java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:23:42,413 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:23:42,415 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:23:42,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:23:42,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:23:42,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:23:42,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:23:42,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:23:42,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:23:42,435 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:23:42,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:23:42,436 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:23:42,437 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:23:42,438 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:23:42,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:23:42,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:23:42,444 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:23:42,447 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:23:42,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:23:42,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:23:42,452 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:23:42,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:23:42,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:23:42,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:23:42,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:23:42,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:23:42,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:23:42,457 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:23:42,458 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:23:42,459 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:23:42,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:23:42,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:23:42,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:23:42,460 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:23:42,461 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:23:42,463 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:23:42,463 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:23:42,491 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:23:42,491 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:23:42,493 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:23:42,493 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:23:42,494 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:23:42,494 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:23:42,494 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:23:42,494 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:23:42,495 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:23:42,495 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:23:42,495 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:23:42,495 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:23:42,496 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:23:42,496 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:23:42,496 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:23:42,496 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:23:42,496 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:23:42,497 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:23:42,497 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:23:42,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:23:42,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:23:42,498 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:23:42,498 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:23:42,498 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:23:42,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:23:42,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:23:42,499 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:23:42,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:23:42,499 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:23:42,500 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:23:42,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:23:42,501 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:23:42,501 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:23:42,502 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:23:42,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:23:42,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:23:42,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:23:42,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:23:42,581 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:23:42,582 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-11-07 14:23:42,643 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd28a8be/4a77d61fb5604793bf759d7bcd882a76/FLAGa8b75d28d [2018-11-07 14:23:43,214 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:23:43,215 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-11-07 14:23:43,234 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd28a8be/4a77d61fb5604793bf759d7bcd882a76/FLAGa8b75d28d [2018-11-07 14:23:43,251 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbd28a8be/4a77d61fb5604793bf759d7bcd882a76 [2018-11-07 14:23:43,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:23:43,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:23:43,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:23:43,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:23:43,270 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:23:43,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:43" (1/1) ... [2018-11-07 14:23:43,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a15b74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:43, skipping insertion in model container [2018-11-07 14:23:43,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:43" (1/1) ... [2018-11-07 14:23:43,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:23:43,359 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:23:43,966 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:23:43,976 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:23:44,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:23:44,236 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:23:44,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44 WrapperNode [2018-11-07 14:23:44,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:23:44,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:23:44,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:23:44,238 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:23:44,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:23:44,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:23:44,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:23:44,417 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:23:44,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... [2018-11-07 14:23:44,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:23:44,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:23:44,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:23:44,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:23:44,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:23:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:23:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:23:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:23:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:23:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:23:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:23:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:23:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:23:44,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:23:49,230 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:23:49,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:49 BoogieIcfgContainer [2018-11-07 14:23:49,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:23:49,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:23:49,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:23:49,237 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:23:49,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:23:43" (1/3) ... [2018-11-07 14:23:49,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f063f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:49, skipping insertion in model container [2018-11-07 14:23:49,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:44" (2/3) ... [2018-11-07 14:23:49,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f063f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:23:49, skipping insertion in model container [2018-11-07 14:23:49,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:23:49" (3/3) ... [2018-11-07 14:23:49,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label03_true-unreach-call.c [2018-11-07 14:23:49,250 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:23:49,259 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:23:49,277 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:23:49,315 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:23:49,315 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:23:49,315 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:23:49,315 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:23:49,315 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:23:49,316 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:23:49,316 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:23:49,316 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:23:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:23:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 14:23:49,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:23:49,354 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] [2018-11-07 14:23:49,356 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:23:49,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:23:49,361 INFO L82 PathProgramCache]: Analyzing trace with hash -509521591, now seen corresponding path program 1 times [2018-11-07 14:23:49,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:23:49,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:49,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:23:49,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:49,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:23:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:23:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:23:49,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:23:49,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:23:49,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:23:49,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:23:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:23:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:23:49,875 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:23:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:23:53,024 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 14:23:53,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:23:53,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-07 14:23:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:23:53,049 INFO L225 Difference]: With dead ends: 985 [2018-11-07 14:23:53,049 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 14:23:53,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:23:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 14:23:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 14:23:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 14:23:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 14:23:53,153 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 37 [2018-11-07 14:23:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:23:53,154 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 14:23:53,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:23:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 14:23:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 14:23:53,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:23:53,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:23:53,162 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:23:53,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:23:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash -484596469, now seen corresponding path program 1 times [2018-11-07 14:23:53,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:23:53,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:53,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:23:53,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:53,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:23:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:23:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:23:53,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:23:53,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:23:53,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:23:53,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:23:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:23:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:23:53,672 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 14:23:58,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:23:58,831 INFO L93 Difference]: Finished difference Result 2340 states and 3735 transitions. [2018-11-07 14:23:58,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:23:58,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-07 14:23:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:23:58,852 INFO L225 Difference]: With dead ends: 2340 [2018-11-07 14:23:58,853 INFO L226 Difference]: Without dead ends: 1660 [2018-11-07 14:23:58,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:23:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-11-07 14:23:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1641. [2018-11-07 14:23:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-11-07 14:23:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2354 transitions. [2018-11-07 14:23:58,955 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2354 transitions. Word has length 118 [2018-11-07 14:23:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:23:58,956 INFO L480 AbstractCegarLoop]: Abstraction has 1641 states and 2354 transitions. [2018-11-07 14:23:58,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:23:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2354 transitions. [2018-11-07 14:23:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 14:23:58,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:23:58,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:23:58,970 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:23:58,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:23:58,970 INFO L82 PathProgramCache]: Analyzing trace with hash 984101383, now seen corresponding path program 1 times [2018-11-07 14:23:58,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:23:58,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:58,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:23:58,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:58,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:23:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:23:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:23:59,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:23:59,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:23:59,160 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:23:59,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:23:59,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:23:59,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:23:59,161 INFO L87 Difference]: Start difference. First operand 1641 states and 2354 transitions. Second operand 4 states. [2018-11-07 14:24:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:01,681 INFO L93 Difference]: Finished difference Result 6063 states and 9064 transitions. [2018-11-07 14:24:01,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:24:01,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 14:24:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:01,713 INFO L225 Difference]: With dead ends: 6063 [2018-11-07 14:24:01,713 INFO L226 Difference]: Without dead ends: 4428 [2018-11-07 14:24:01,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:24:01,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2018-11-07 14:24:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4407. [2018-11-07 14:24:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4407 states. [2018-11-07 14:24:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 6087 transitions. [2018-11-07 14:24:01,870 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 6087 transitions. Word has length 132 [2018-11-07 14:24:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:01,871 INFO L480 AbstractCegarLoop]: Abstraction has 4407 states and 6087 transitions. [2018-11-07 14:24:01,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:24:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 6087 transitions. [2018-11-07 14:24:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 14:24:01,884 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:01,884 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:24:01,884 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:01,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:01,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1801051533, now seen corresponding path program 1 times [2018-11-07 14:24:01,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:01,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:01,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:01,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:01,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 14:24:02,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:24:02,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:24:02,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:02,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:24:02,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:24:02,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:24:02,199 INFO L87 Difference]: Start difference. First operand 4407 states and 6087 transitions. Second operand 3 states. [2018-11-07 14:24:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:03,727 INFO L93 Difference]: Finished difference Result 10338 states and 14849 transitions. [2018-11-07 14:24:03,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:24:03,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-11-07 14:24:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:03,769 INFO L225 Difference]: With dead ends: 10338 [2018-11-07 14:24:03,769 INFO L226 Difference]: Without dead ends: 6126 [2018-11-07 14:24:03,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:24:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2018-11-07 14:24:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5671. [2018-11-07 14:24:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2018-11-07 14:24:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8017 transitions. [2018-11-07 14:24:03,939 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8017 transitions. Word has length 235 [2018-11-07 14:24:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:03,940 INFO L480 AbstractCegarLoop]: Abstraction has 5671 states and 8017 transitions. [2018-11-07 14:24:03,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:24:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8017 transitions. [2018-11-07 14:24:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-07 14:24:03,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:03,958 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:24:03,959 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:03,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1791653501, now seen corresponding path program 1 times [2018-11-07 14:24:03,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:03,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:03,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:03,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 246 proven. 76 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 14:24:04,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:24:04,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:24:04,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-11-07 14:24:04,654 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:24:04,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:24:04,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:24:05,487 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:24:08,901 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 14:24:08,903 INFO L272 AbstractInterpreter]: Visited 127 different actions 742 times. Merged at 7 different actions 37 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 14:24:08,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:08,948 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 14:24:08,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:24:08,948 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 14:24:08,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:08,965 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 14:24:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:09,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 14:24:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 14:24:09,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 14:24:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 14:24:10,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 14:24:10,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 14:24:10,043 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 14:24:10,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 14:24:10,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 14:24:10,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:24:10,044 INFO L87 Difference]: Start difference. First operand 5671 states and 8017 transitions. Second operand 9 states. [2018-11-07 14:24:14,269 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 14:24:16,125 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-11-07 14:24:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:21,730 INFO L93 Difference]: Finished difference Result 19338 states and 30212 transitions. [2018-11-07 14:24:21,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 14:24:21,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-11-07 14:24:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:21,820 INFO L225 Difference]: With dead ends: 19338 [2018-11-07 14:24:21,820 INFO L226 Difference]: Without dead ends: 13862 [2018-11-07 14:24:21,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 648 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=289, Invalid=971, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 14:24:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13862 states. [2018-11-07 14:24:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13862 to 13661. [2018-11-07 14:24:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13661 states. [2018-11-07 14:24:22,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13661 states to 13661 states and 18198 transitions. [2018-11-07 14:24:22,316 INFO L78 Accepts]: Start accepts. Automaton has 13661 states and 18198 transitions. Word has length 314 [2018-11-07 14:24:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:22,317 INFO L480 AbstractCegarLoop]: Abstraction has 13661 states and 18198 transitions. [2018-11-07 14:24:22,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 14:24:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 13661 states and 18198 transitions. [2018-11-07 14:24:22,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 14:24:22,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:22,415 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:24:22,416 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:22,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1723905372, now seen corresponding path program 1 times [2018-11-07 14:24:22,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:22,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:22,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:22,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 14:24:23,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:24:23,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:24:23,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 14:24:23,158 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:24:23,168 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:24:23,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:24:23,396 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:24:24,562 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:24:24,562 INFO L272 AbstractInterpreter]: Visited 186 different actions 544 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:24:24,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:24,587 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:24:25,528 INFO L227 lantSequenceWeakener]: Weakened 420 states. On average, predicates are now at 73.28% of their original sizes. [2018-11-07 14:24:25,528 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:24:26,360 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 14:24:26,360 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:24:26,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:24:26,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-11-07 14:24:26,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:26,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 14:24:26,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 14:24:26,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-11-07 14:24:26,364 INFO L87 Difference]: Start difference. First operand 13661 states and 18198 transitions. Second operand 14 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown