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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:06:04,474 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:06:04,476 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:06:04,488 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:06:04,489 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:06:04,490 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:06:04,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:06:04,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:06:04,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:06:04,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:06:04,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:06:04,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:06:04,498 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:06:04,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:06:04,500 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:06:04,501 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:06:04,502 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:06:04,504 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:06:04,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:06:04,510 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:06:04,511 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:06:04,516 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:06:04,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:06:04,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:06:04,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:06:04,523 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:06:04,524 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:06:04,526 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:06:04,527 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:06:04,528 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:06:04,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:06:04,531 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:06:04,531 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:06:04,531 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:06:04,534 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:06:04,534 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:06:04,535 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:06:04,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:06:04,559 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:06:04,560 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:06:04,560 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:06:04,561 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:06:04,561 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:06:04,561 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:06:04,562 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:06:04,563 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:06:04,563 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:06:04,564 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:06:04,565 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:06:04,565 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:06:04,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:06:04,565 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:06:04,565 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:06:04,566 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:06:04,566 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:06:04,566 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:06:04,566 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:06:04,566 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:06:04,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:06:04,567 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:06:04,567 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:06:04,567 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:06:04,567 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:06:04,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:06:04,568 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:06:04,568 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:06:04,568 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:06:04,568 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:06:04,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:06:04,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:06:04,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:06:04,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:06:04,645 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:06:04,646 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-11-07 09:06:04,706 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c22f57b2/5676ab366d9b44749fa018cf2ab0f72d/FLAG882b963a9 [2018-11-07 09:06:05,398 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:06:05,401 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-11-07 09:06:05,424 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c22f57b2/5676ab366d9b44749fa018cf2ab0f72d/FLAG882b963a9 [2018-11-07 09:06:05,443 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c22f57b2/5676ab366d9b44749fa018cf2ab0f72d [2018-11-07 09:06:05,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:06:05,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:06:05,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:05,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:06:05,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:06:05,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:05" (1/1) ... [2018-11-07 09:06:05,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304470ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:05, skipping insertion in model container [2018-11-07 09:06:05,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:05" (1/1) ... [2018-11-07 09:06:05,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:06:05,604 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:06:06,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:06,453 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:06:06,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:06,777 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:06:06,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06 WrapperNode [2018-11-07 09:06:06,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:06,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:06,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:06:06,779 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:06:06,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:06,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:06,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:06,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:06:06,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:06:07,000 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:06:07,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (1/1) ... [2018-11-07 09:06:07,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:06:07,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:06:07,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:06:07,161 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:06:07,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (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 09:06:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:06:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:06:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:06:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:06:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:06:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:06:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:06:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:06:07,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:06:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:06:07,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:06:13,220 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:06:13,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:06:13 BoogieIcfgContainer [2018-11-07 09:06:13,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:06:13,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:06:13,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:06:13,225 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:06:13,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:06:05" (1/3) ... [2018-11-07 09:06:13,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c22ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:06:13, skipping insertion in model container [2018-11-07 09:06:13,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:06" (2/3) ... [2018-11-07 09:06:13,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c22ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:06:13, skipping insertion in model container [2018-11-07 09:06:13,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:06:13" (3/3) ... [2018-11-07 09:06:13,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17_true-unreach-call.c [2018-11-07 09:06:13,239 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:06:13,250 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:06:13,268 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:06:13,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:06:13,310 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:06:13,310 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:06:13,310 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:06:13,311 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:06:13,311 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:06:13,311 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:06:13,311 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:06:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:06:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-07 09:06:13,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:13,356 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:13,358 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:13,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash -466459612, now seen corresponding path program 1 times [2018-11-07 09:06:13,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:13,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:13,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:13,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:13,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:13,947 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:06:14,020 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 09:06:14,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:14,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:06:14,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:14,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:06:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:06:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:14,076 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:06:20,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:20,998 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-11-07 09:06:20,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:06:20,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-11-07 09:06:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:21,025 INFO L225 Difference]: With dead ends: 1514 [2018-11-07 09:06:21,025 INFO L226 Difference]: Without dead ends: 1070 [2018-11-07 09:06:21,038 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 09:06:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-11-07 09:06:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-11-07 09:06:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-11-07 09:06:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-11-07 09:06:21,164 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 70 [2018-11-07 09:06:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:21,165 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-11-07 09:06:21,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:06:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-11-07 09:06:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 09:06:21,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:21,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:06:21,183 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:21,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:21,184 INFO L82 PathProgramCache]: Analyzing trace with hash 608103471, now seen corresponding path program 1 times [2018-11-07 09:06:21,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:21,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:21,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:21,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:21,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:21,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:21,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:06:21,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:21,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:06:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:06:21,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:21,470 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-11-07 09:06:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:27,124 INFO L93 Difference]: Finished difference Result 3989 states and 6445 transitions. [2018-11-07 09:06:27,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:06:27,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-07 09:06:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:27,152 INFO L225 Difference]: With dead ends: 3989 [2018-11-07 09:06:27,152 INFO L226 Difference]: Without dead ends: 2927 [2018-11-07 09:06:27,164 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 09:06:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2018-11-07 09:06:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2925. [2018-11-07 09:06:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 09:06:27,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4174 transitions. [2018-11-07 09:06:27,288 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4174 transitions. Word has length 140 [2018-11-07 09:06:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:27,289 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4174 transitions. [2018-11-07 09:06:27,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:06:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4174 transitions. [2018-11-07 09:06:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 09:06:27,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:27,297 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 09:06:27,297 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:27,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:27,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1294046763, now seen corresponding path program 1 times [2018-11-07 09:06:27,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:27,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:27,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:27,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:27,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 09:06:27,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:27,781 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:27,782 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-07 09:06:27,784 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:06:27,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:27,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:28,997 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:06:29,000 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:06:29,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:29,045 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:06:29,615 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 84.42% of their original sizes. [2018-11-07 09:06:29,616 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:06:30,223 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-07 09:06:30,223 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:06:30,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:06:30,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 09:06:30,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:30,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:06:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:06:30,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:06:30,229 INFO L87 Difference]: Start difference. First operand 2925 states and 4174 transitions. Second operand 9 states. [2018-11-07 09:07:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:00,796 INFO L93 Difference]: Finished difference Result 6786 states and 9432 transitions. [2018-11-07 09:07:00,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:07:00,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-11-07 09:07:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:00,817 INFO L225 Difference]: With dead ends: 6786 [2018-11-07 09:07:00,818 INFO L226 Difference]: Without dead ends: 3867 [2018-11-07 09:07:00,830 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:07:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2018-11-07 09:07:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3864. [2018-11-07 09:07:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2018-11-07 09:07:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5171 transitions. [2018-11-07 09:07:00,942 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5171 transitions. Word has length 250 [2018-11-07 09:07:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:00,943 INFO L480 AbstractCegarLoop]: Abstraction has 3864 states and 5171 transitions. [2018-11-07 09:07:00,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:07:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5171 transitions. [2018-11-07 09:07:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-11-07 09:07:00,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:00,957 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, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:00,957 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:00,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:00,958 INFO L82 PathProgramCache]: Analyzing trace with hash -524817064, now seen corresponding path program 1 times [2018-11-07 09:07:00,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:00,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:00,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:07:01,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:01,380 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:01,380 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 451 with the following transitions: [2018-11-07 09:07:01,381 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:01,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:01,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:01,972 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:01,972 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:07:01,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:01,980 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:01,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:01,980 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 09:07:02,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:02,134 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:02,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:07:02,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:07:03,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:07:03,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:07:03,501 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:07:03,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:07:03,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:07:03,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:07:03,503 INFO L87 Difference]: Start difference. First operand 3864 states and 5171 transitions. Second operand 9 states. [2018-11-07 09:07:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:23,237 INFO L93 Difference]: Finished difference Result 17467 states and 25972 transitions. [2018-11-07 09:07:23,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-07 09:07:23,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 450 [2018-11-07 09:07:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:23,334 INFO L225 Difference]: With dead ends: 17467 [2018-11-07 09:07:23,334 INFO L226 Difference]: Without dead ends: 13917 [2018-11-07 09:07:23,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 934 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=542, Invalid=2214, Unknown=0, NotChecked=0, Total=2756 [2018-11-07 09:07:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13917 states. [2018-11-07 09:07:23,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13917 to 13347. [2018-11-07 09:07:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13347 states. [2018-11-07 09:07:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13347 states to 13347 states and 16421 transitions. [2018-11-07 09:07:23,807 INFO L78 Accepts]: Start accepts. Automaton has 13347 states and 16421 transitions. Word has length 450 [2018-11-07 09:07:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:23,808 INFO L480 AbstractCegarLoop]: Abstraction has 13347 states and 16421 transitions. [2018-11-07 09:07:23,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:07:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13347 states and 16421 transitions. [2018-11-07 09:07:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-11-07 09:07:23,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:23,838 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:23,839 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:23,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:23,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1125948549, now seen corresponding path program 1 times [2018-11-07 09:07:23,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:23,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:23,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:23,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:23,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-07 09:07:24,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:24,557 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:24,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 500 with the following transitions: [2018-11-07 09:07:24,558 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:24,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:24,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:25,854 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:25,854 INFO L272 AbstractInterpreter]: Visited 285 different actions 849 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:07:25,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:25,892 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:25,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:25,892 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:07:25,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:25,905 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:26,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-07 09:07:26,292 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-11-07 09:07:27,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:07:27,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-11-07 09:07:27,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:27,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:07:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:07:27,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:07:27,506 INFO L87 Difference]: Start difference. First operand 13347 states and 16421 transitions. Second operand 5 states. [2018-11-07 09:07:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:30,737 INFO L93 Difference]: Finished difference Result 26570 states and 34311 transitions. [2018-11-07 09:07:30,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:07:30,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2018-11-07 09:07:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:30,801 INFO L225 Difference]: With dead ends: 26570 [2018-11-07 09:07:30,801 INFO L226 Difference]: Without dead ends: 15252 [2018-11-07 09:07:30,845 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 997 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:07:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15252 states. [2018-11-07 09:07:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15252 to 15198. [2018-11-07 09:07:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15198 states. [2018-11-07 09:07:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15198 states to 15198 states and 18007 transitions. [2018-11-07 09:07:31,203 INFO L78 Accepts]: Start accepts. Automaton has 15198 states and 18007 transitions. Word has length 499 [2018-11-07 09:07:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:31,204 INFO L480 AbstractCegarLoop]: Abstraction has 15198 states and 18007 transitions. [2018-11-07 09:07:31,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:07:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 15198 states and 18007 transitions. [2018-11-07 09:07:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-11-07 09:07:31,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:31,240 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, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:31,240 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:31,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash 419516890, now seen corresponding path program 1 times [2018-11-07 09:07:31,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:31,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:31,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:31,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:31,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-07 09:07:31,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:31,917 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:31,918 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 516 with the following transitions: [2018-11-07 09:07:31,918 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [636], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:31,925 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:31,925 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:35,474 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:35,475 INFO L272 AbstractInterpreter]: Visited 287 different actions 1137 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:07:35,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:35,480 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:35,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:35,480 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:07:35,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:35,489 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:35,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-11-07 09:07:35,753 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-07 09:07:35,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:07:35,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-11-07 09:07:35,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:35,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:07:35,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:07:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:07:35,907 INFO L87 Difference]: Start difference. First operand 15198 states and 18007 transitions. Second operand 3 states. [2018-11-07 09:07:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:39,744 INFO L93 Difference]: Finished difference Result 39574 states and 48577 transitions. [2018-11-07 09:07:39,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:07:39,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 515 [2018-11-07 09:07:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:39,837 INFO L225 Difference]: With dead ends: 39574 [2018-11-07 09:07:39,837 INFO L226 Difference]: Without dead ends: 24690 [2018-11-07 09:07:39,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:07:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24690 states. [2018-11-07 09:07:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24690 to 24342. [2018-11-07 09:07:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24342 states. [2018-11-07 09:07:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24342 states to 24342 states and 29537 transitions. [2018-11-07 09:07:40,393 INFO L78 Accepts]: Start accepts. Automaton has 24342 states and 29537 transitions. Word has length 515 [2018-11-07 09:07:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:40,394 INFO L480 AbstractCegarLoop]: Abstraction has 24342 states and 29537 transitions. [2018-11-07 09:07:40,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:07:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24342 states and 29537 transitions. [2018-11-07 09:07:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-11-07 09:07:40,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:40,444 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, 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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:40,445 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:40,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:40,445 INFO L82 PathProgramCache]: Analyzing trace with hash -200635057, now seen corresponding path program 1 times [2018-11-07 09:07:40,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:40,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:40,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:40,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:40,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:41,075 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 09:07:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-11-07 09:07:41,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:41,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:07:41,256 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:41,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:07:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:07:41,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:41,258 INFO L87 Difference]: Start difference. First operand 24342 states and 29537 transitions. Second operand 4 states. [2018-11-07 09:07:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:47,171 INFO L93 Difference]: Finished difference Result 57820 states and 72337 transitions. [2018-11-07 09:07:47,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:07:47,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 521 [2018-11-07 09:07:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:47,532 INFO L225 Difference]: With dead ends: 57820 [2018-11-07 09:07:47,532 INFO L226 Difference]: Without dead ends: 35785 [2018-11-07 09:07:47,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35785 states. [2018-11-07 09:07:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35785 to 35759. [2018-11-07 09:07:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35759 states. [2018-11-07 09:07:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35759 states to 35759 states and 42330 transitions. [2018-11-07 09:07:48,223 INFO L78 Accepts]: Start accepts. Automaton has 35759 states and 42330 transitions. Word has length 521 [2018-11-07 09:07:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:48,224 INFO L480 AbstractCegarLoop]: Abstraction has 35759 states and 42330 transitions. [2018-11-07 09:07:48,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:07:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35759 states and 42330 transitions. [2018-11-07 09:07:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-11-07 09:07:48,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:48,276 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:48,276 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:48,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash -309560524, now seen corresponding path program 1 times [2018-11-07 09:07:48,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:48,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:48,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:48,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:48,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 292 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 09:07:49,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:49,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:49,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 530 with the following transitions: [2018-11-07 09:07:49,122 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:49,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:49,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:50,024 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:50,024 INFO L272 AbstractInterpreter]: Visited 285 different actions 1131 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:07:50,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:50,031 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:50,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:50,031 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:07:50,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:50,044 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:50,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 09:07:50,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:51,057 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:07:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 292 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 09:07:51,642 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:07:51,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:07:51,642 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:07:51,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:07:51,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:07:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:07:51,644 INFO L87 Difference]: Start difference. First operand 35759 states and 42330 transitions. Second operand 9 states. [2018-11-07 09:07:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:59,237 INFO L93 Difference]: Finished difference Result 74719 states and 94922 transitions. [2018-11-07 09:07:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 09:07:59,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 529 [2018-11-07 09:07:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:59,478 INFO L225 Difference]: With dead ends: 74719 [2018-11-07 09:07:59,478 INFO L226 Difference]: Without dead ends: 41267 [2018-11-07 09:07:59,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1067 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-11-07 09:07:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41267 states. [2018-11-07 09:08:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41267 to 40162. [2018-11-07 09:08:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40162 states. [2018-11-07 09:08:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40162 states to 40162 states and 49472 transitions. [2018-11-07 09:08:00,711 INFO L78 Accepts]: Start accepts. Automaton has 40162 states and 49472 transitions. Word has length 529 [2018-11-07 09:08:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:00,712 INFO L480 AbstractCegarLoop]: Abstraction has 40162 states and 49472 transitions. [2018-11-07 09:08:00,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:08:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 40162 states and 49472 transitions. [2018-11-07 09:08:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-11-07 09:08:00,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:00,752 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:00,752 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:00,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1921062102, now seen corresponding path program 1 times [2018-11-07 09:08:00,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:00,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:00,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:00,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:00,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 560 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-11-07 09:08:01,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:01,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:01,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-11-07 09:08:01,582 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:01,586 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:01,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:02,810 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:02,811 INFO L272 AbstractInterpreter]: Visited 214 different actions 1049 times. Merged at 9 different actions 34 times. Never widened. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:02,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:02,819 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:02,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:02,819 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:02,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:02,830 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:02,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2018-11-07 09:08:03,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2018-11-07 09:08:03,512 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:08:03,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-07 09:08:03,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:03,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:08:03,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:08:03,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:08:03,514 INFO L87 Difference]: Start difference. First operand 40162 states and 49472 transitions. Second operand 3 states. [2018-11-07 09:08:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:06,108 INFO L93 Difference]: Finished difference Result 78326 states and 96982 transitions. [2018-11-07 09:08:06,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:08:06,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 577 [2018-11-07 09:08:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:06,321 INFO L225 Difference]: With dead ends: 78326 [2018-11-07 09:08:06,322 INFO L226 Difference]: Without dead ends: 40471 [2018-11-07 09:08:06,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1159 GetRequests, 1153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:08:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40471 states. [2018-11-07 09:08:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40471 to 40158. [2018-11-07 09:08:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40158 states. [2018-11-07 09:08:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40158 states to 40158 states and 49442 transitions. [2018-11-07 09:08:07,579 INFO L78 Accepts]: Start accepts. Automaton has 40158 states and 49442 transitions. Word has length 577 [2018-11-07 09:08:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:07,580 INFO L480 AbstractCegarLoop]: Abstraction has 40158 states and 49442 transitions. [2018-11-07 09:08:07,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:08:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40158 states and 49442 transitions. [2018-11-07 09:08:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-11-07 09:08:07,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:07,679 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:08:07,679 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:07,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:07,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1864949519, now seen corresponding path program 1 times [2018-11-07 09:08:07,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:07,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:07,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:07,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:07,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:09,419 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 09:08:09,861 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 09:08:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 356 proven. 447 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:08:10,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:10,666 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:10,667 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 655 with the following transitions: [2018-11-07 09:08:10,667 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1210], [1214], [1217], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:10,670 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:10,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:13,932 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:13,932 INFO L272 AbstractInterpreter]: Visited 214 different actions 1062 times. Merged at 9 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:08:13,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:13,942 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:13,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:13,942 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:13,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:13,952 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:14,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 644 proven. 41 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-11-07 09:08:14,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:15,022 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-07 09:08:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 267 proven. 536 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:08:15,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:08:15,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-11-07 09:08:15,886 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:08:15,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:08:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:08:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:08:15,887 INFO L87 Difference]: Start difference. First operand 40158 states and 49442 transitions. Second operand 13 states. [2018-11-07 09:08:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:28,101 INFO L93 Difference]: Finished difference Result 99421 states and 123951 transitions. [2018-11-07 09:08:28,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 09:08:28,101 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 654 [2018-11-07 09:08:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:28,393 INFO L225 Difference]: With dead ends: 99421 [2018-11-07 09:08:28,393 INFO L226 Difference]: Without dead ends: 55566 [2018-11-07 09:08:28,612 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1324 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 09:08:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55566 states. [2018-11-07 09:08:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55566 to 54001. [2018-11-07 09:08:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54001 states. [2018-11-07 09:08:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54001 states to 54001 states and 66015 transitions. [2018-11-07 09:08:30,012 INFO L78 Accepts]: Start accepts. Automaton has 54001 states and 66015 transitions. Word has length 654 [2018-11-07 09:08:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:30,012 INFO L480 AbstractCegarLoop]: Abstraction has 54001 states and 66015 transitions. [2018-11-07 09:08:30,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 09:08:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54001 states and 66015 transitions. [2018-11-07 09:08:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2018-11-07 09:08:30,154 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:30,154 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:08:30,155 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:30,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:30,155 INFO L82 PathProgramCache]: Analyzing trace with hash -59415894, now seen corresponding path program 1 times [2018-11-07 09:08:30,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:30,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:30,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:30,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:30,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:08:30,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:30,983 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:30,983 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 708 with the following transitions: [2018-11-07 09:08:30,984 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1440], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:30,988 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:30,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:35,234 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:35,235 INFO L272 AbstractInterpreter]: Visited 285 different actions 851 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:08:35,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:35,243 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:35,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:35,243 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:35,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:35,252 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:35,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:08:35,775 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:08:36,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:08:36,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:08:36,260 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:08:36,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:08:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:08:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:08:36,262 INFO L87 Difference]: Start difference. First operand 54001 states and 66015 transitions. Second operand 9 states. [2018-11-07 09:08:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:44,066 INFO L93 Difference]: Finished difference Result 114203 states and 150173 transitions. [2018-11-07 09:08:44,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 09:08:44,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 707 [2018-11-07 09:08:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:44,436 INFO L225 Difference]: With dead ends: 114203 [2018-11-07 09:08:44,437 INFO L226 Difference]: Without dead ends: 64481 [2018-11-07 09:08:44,724 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1420 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-07 09:08:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64481 states. [2018-11-07 09:08:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64481 to 64413. [2018-11-07 09:08:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64413 states. [2018-11-07 09:08:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64413 states to 64413 states and 83133 transitions. [2018-11-07 09:08:46,372 INFO L78 Accepts]: Start accepts. Automaton has 64413 states and 83133 transitions. Word has length 707 [2018-11-07 09:08:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:46,373 INFO L480 AbstractCegarLoop]: Abstraction has 64413 states and 83133 transitions. [2018-11-07 09:08:46,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:08:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 64413 states and 83133 transitions. [2018-11-07 09:08:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-11-07 09:08:46,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:46,425 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:08:46,425 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:46,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1427960617, now seen corresponding path program 1 times [2018-11-07 09:08:46,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:46,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:46,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:46,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:46,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-11-07 09:08:47,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:08:47,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:08:47,314 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:08:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:08:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:08:47,316 INFO L87 Difference]: Start difference. First operand 64413 states and 83133 transitions. Second operand 5 states. [2018-11-07 09:08:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:54,188 INFO L93 Difference]: Finished difference Result 158331 states and 207058 transitions. [2018-11-07 09:08:54,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 09:08:54,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 710 [2018-11-07 09:08:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:54,814 INFO L225 Difference]: With dead ends: 158331 [2018-11-07 09:08:54,814 INFO L226 Difference]: Without dead ends: 94232 [2018-11-07 09:08:56,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:08:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94232 states. [2018-11-07 09:08:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94232 to 92858. [2018-11-07 09:08:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92858 states. [2018-11-07 09:08:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92858 states to 92858 states and 118929 transitions. [2018-11-07 09:08:58,286 INFO L78 Accepts]: Start accepts. Automaton has 92858 states and 118929 transitions. Word has length 710 [2018-11-07 09:08:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:58,287 INFO L480 AbstractCegarLoop]: Abstraction has 92858 states and 118929 transitions. [2018-11-07 09:08:58,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:08:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 92858 states and 118929 transitions. [2018-11-07 09:08:58,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-11-07 09:08:58,325 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:58,326 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:08:58,326 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:58,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash 899190773, now seen corresponding path program 1 times [2018-11-07 09:08:58,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:58,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:58,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:58,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:58,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2018-11-07 09:08:59,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:08:59,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:08:59,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:59,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:08:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:08:59,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:08:59,543 INFO L87 Difference]: Start difference. First operand 92858 states and 118929 transitions. Second operand 3 states. [2018-11-07 09:09:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:05,289 INFO L93 Difference]: Finished difference Result 182823 states and 237614 transitions. [2018-11-07 09:09:05,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:09:05,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 715 [2018-11-07 09:09:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:05,847 INFO L225 Difference]: With dead ends: 182823 [2018-11-07 09:09:05,848 INFO L226 Difference]: Without dead ends: 94906 [2018-11-07 09:09:06,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:09:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94906 states. [2018-11-07 09:09:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94906 to 94067. [2018-11-07 09:09:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94067 states. [2018-11-07 09:09:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94067 states to 94067 states and 117875 transitions. [2018-11-07 09:09:09,676 INFO L78 Accepts]: Start accepts. Automaton has 94067 states and 117875 transitions. Word has length 715 [2018-11-07 09:09:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:09,677 INFO L480 AbstractCegarLoop]: Abstraction has 94067 states and 117875 transitions. [2018-11-07 09:09:09,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:09:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 94067 states and 117875 transitions. [2018-11-07 09:09:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2018-11-07 09:09:09,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:09,713 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:09,714 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:09,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash -632255730, now seen corresponding path program 1 times [2018-11-07 09:09:09,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:09,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:09,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:09,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:10,950 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 09:09:11,382 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 09:09:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 441 proven. 532 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:09:12,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:12,729 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:12,729 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 740 with the following transitions: [2018-11-07 09:09:12,729 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1210], [1214], [1217], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:12,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:12,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:19,067 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:19,067 INFO L272 AbstractInterpreter]: Visited 214 different actions 1066 times. Merged at 9 different actions 43 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:19,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:19,074 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:19,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:19,074 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:19,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:19,084 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:19,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 729 proven. 126 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-11-07 09:09:20,130 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 267 proven. 706 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:09:21,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:21,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-11-07 09:09:21,456 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:21,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:09:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:09:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:09:21,458 INFO L87 Difference]: Start difference. First operand 94067 states and 117875 transitions. Second operand 13 states. [2018-11-07 09:09:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:35,695 INFO L93 Difference]: Finished difference Result 197043 states and 246836 transitions. [2018-11-07 09:09:35,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 09:09:35,695 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 739 [2018-11-07 09:09:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:36,224 INFO L225 Difference]: With dead ends: 197043 [2018-11-07 09:09:36,224 INFO L226 Difference]: Without dead ends: 98299 [2018-11-07 09:09:36,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1493 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 09:09:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98299 states. [2018-11-07 09:09:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98299 to 97891. [2018-11-07 09:09:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97891 states. [2018-11-07 09:09:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97891 states to 97891 states and 121505 transitions. [2018-11-07 09:09:39,488 INFO L78 Accepts]: Start accepts. Automaton has 97891 states and 121505 transitions. Word has length 739 [2018-11-07 09:09:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:39,489 INFO L480 AbstractCegarLoop]: Abstraction has 97891 states and 121505 transitions. [2018-11-07 09:09:39,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 09:09:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 97891 states and 121505 transitions. [2018-11-07 09:09:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2018-11-07 09:09:39,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:39,544 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:39,544 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:39,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1469111637, now seen corresponding path program 1 times [2018-11-07 09:09:39,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:39,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:39,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:39,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-11-07 09:09:40,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:40,468 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:40,468 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 786 with the following transitions: [2018-11-07 09:09:40,469 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [774], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:40,473 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:40,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:09:44,357 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:09:44,358 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:09:44,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:09:44,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:44,359 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:44,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:44,367 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:44,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:44,607 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:09:44,808 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:44,808 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:09:44,814 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:09:44,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:09:44 BoogieIcfgContainer [2018-11-07 09:09:44,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:09:44,816 INFO L168 Benchmark]: Toolchain (without parser) took 219359.32 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,819 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:09:44,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1316.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,820 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,821 INFO L168 Benchmark]: Boogie Preprocessor took 161.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,825 INFO L168 Benchmark]: RCFGBuilder took 6059.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.5 MB). Peak memory consumption was 280.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,825 INFO L168 Benchmark]: TraceAbstraction took 211593.14 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -895.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:44,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1316.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -908.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6059.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 280.5 MB). Peak memory consumption was 280.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211593.14 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -895.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was analyzing trace of length 786 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 139.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4527 SDtfs, 28551 SDslu, 4159 SDs, 0 SdLazy, 49956 SolverSat, 9456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 9904 GetRequests, 9676 SyntacticMatches, 15 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1898 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97891occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.6s AbstIntTime, 10 AbstIntIterations, 1 AbstIntStrong, 0.9966889695227193 AbsIntWeakeningRatio, 0.10441767068273092 AbsIntAvgWeakeningVarsNumRemoved, 14.72289156626506 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 6677 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 11746 NumberOfCodeBlocks, 11746 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 16386 ConstructedInterpolants, 0 QuantifiedInterpolants, 37703173 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6557 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 14919/17658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown