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/Problem18_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:14:22,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:14:22,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:14:22,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:14:22,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:14:22,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:14:22,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:14:22,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:14:22,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:14:22,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:14:22,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:14:22,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:14:22,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:14:22,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:14:22,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:14:22,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:14:22,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:14:22,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:14:22,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:14:22,437 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:14:22,438 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:14:22,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:14:22,445 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:14:22,446 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:14:22,446 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:14:22,450 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:14:22,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:14:22,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:14:22,457 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:14:22,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:14:22,458 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:14:22,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:14:22,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:14:22,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:14:22,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:14:22,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:14:22,465 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 15:14:22,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:14:22,492 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:14:22,494 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:14:22,494 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:14:22,494 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:14:22,495 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:14:22,495 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:14:22,495 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:14:22,496 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:14:22,496 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:14:22,496 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:14:22,496 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:14:22,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:14:22,497 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:14:22,497 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:14:22,499 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:14:22,499 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:14:22,499 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:14:22,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:14:22,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:14:22,500 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:14:22,500 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:14:22,500 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:14:22,502 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:14:22,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:14:22,502 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:14:22,503 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:14:22,503 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:14:22,503 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:14:22,503 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:14:22,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:14:22,504 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:14:22,504 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:14:22,504 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:14:22,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:14:22,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:14:22,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:14:22,605 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:14:22,606 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:14:22,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label59_true-unreach-call.c [2018-10-27 15:14:22,681 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/729799d22/9046b51fdb6e4256933ac2c4651b8233/FLAGb05460ad3 [2018-10-27 15:14:23,467 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:14:23,467 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label59_true-unreach-call.c [2018-10-27 15:14:23,493 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/729799d22/9046b51fdb6e4256933ac2c4651b8233/FLAGb05460ad3 [2018-10-27 15:14:23,510 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/729799d22/9046b51fdb6e4256933ac2c4651b8233 [2018-10-27 15:14:23,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:14:23,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:14:23,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:14:23,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:14:23,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:14:23,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:14:23" (1/1) ... [2018-10-27 15:14:23,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:23, skipping insertion in model container [2018-10-27 15:14:23,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:14:23" (1/1) ... [2018-10-27 15:14:23,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:14:23,713 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:14:24,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:14:24,845 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:14:25,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:14:25,326 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:14:25,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25 WrapperNode [2018-10-27 15:14:25,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:14:25,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:14:25,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:14:25,328 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:14:25,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:14:25,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:14:25,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:14:25,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:14:25,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:25,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:26,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (1/1) ... [2018-10-27 15:14:26,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:14:26,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:14:26,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:14:26,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:14:26,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (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 15:14:26,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:14:26,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:14:26,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:14:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:14:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:14:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:14:26,128 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:14:26,128 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:14:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:14:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:14:26,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:14:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:14:34,455 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:14:34,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:14:34 BoogieIcfgContainer [2018-10-27 15:14:34,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:14:34,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:14:34,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:14:34,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:14:34,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:14:23" (1/3) ... [2018-10-27 15:14:34,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:14:34, skipping insertion in model container [2018-10-27 15:14:34,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:14:25" (2/3) ... [2018-10-27 15:14:34,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:14:34, skipping insertion in model container [2018-10-27 15:14:34,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:14:34" (3/3) ... [2018-10-27 15:14:34,468 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label59_true-unreach-call.c [2018-10-27 15:14:34,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:14:34,489 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:14:34,509 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:14:34,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:14:34,561 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:14:34,561 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:14:34,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:14:34,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:14:34,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:14:34,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:14:34,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:14:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 15:14:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-27 15:14:34,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:14:34,621 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:14:34,623 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:14:34,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:14:34,630 INFO L82 PathProgramCache]: Analyzing trace with hash 520991260, now seen corresponding path program 1 times [2018-10-27 15:14:34,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:14:34,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:34,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:14:34,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:34,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:14:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:14:35,057 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:14:35,178 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 15:14:35,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:14:35,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:14:35,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:14:35,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:14:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:14:35,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:14:35,212 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 15:14:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:14:41,374 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 15:14:41,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:14:41,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-10-27 15:14:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:14:41,410 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 15:14:41,410 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 15:14:41,421 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 15:14:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 15:14:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 15:14:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 15:14:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-10-27 15:14:41,570 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 44 [2018-10-27 15:14:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:14:41,571 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-10-27 15:14:41,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:14:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-10-27 15:14:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 15:14:41,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:14:41,579 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:41,579 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:14:41,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:14:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash 312836970, now seen corresponding path program 1 times [2018-10-27 15:14:41,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:14:41,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:41,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:14:41,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:41,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:14:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:14:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:14:41,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:14:41,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:14:41,858 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:14:41,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:14:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:14:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:14:41,861 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-10-27 15:14:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:14:49,657 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-10-27 15:14:49,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:14:49,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-27 15:14:49,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:14:49,677 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 15:14:49,678 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 15:14:49,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:14:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 15:14:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 15:14:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 15:14:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-10-27 15:14:49,779 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 114 [2018-10-27 15:14:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:14:49,780 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-10-27 15:14:49,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:14:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-10-27 15:14:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 15:14:49,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:14:49,787 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:49,787 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:14:49,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:14:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2035714247, now seen corresponding path program 1 times [2018-10-27 15:14:49,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:14:49,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:49,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:14:49,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:49,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:14:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:14:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:14:50,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:14:50,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:14:50,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:14:50,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:14:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:14:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:14:50,019 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-10-27 15:14:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:14:55,652 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-10-27 15:14:55,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:14:55,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-27 15:14:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:14:55,683 INFO L225 Difference]: With dead ends: 7345 [2018-10-27 15:14:55,683 INFO L226 Difference]: Without dead ends: 4426 [2018-10-27 15:14:55,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:14:55,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-10-27 15:14:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-10-27 15:14:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-10-27 15:14:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-10-27 15:14:55,829 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 115 [2018-10-27 15:14:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:14:55,830 INFO L481 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-10-27 15:14:55,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:14:55,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-10-27 15:14:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 15:14:55,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:14:55,836 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:55,837 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:14:55,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:14:55,837 INFO L82 PathProgramCache]: Analyzing trace with hash 930788643, now seen corresponding path program 1 times [2018-10-27 15:14:55,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:14:55,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:55,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:14:55,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:14:55,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:14:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:14:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:14:56,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:14:56,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:14:56,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:14:56,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:14:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:14:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:14:56,132 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-10-27 15:15:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:15:08,954 INFO L93 Difference]: Finished difference Result 14820 states and 21982 transitions. [2018-10-27 15:15:08,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:15:08,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-27 15:15:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:15:09,004 INFO L225 Difference]: With dead ends: 14820 [2018-10-27 15:15:09,005 INFO L226 Difference]: Without dead ends: 10435 [2018-10-27 15:15:09,029 INFO L605 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 [2018-10-27 15:15:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2018-10-27 15:15:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10283. [2018-10-27 15:15:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10283 states. [2018-10-27 15:15:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 13623 transitions. [2018-10-27 15:15:09,284 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 13623 transitions. Word has length 117 [2018-10-27 15:15:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:15:09,285 INFO L481 AbstractCegarLoop]: Abstraction has 10283 states and 13623 transitions. [2018-10-27 15:15:09,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:15:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 13623 transitions. [2018-10-27 15:15:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 15:15:09,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:15:09,287 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,287 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:15:09,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:15:09,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1545723122, now seen corresponding path program 1 times [2018-10-27 15:15:09,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:15:09,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:15:09,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:15:09,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:15:09,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:15:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:15:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:15:09,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:15:09,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:15:09,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:15:09,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:15:09,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:15:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:15:09,487 INFO L87 Difference]: Start difference. First operand 10283 states and 13623 transitions. Second operand 3 states. [2018-10-27 15:15:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:15:14,340 INFO L93 Difference]: Finished difference Result 29769 states and 40235 transitions. [2018-10-27 15:15:14,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:15:14,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2018-10-27 15:15:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:15:14,437 INFO L225 Difference]: With dead ends: 29769 [2018-10-27 15:15:14,437 INFO L226 Difference]: Without dead ends: 19492 [2018-10-27 15:15:14,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:15:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19492 states. [2018-10-27 15:15:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19492 to 19484. [2018-10-27 15:15:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19484 states. [2018-10-27 15:15:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19484 states to 19484 states and 23730 transitions. [2018-10-27 15:15:14,949 INFO L78 Accepts]: Start accepts. Automaton has 19484 states and 23730 transitions. Word has length 142 [2018-10-27 15:15:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:15:14,949 INFO L481 AbstractCegarLoop]: Abstraction has 19484 states and 23730 transitions. [2018-10-27 15:15:14,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:15:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 19484 states and 23730 transitions. [2018-10-27 15:15:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 15:15:14,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:15:14,962 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:15:14,962 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:15:14,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:15:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1067446861, now seen corresponding path program 1 times [2018-10-27 15:15:14,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:15:14,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:15:14,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:15:14,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:15:14,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:15:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:15:15,647 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-27 15:15:16,040 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-27 15:15:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:15:16,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:15:16,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:15:16,357 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-27 15:15:16,360 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1875], [1877], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 15:15:16,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:15:16,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:15:16,964 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:15:16,965 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 15:15:17,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:15:17,015 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:15:17,576 INFO L227 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-27 15:15:17,576 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:15:17,749 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-10-27 15:15:17,749 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:15:17,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:15:17,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-10-27 15:15:17,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:15:17,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:15:17,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:15:17,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:15:17,755 INFO L87 Difference]: Start difference. First operand 19484 states and 23730 transitions. Second operand 6 states. [2018-10-27 15:15:23,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown