:10:38,441 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:10:38,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38 WrapperNode [2018-10-27 14:10:38,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:10:38,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:10:38,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:10:38,444 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:10:38,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:38,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:38,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:10:38,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:10:38,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:10:38,908 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:10:38,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:38,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:38,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:38,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:39,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:39,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:39,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... [2018-10-27 14:10:39,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:10:39,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:10:39,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:10:39,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:10:39,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:10:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:10:39,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:10:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:10:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:10:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:10:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:10:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:10:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:10:39,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:10:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:10:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:10:39,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:10:39,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:10:39,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:10:50,006 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:10:50,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:10:50 BoogieIcfgContainer [2018-10-27 14:10:50,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:10:50,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:10:50,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:10:50,012 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:10:50,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:10:36" (1/3) ... [2018-10-27 14:10:50,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae90da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:10:50, skipping insertion in model container [2018-10-27 14:10:50,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:10:38" (2/3) ... [2018-10-27 14:10:50,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae90da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:10:50, skipping insertion in model container [2018-10-27 14:10:50,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:10:50" (3/3) ... [2018-10-27 14:10:50,015 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-10-27 14:10:50,025 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:10:50,035 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:10:50,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:10:50,104 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:10:50,104 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:10:50,104 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:10:50,105 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:10:50,105 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:10:50,105 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:10:50,105 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:10:50,105 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:10:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 14:10:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 14:10:50,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:10:50,160 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] [2018-10-27 14:10:50,162 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:10:50,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:10:50,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2139876300, now seen corresponding path program 1 times [2018-10-27 14:10:50,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:10:50,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:50,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:10:50,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:10:50,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:10:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:10:50,627 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:10:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:10:50,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:10:50,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:10:50,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:10:50,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:10:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:10:50,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:10:50,725 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 14:11:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:01,730 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 14:11:01,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:11:01,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 14:11:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:01,778 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 14:11:01,778 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 14:11:01,795 INFO L605 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 [2018-10-27 14:11:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 14:11:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 14:11:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 14:11:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-27 14:11:01,964 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-10-27 14:11:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:01,965 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-27 14:11:01,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:11:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-27 14:11:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 14:11:01,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:01,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:01,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:01,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1482898002, now seen corresponding path program 1 times [2018-10-27 14:11:01,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:01,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:01,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:01,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:11:02,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:11:02,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:11:02,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:02,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:11:02,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:11:02,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:11:02,354 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-27 14:11:04,833 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-27 14:11:12,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:12,072 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-27 14:11:12,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:11:12,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-27 14:11:12,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:12,096 INFO L225 Difference]: With dead ends: 4818 [2018-10-27 14:11:12,096 INFO L226 Difference]: Without dead ends: 3220 [2018-10-27 14:11:12,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:11:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-27 14:11:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-27 14:11:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-27 14:11:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-27 14:11:12,224 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 114 [2018-10-27 14:11:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:12,226 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-27 14:11:12,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:11:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-27 14:11:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-27 14:11:12,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:12,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:12,232 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:12,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:12,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1633492773, now seen corresponding path program 1 times [2018-10-27 14:11:12,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:12,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:12,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:12,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:12,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:11:12,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:11:12,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:11:12,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:12,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:11:12,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:11:12,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:11:12,494 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-27 14:11:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:27,702 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-27 14:11:27,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:11:27,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-27 14:11:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:27,750 INFO L225 Difference]: With dead ends: 11148 [2018-10-27 14:11:27,750 INFO L226 Difference]: Without dead ends: 7968 [2018-10-27 14:11:27,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:11:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-27 14:11:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-27 14:11:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-27 14:11:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-27 14:11:27,986 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 119 [2018-10-27 14:11:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:27,986 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-27 14:11:27,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:11:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-27 14:11:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 14:11:27,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:27,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:27,997 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:27,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1525604427, now seen corresponding path program 1 times [2018-10-27 14:11:27,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:27,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:27,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:27,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:27,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:28,236 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:11:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:11:28,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:11:28,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:11:28,402 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:28,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:11:28,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:11:28,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:11:28,403 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-27 14:11:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:11:41,718 INFO L93 Difference]: Finished difference Result 22227 states and 38012 transitions. [2018-10-27 14:11:41,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:11:41,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 14:11:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:11:41,786 INFO L225 Difference]: With dead ends: 22227 [2018-10-27 14:11:41,786 INFO L226 Difference]: Without dead ends: 14309 [2018-10-27 14:11:41,821 INFO L605 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 [2018-10-27 14:11:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14309 states. [2018-10-27 14:11:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14309 to 14219. [2018-10-27 14:11:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-27 14:11:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21552 transitions. [2018-10-27 14:11:42,182 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21552 transitions. Word has length 127 [2018-10-27 14:11:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:11:42,182 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21552 transitions. [2018-10-27 14:11:42,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:11:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21552 transitions. [2018-10-27 14:11:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-27 14:11:42,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:11:42,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:11:42,188 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:11:42,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:11:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash -654123146, now seen corresponding path program 1 times [2018-10-27 14:11:42,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:11:42,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:42,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:11:42,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:11:42,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:11:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:11:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:11:42,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:11:42,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:11:42,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:11:42,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:11:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:11:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:11:42,688 INFO L87 Difference]: Start difference. First operand 14219 states and 21552 transitions. Second operand 6 states. [2018-10-27 14:12:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:12:07,057 INFO L93 Difference]: Finished difference Result 56454 states and 95969 transitions. [2018-10-27 14:12:07,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 14:12:07,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-27 14:12:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:12:07,283 INFO L225 Difference]: With dead ends: 56454 [2018-10-27 14:12:07,283 INFO L226 Difference]: Without dead ends: 42241 [2018-10-27 14:12:07,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:12:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42241 states. [2018-10-27 14:12:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42241 to 42001. [2018-10-27 14:12:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42001 states. [2018-10-27 14:12:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42001 states to 42001 states and 62971 transitions. [2018-10-27 14:12:08,525 INFO L78 Accepts]: Start accepts. Automaton has 42001 states and 62971 transitions. Word has length 144 [2018-10-27 14:12:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:12:08,526 INFO L481 AbstractCegarLoop]: Abstraction has 42001 states and 62971 transitions. [2018-10-27 14:12:08,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:12:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 42001 states and 62971 transitions. [2018-10-27 14:12:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-27 14:12:08,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:12:08,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:12:08,795 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:12:08,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:12:08,796 INFO L82 PathProgramCache]: Analyzing trace with hash -271525473, now seen corresponding path program 1 times [2018-10-27 14:12:08,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:12:08,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:12:08,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:12:08,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:12:08,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:12:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:12:09,120 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:12:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:12:09,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:12:09,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:12:09,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:12:09,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:12:09,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:12:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:12:09,559 INFO L87 Difference]: Start difference. First operand 42001 states and 62971 transitions. Second operand 6 states. [2018-10-27 14:12:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:12:23,546 INFO L93 Difference]: Finished difference Result 104611 states and 165862 transitions. [2018-10-27 14:12:23,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:12:23,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-27 14:12:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:12:23,814 INFO L225 Difference]: With dead ends: 104611 [2018-10-27 14:12:23,815 INFO L226 Difference]: Without dead ends: 62616 [2018-10-27 14:12:23,937 INFO L605 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 [2018-10-27 14:12:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62616 states. [2018-10-27 14:12:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62616 to 62366. [2018-10-27 14:12:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62366 states. [2018-10-27 14:12:25,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62366 states to 62366 states and 87757 transitions. [2018-10-27 14:12:25,203 INFO L78 Accepts]: Start accepts. Automaton has 62366 states and 87757 transitions. Word has length 165 [2018-10-27 14:12:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:12:25,204 INFO L481 AbstractCegarLoop]: Abstraction has 62366 states and 87757 transitions. [2018-10-27 14:12:25,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:12:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 62366 states and 87757 transitions. [2018-10-27 14:12:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-27 14:12:25,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:12:25,215 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:12:25,215 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:12:25,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:12:25,216 INFO L82 PathProgramCache]: Analyzing trace with hash 708461889, now seen corresponding path program 1 times [2018-10-27 14:12:25,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:12:25,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:12:25,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:12:25,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:12:25,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:12:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:12:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:12:25,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:12:25,483 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:12:25,484 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-27 14:12:25,486 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2087], [2089], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 14:12:25,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:12:25,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:12:26,071 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:12:26,930 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:12:26,933 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:12:26,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:12:26,973 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:12:28,429 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 75.44% of their original sizes. [2018-10-27 14:12:28,429 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:12:28,800 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-10-27 14:12:28,801 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:12:28,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:12:28,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-27 14:12:28,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:12:28,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:12:28,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:12:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:12:28,807 INFO L87 Difference]: Start difference. First operand 62366 states and 87757 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown