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/Problem10_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:37:10,435 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:37:10,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:37:10,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:37:10,461 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:37:10,462 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:37:10,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:37:10,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:37:10,467 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:37:10,468 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:37:10,469 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:37:10,469 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:37:10,470 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:37:10,471 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:37:10,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:37:10,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:37:10,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:37:10,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:37:10,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:37:10,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:37:10,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:37:10,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:37:10,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:37:10,484 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:37:10,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:37:10,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:37:10,486 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:37:10,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:37:10,488 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:37:10,489 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:37:10,489 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:37:10,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:37:10,490 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:37:10,490 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:37:10,491 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:37:10,492 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:37:10,493 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 11:37:10,509 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:37:10,509 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:37:10,510 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:37:10,510 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:37:10,511 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:37:10,511 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:37:10,511 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:37:10,511 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:37:10,511 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:37:10,512 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:37:10,512 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:37:10,512 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:37:10,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:37:10,513 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:37:10,513 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:37:10,513 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:37:10,513 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:37:10,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:37:10,514 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:37:10,514 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:37:10,514 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:37:10,514 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:37:10,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:37:10,515 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:37:10,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:37:10,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:37:10,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:37:10,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:37:10,516 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:37:10,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:37:10,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:37:10,516 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:37:10,517 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:37:10,517 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:37:10,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:37:10,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:37:10,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:37:10,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:37:10,599 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:37:10,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label26_false-unreach-call.c [2018-11-07 11:37:10,669 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d584228/343c2201e3c8495f8daf7877b1f6fbee/FLAGb08f4ae5e [2018-11-07 11:37:11,258 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:37:11,259 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label26_false-unreach-call.c [2018-11-07 11:37:11,279 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d584228/343c2201e3c8495f8daf7877b1f6fbee/FLAGb08f4ae5e [2018-11-07 11:37:11,297 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d584228/343c2201e3c8495f8daf7877b1f6fbee [2018-11-07 11:37:11,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:37:11,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:37:11,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:37:11,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:37:11,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:37:11,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:37:11" (1/1) ... [2018-11-07 11:37:11,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46117c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:11, skipping insertion in model container [2018-11-07 11:37:11,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:37:11" (1/1) ... [2018-11-07 11:37:11,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:37:11,402 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:37:11,862 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:37:11,866 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:37:12,004 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:37:12,029 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:37:12,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12 WrapperNode [2018-11-07 11:37:12,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:37:12,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:37:12,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:37:12,031 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:37:12,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:37:12,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:37:12,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:37:12,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:37:12,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (1/1) ... [2018-11-07 11:37:12,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:37:12,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:37:12,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:37:12,310 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:37:12,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (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 11:37:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:37:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:37:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:37:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:37:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:37:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:37:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:37:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:37:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:37:15,418 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:37:15,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:37:15 BoogieIcfgContainer [2018-11-07 11:37:15,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:37:15,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:37:15,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:37:15,424 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:37:15,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:37:11" (1/3) ... [2018-11-07 11:37:15,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea6830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:37:15, skipping insertion in model container [2018-11-07 11:37:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:37:12" (2/3) ... [2018-11-07 11:37:15,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ea6830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:37:15, skipping insertion in model container [2018-11-07 11:37:15,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:37:15" (3/3) ... [2018-11-07 11:37:15,428 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label26_false-unreach-call.c [2018-11-07 11:37:15,437 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:37:15,446 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:37:15,463 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:37:15,504 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:37:15,504 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:37:15,504 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:37:15,504 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:37:15,505 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:37:15,506 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:37:15,506 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:37:15,506 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:37:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 11:37:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 11:37:15,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:15,545 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] [2018-11-07 11:37:15,547 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:15,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:15,554 INFO L82 PathProgramCache]: Analyzing trace with hash 937477233, now seen corresponding path program 1 times [2018-11-07 11:37:15,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:15,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:15,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:15,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:15,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:15,934 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 11:37:15,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:37:15,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:37:15,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:15,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:37:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:37:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:37:15,960 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-11-07 11:37:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:18,828 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-11-07 11:37:18,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:37:18,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-07 11:37:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:18,849 INFO L225 Difference]: With dead ends: 737 [2018-11-07 11:37:18,850 INFO L226 Difference]: Without dead ends: 515 [2018-11-07 11:37:18,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:37:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-11-07 11:37:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-11-07 11:37:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-11-07 11:37:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-11-07 11:37:18,954 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 23 [2018-11-07 11:37:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:18,954 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-11-07 11:37:18,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:37:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-11-07 11:37:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 11:37:18,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:18,961 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:37:18,962 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:18,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 190361739, now seen corresponding path program 1 times [2018-11-07 11:37:18,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:18,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:18,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:18,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:18,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:37:19,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:37:19,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:37:19,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:19,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:37:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:37:19,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:37:19,311 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-11-07 11:37:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:22,066 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-11-07 11:37:22,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:37:22,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-11-07 11:37:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:22,084 INFO L225 Difference]: With dead ends: 1863 [2018-11-07 11:37:22,084 INFO L226 Difference]: Without dead ends: 1354 [2018-11-07 11:37:22,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:37:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-11-07 11:37:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-11-07 11:37:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-11-07 11:37:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-11-07 11:37:22,215 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 98 [2018-11-07 11:37:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:22,216 INFO L480 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-11-07 11:37:22,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:37:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-11-07 11:37:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 11:37:22,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:22,224 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:37:22,224 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:22,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:22,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1323817903, now seen corresponding path program 1 times [2018-11-07 11:37:22,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:22,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:22,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:22,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:22,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:37:22,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:37:22,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:37:22,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:22,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:37:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:37:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:37:22,482 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-11-07 11:37:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:25,445 INFO L93 Difference]: Finished difference Result 3507 states and 5683 transitions. [2018-11-07 11:37:25,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:37:25,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 11:37:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:25,464 INFO L225 Difference]: With dead ends: 3507 [2018-11-07 11:37:25,465 INFO L226 Difference]: Without dead ends: 2182 [2018-11-07 11:37:25,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:37:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2018-11-07 11:37:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2160. [2018-11-07 11:37:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2018-11-07 11:37:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3172 transitions. [2018-11-07 11:37:25,559 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3172 transitions. Word has length 100 [2018-11-07 11:37:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:25,560 INFO L480 AbstractCegarLoop]: Abstraction has 2160 states and 3172 transitions. [2018-11-07 11:37:25,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:37:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3172 transitions. [2018-11-07 11:37:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 11:37:25,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:25,562 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:37:25,563 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:25,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1557164548, now seen corresponding path program 1 times [2018-11-07 11:37:25,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:25,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:25,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:25,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:25,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:37:25,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:37:25,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:37:25,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:25,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:37:25,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:37:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:37:25,743 INFO L87 Difference]: Start difference. First operand 2160 states and 3172 transitions. Second operand 4 states. [2018-11-07 11:37:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:27,161 INFO L93 Difference]: Finished difference Result 7295 states and 11297 transitions. [2018-11-07 11:37:27,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:37:27,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-11-07 11:37:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:27,184 INFO L225 Difference]: With dead ends: 7295 [2018-11-07 11:37:27,184 INFO L226 Difference]: Without dead ends: 3195 [2018-11-07 11:37:27,220 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 11:37:27,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-11-07 11:37:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3193. [2018-11-07 11:37:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3193 states. [2018-11-07 11:37:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4458 transitions. [2018-11-07 11:37:27,308 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4458 transitions. Word has length 103 [2018-11-07 11:37:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:27,308 INFO L480 AbstractCegarLoop]: Abstraction has 3193 states and 4458 transitions. [2018-11-07 11:37:27,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:37:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4458 transitions. [2018-11-07 11:37:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 11:37:27,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:27,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:37:27,312 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:27,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1720605675, now seen corresponding path program 1 times [2018-11-07 11:37:27,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:27,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:27,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:27,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:27,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:37:27,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:37:27,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:37:27,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:27,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:37:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:37:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:37:27,559 INFO L87 Difference]: Start difference. First operand 3193 states and 4458 transitions. Second operand 6 states. [2018-11-07 11:37:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:29,722 INFO L93 Difference]: Finished difference Result 7179 states and 10424 transitions. [2018-11-07 11:37:29,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:37:29,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 11:37:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:29,753 INFO L225 Difference]: With dead ends: 7179 [2018-11-07 11:37:29,754 INFO L226 Difference]: Without dead ends: 3992 [2018-11-07 11:37:29,774 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:37:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2018-11-07 11:37:29,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3939. [2018-11-07 11:37:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-07 11:37:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5317 transitions. [2018-11-07 11:37:29,913 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5317 transitions. Word has length 146 [2018-11-07 11:37:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:29,914 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5317 transitions. [2018-11-07 11:37:29,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:37:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5317 transitions. [2018-11-07 11:37:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-07 11:37:29,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:29,944 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:37:29,944 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:29,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:29,945 INFO L82 PathProgramCache]: Analyzing trace with hash -631018936, now seen corresponding path program 1 times [2018-11-07 11:37:29,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:29,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:29,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:29,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:29,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 112 proven. 76 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-11-07 11:37:30,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:37:30,725 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:37:30,726 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-07 11:37:30,729 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [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], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [706], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 11:37:30,787 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:37:30,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:37:31,409 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 11:37:33,417 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 11:37:33,419 INFO L272 AbstractInterpreter]: Visited 133 different actions 784 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 11:37:33,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:33,454 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 11:37:33,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:37:33,454 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 11:37:33,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:33,474 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 11:37:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:33,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 11:37:34,075 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 11:37:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 11:37:35,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 11:37:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-07 11:37:36,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 11:37:36,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2018-11-07 11:37:36,454 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 11:37:36,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 11:37:36,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 11:37:36,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-11-07 11:37:36,458 INFO L87 Difference]: Start difference. First operand 3939 states and 5317 transitions. Second operand 13 states. [2018-11-07 11:37:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:37:50,412 INFO L93 Difference]: Finished difference Result 11250 states and 20728 transitions. [2018-11-07 11:37:50,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-11-07 11:37:50,413 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 335 [2018-11-07 11:37:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:37:50,501 INFO L225 Difference]: With dead ends: 11250 [2018-11-07 11:37:50,502 INFO L226 Difference]: Without dead ends: 7317 [2018-11-07 11:37:50,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 663 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1304, Invalid=5836, Unknown=0, NotChecked=0, Total=7140 [2018-11-07 11:37:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7317 states. [2018-11-07 11:37:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7317 to 6503. [2018-11-07 11:37:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6503 states. [2018-11-07 11:37:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 8748 transitions. [2018-11-07 11:37:51,004 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 8748 transitions. Word has length 335 [2018-11-07 11:37:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:37:51,005 INFO L480 AbstractCegarLoop]: Abstraction has 6503 states and 8748 transitions. [2018-11-07 11:37:51,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 11:37:51,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 8748 transitions. [2018-11-07 11:37:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-07 11:37:51,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:37:51,085 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:37:51,086 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:37:51,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:51,087 INFO L82 PathProgramCache]: Analyzing trace with hash -396830602, now seen corresponding path program 1 times [2018-11-07 11:37:51,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:37:51,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:51,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:37:51,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:37:51,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:37:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:37:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 195 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 11:37:51,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:37:51,930 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:37:51,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-11-07 11:37:51,931 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [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], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [706], [707], [711], [715], [719], [723], [727], [730], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 11:37:51,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:37:51,946 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:37:52,347 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:37:52,347 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 11:37:52,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:37:52,386 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:37:53,658 INFO L227 lantSequenceWeakener]: Weakened 329 states. On average, predicates are now at 72.86% of their original sizes. [2018-11-07 11:37:53,658 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:37:58,082 INFO L415 sIntCurrentIteration]: We unified 356 AI predicates to 356 [2018-11-07 11:37:58,082 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:37:58,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:37:58,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 11:37:58,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:37:58,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 11:37:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 11:37:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 11:37:58,085 INFO L87 Difference]: Start difference. First operand 6503 states and 8748 transitions. Second operand 11 states. [2018-11-07 11:38:02,421 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