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/Problem03_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:18:06,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:18:06,292 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:18:06,309 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:18:06,309 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:18:06,311 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:18:06,313 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:18:06,316 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:18:06,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:18:06,319 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:18:06,320 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:18:06,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:18:06,323 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:18:06,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:18:06,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:18:06,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:18:06,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:18:06,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:18:06,339 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:18:06,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:18:06,342 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:18:06,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:18:06,345 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:18:06,346 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:18:06,346 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:18:06,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:18:06,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:18:06,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:18:06,349 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:18:06,350 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:18:06,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:18:06,352 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:18:06,352 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:18:06,352 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:18:06,355 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:18:06,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:18:06,356 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 07:18:06,381 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:18:06,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:18:06,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:18:06,383 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:18:06,383 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:18:06,383 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:18:06,384 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:18:06,384 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:18:06,384 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:18:06,384 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:18:06,384 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:18:06,385 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:18:06,385 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:18:06,385 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:18:06,387 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:18:06,387 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:18:06,387 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:18:06,387 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:18:06,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:18:06,388 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:18:06,388 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:18:06,388 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:18:06,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:18:06,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:18:06,390 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:18:06,390 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:18:06,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:18:06,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:18:06,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:18:06,391 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:18:06,391 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:18:06,392 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:18:06,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:18:06,392 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:18:06,392 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:18:06,392 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:18:06,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:18:06,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:18:06,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:18:06,485 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:18:06,485 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:18:06,486 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-11-07 07:18:06,553 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775e5c5bf/bb00513b53d943e9988d787a4576325a/FLAG2c3417bc5 [2018-11-07 07:18:07,238 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:18:07,239 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-11-07 07:18:07,261 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775e5c5bf/bb00513b53d943e9988d787a4576325a/FLAG2c3417bc5 [2018-11-07 07:18:07,281 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775e5c5bf/bb00513b53d943e9988d787a4576325a [2018-11-07 07:18:07,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:18:07,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:18:07,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:18:07,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:18:07,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:18:07,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:18:07" (1/1) ... [2018-11-07 07:18:07,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fca1d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:07, skipping insertion in model container [2018-11-07 07:18:07,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:18:07" (1/1) ... [2018-11-07 07:18:07,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:18:07,433 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:18:08,299 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:18:08,306 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:18:08,590 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:18:08,616 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:18:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08 WrapperNode [2018-11-07 07:18:08,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:18:08,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:18:08,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:18:08,619 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:18:08,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:18:08,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:18:08,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:18:08,831 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:18:08,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (1/1) ... [2018-11-07 07:18:08,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:18:08,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:18:08,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:18:08,978 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:18:08,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (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 07:18:09,048 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:18:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:18:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:18:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:18:09,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:18:09,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:18:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:18:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:18:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:18:14,332 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:18:14,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:18:14 BoogieIcfgContainer [2018-11-07 07:18:14,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:18:14,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:18:14,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:18:14,339 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:18:14,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:18:07" (1/3) ... [2018-11-07 07:18:14,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e058829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:18:14, skipping insertion in model container [2018-11-07 07:18:14,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:18:08" (2/3) ... [2018-11-07 07:18:14,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e058829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:18:14, skipping insertion in model container [2018-11-07 07:18:14,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:18:14" (3/3) ... [2018-11-07 07:18:14,343 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label48_true-unreach-call.c [2018-11-07 07:18:14,355 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:18:14,367 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:18:14,388 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:18:14,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:18:14,449 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:18:14,449 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:18:14,449 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:18:14,449 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:18:14,450 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:18:14,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:18:14,450 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:18:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:18:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 07:18:14,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:14,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:14,532 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:14,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1967383007, now seen corresponding path program 1 times [2018-11-07 07:18:14,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:14,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:14,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:14,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:14,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:15,553 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:18:15,910 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 07:18:15,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:15,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:18:15,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:15,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:18:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:18:15,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:18:15,934 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 07:18:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:19,340 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-11-07 07:18:19,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:18:19,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-11-07 07:18:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:19,371 INFO L225 Difference]: With dead ends: 1058 [2018-11-07 07:18:19,372 INFO L226 Difference]: Without dead ends: 740 [2018-11-07 07:18:19,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 07:18:19,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-11-07 07:18:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-11-07 07:18:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-07 07:18:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-11-07 07:18:19,472 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 190 [2018-11-07 07:18:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:19,473 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-11-07 07:18:19,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:18:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-11-07 07:18:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-07 07:18:19,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:19,482 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:18:19,482 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:19,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash 805361829, now seen corresponding path program 1 times [2018-11-07 07:18:19,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:19,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:19,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:19,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:19,485 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:19,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:19,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:18:19,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:19,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:18:19,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:18:19,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:19,895 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-11-07 07:18:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:21,892 INFO L93 Difference]: Finished difference Result 1473 states and 2531 transitions. [2018-11-07 07:18:21,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:18:21,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-11-07 07:18:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:21,901 INFO L225 Difference]: With dead ends: 1473 [2018-11-07 07:18:21,901 INFO L226 Difference]: Without dead ends: 954 [2018-11-07 07:18:21,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-11-07 07:18:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2018-11-07 07:18:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-11-07 07:18:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1506 transitions. [2018-11-07 07:18:21,960 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1506 transitions. Word has length 203 [2018-11-07 07:18:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:21,961 INFO L480 AbstractCegarLoop]: Abstraction has 953 states and 1506 transitions. [2018-11-07 07:18:21,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:18:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1506 transitions. [2018-11-07 07:18:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 07:18:21,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:21,973 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:18:21,973 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:21,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 190939521, now seen corresponding path program 1 times [2018-11-07 07:18:21,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:21,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:21,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:21,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:21,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:22,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:22,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:18:22,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:22,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:18:22,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:18:22,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:22,332 INFO L87 Difference]: Start difference. First operand 953 states and 1506 transitions. Second operand 3 states. [2018-11-07 07:18:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:25,452 INFO L93 Difference]: Finished difference Result 2750 states and 4459 transitions. [2018-11-07 07:18:25,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:18:25,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-11-07 07:18:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:25,473 INFO L225 Difference]: With dead ends: 2750 [2018-11-07 07:18:25,473 INFO L226 Difference]: Without dead ends: 1803 [2018-11-07 07:18:25,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:18:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-11-07 07:18:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-11-07 07:18:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-11-07 07:18:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2785 transitions. [2018-11-07 07:18:25,561 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2785 transitions. Word has length 205 [2018-11-07 07:18:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:25,562 INFO L480 AbstractCegarLoop]: Abstraction has 1786 states and 2785 transitions. [2018-11-07 07:18:25,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:18:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2785 transitions. [2018-11-07 07:18:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 07:18:25,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:25,572 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:18:25,573 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:25,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:25,573 INFO L82 PathProgramCache]: Analyzing trace with hash -332724808, now seen corresponding path program 1 times [2018-11-07 07:18:25,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:25,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:25,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:25,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:25,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:25,824 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:18:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:25,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:18:25,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:18:25,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:25,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:18:25,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:18:25,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:18:25,993 INFO L87 Difference]: Start difference. First operand 1786 states and 2785 transitions. Second operand 6 states. [2018-11-07 07:18:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:28,749 INFO L93 Difference]: Finished difference Result 5463 states and 9326 transitions. [2018-11-07 07:18:28,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:18:28,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-11-07 07:18:28,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:28,785 INFO L225 Difference]: With dead ends: 5463 [2018-11-07 07:18:28,785 INFO L226 Difference]: Without dead ends: 3683 [2018-11-07 07:18:28,794 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:18:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-11-07 07:18:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3573. [2018-11-07 07:18:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2018-11-07 07:18:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5686 transitions. [2018-11-07 07:18:28,936 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5686 transitions. Word has length 208 [2018-11-07 07:18:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:28,937 INFO L480 AbstractCegarLoop]: Abstraction has 3573 states and 5686 transitions. [2018-11-07 07:18:28,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:18:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5686 transitions. [2018-11-07 07:18:28,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 07:18:28,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:28,953 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 07:18:28,953 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:28,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1900171544, now seen corresponding path program 1 times [2018-11-07 07:18:28,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:28,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:28,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:28,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:28,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:29,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:29,339 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:29,340 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-07 07:18:29,343 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:29,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:29,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:30,634 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:18:30,636 INFO L272 AbstractInterpreter]: Visited 191 different actions 191 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:18:30,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:30,681 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:18:31,684 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 73.47% of their original sizes. [2018-11-07 07:18:31,684 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:18:32,428 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-07 07:18:32,428 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:18:32,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:18:32,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-07 07:18:32,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:18:32,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 07:18:32,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 07:18:32,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 07:18:32,431 INFO L87 Difference]: Start difference. First operand 3573 states and 5686 transitions. Second operand 13 states. [2018-11-07 07:18:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:18:58,128 INFO L93 Difference]: Finished difference Result 7350 states and 11727 transitions. [2018-11-07 07:18:58,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:18:58,129 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 223 [2018-11-07 07:18:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:18:58,147 INFO L225 Difference]: With dead ends: 7350 [2018-11-07 07:18:58,147 INFO L226 Difference]: Without dead ends: 3783 [2018-11-07 07:18:58,159 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:18:58,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2018-11-07 07:18:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2018-11-07 07:18:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2018-11-07 07:18:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5904 transitions. [2018-11-07 07:18:58,262 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5904 transitions. Word has length 223 [2018-11-07 07:18:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:18:58,263 INFO L480 AbstractCegarLoop]: Abstraction has 3781 states and 5904 transitions. [2018-11-07 07:18:58,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 07:18:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5904 transitions. [2018-11-07 07:18:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 07:18:58,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:18:58,279 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 07:18:58,280 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:18:58,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2107279691, now seen corresponding path program 1 times [2018-11-07 07:18:58,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:18:58,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:58,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:18:58,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:18:58,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:18:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:18:58,550 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:18:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:18:58,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:18:58,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:18:58,801 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-11-07 07:18:58,802 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:18:58,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:18:58,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:18:59,558 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:18:59,558 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:18:59,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:18:59,565 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:19:00,264 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 73.8% of their original sizes. [2018-11-07 07:19:00,265 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:19:00,961 INFO L415 sIntCurrentIteration]: We unified 234 AI predicates to 234 [2018-11-07 07:19:00,962 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:19:00,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:19:00,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-11-07 07:19:00,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:19:00,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:19:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:19:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:19:00,965 INFO L87 Difference]: Start difference. First operand 3781 states and 5904 transitions. Second operand 20 states. [2018-11-07 07:19:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:30,984 INFO L93 Difference]: Finished difference Result 7562 states and 11951 transitions. [2018-11-07 07:19:30,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:19:30,984 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 235 [2018-11-07 07:19:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:31,002 INFO L225 Difference]: With dead ends: 7562 [2018-11-07 07:19:31,002 INFO L226 Difference]: Without dead ends: 3995 [2018-11-07 07:19:31,013 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:19:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2018-11-07 07:19:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3992. [2018-11-07 07:19:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2018-11-07 07:19:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6132 transitions. [2018-11-07 07:19:31,112 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6132 transitions. Word has length 235 [2018-11-07 07:19:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:31,112 INFO L480 AbstractCegarLoop]: Abstraction has 3992 states and 6132 transitions. [2018-11-07 07:19:31,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:19:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6132 transitions. [2018-11-07 07:19:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 07:19:31,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:31,126 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 07:19:31,126 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:31,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 26603704, now seen corresponding path program 1 times [2018-11-07 07:19:31,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:31,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:31,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 07:19:31,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:31,288 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:31,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 07:19:31,288 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:31,295 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:31,295 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:32,321 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:32,321 INFO L272 AbstractInterpreter]: Visited 198 different actions 588 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:19:32,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:32,331 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:32,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:32,332 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 07:19:32,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:32,343 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:32,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 07:19:33,111 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:33,323 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 07:19:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 07:19:34,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:19:34,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-11-07 07:19:34,245 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:19:34,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:19:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:19:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:19:34,247 INFO L87 Difference]: Start difference. First operand 3992 states and 6132 transitions. Second operand 8 states. [2018-11-07 07:19:35,598 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-11-07 07:19:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:40,002 INFO L93 Difference]: Finished difference Result 14862 states and 29181 transitions. [2018-11-07 07:19:40,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 07:19:40,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-11-07 07:19:40,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:40,131 INFO L225 Difference]: With dead ends: 14862 [2018-11-07 07:19:40,131 INFO L226 Difference]: Without dead ends: 11295 [2018-11-07 07:19:40,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:19:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2018-11-07 07:19:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 11055. [2018-11-07 07:19:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11055 states. [2018-11-07 07:19:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11055 states to 11055 states and 18460 transitions. [2018-11-07 07:19:40,699 INFO L78 Accepts]: Start accepts. Automaton has 11055 states and 18460 transitions. Word has length 241 [2018-11-07 07:19:40,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:40,699 INFO L480 AbstractCegarLoop]: Abstraction has 11055 states and 18460 transitions. [2018-11-07 07:19:40,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:19:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11055 states and 18460 transitions. [2018-11-07 07:19:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 07:19:40,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:40,764 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-07 07:19:40,764 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:40,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1105756810, now seen corresponding path program 1 times [2018-11-07 07:19:40,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:40,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:40,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:40,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:40,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 90 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-07 07:19:41,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:41,280 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:41,280 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 07:19:41,281 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:41,289 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:41,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:42,875 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:42,875 INFO L272 AbstractInterpreter]: Visited 199 different actions 591 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:19:42,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:42,910 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:42,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:42,910 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 07:19:42,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:42,923 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:43,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-11-07 07:19:43,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 89 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 07:19:44,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:19:44,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:19:44,904 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:19:44,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:19:44,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:19:44,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:19:44,905 INFO L87 Difference]: Start difference. First operand 11055 states and 18460 transitions. Second operand 9 states. [2018-11-07 07:19:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:48,469 INFO L93 Difference]: Finished difference Result 31269 states and 54930 transitions. [2018-11-07 07:19:48,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:19:48,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2018-11-07 07:19:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:48,605 INFO L225 Difference]: With dead ends: 31269 [2018-11-07 07:19:48,605 INFO L226 Difference]: Without dead ends: 20639 [2018-11-07 07:19:48,669 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:19:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20639 states. [2018-11-07 07:19:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20639 to 18960. [2018-11-07 07:19:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18960 states. [2018-11-07 07:19:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18960 states to 18960 states and 28625 transitions. [2018-11-07 07:19:49,675 INFO L78 Accepts]: Start accepts. Automaton has 18960 states and 28625 transitions. Word has length 266 [2018-11-07 07:19:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:19:49,675 INFO L480 AbstractCegarLoop]: Abstraction has 18960 states and 28625 transitions. [2018-11-07 07:19:49,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:19:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18960 states and 28625 transitions. [2018-11-07 07:19:49,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 07:19:49,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:19:49,735 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 07:19:49,736 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:19:49,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash -138689525, now seen corresponding path program 1 times [2018-11-07 07:19:49,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:19:49,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:49,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:49,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:19:49,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:19:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 07:19:50,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:50,296 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:19:50,296 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-07 07:19:50,297 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:19:50,302 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:19:50,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:19:51,437 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:19:51,437 INFO L272 AbstractInterpreter]: Visited 196 different actions 580 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:19:51,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:19:51,444 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:19:51,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:19:51,444 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 07:19:51,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:19:51,454 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:19:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:19:51,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:19:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:19:52,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:19:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:19:52,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:19:52,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 07:19:52,626 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:19:52,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:19:52,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:19:52,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:19:52,628 INFO L87 Difference]: Start difference. First operand 18960 states and 28625 transitions. Second operand 8 states. [2018-11-07 07:19:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:19:59,173 INFO L93 Difference]: Finished difference Result 56375 states and 91751 transitions. [2018-11-07 07:19:59,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 07:19:59,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2018-11-07 07:19:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:19:59,662 INFO L225 Difference]: With dead ends: 56375 [2018-11-07 07:19:59,663 INFO L226 Difference]: Without dead ends: 37629 [2018-11-07 07:19:59,762 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2018-11-07 07:19:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2018-11-07 07:20:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 36562. [2018-11-07 07:20:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36562 states. [2018-11-07 07:20:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36562 states to 36562 states and 49985 transitions. [2018-11-07 07:20:00,908 INFO L78 Accepts]: Start accepts. Automaton has 36562 states and 49985 transitions. Word has length 293 [2018-11-07 07:20:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:00,908 INFO L480 AbstractCegarLoop]: Abstraction has 36562 states and 49985 transitions. [2018-11-07 07:20:00,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:20:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 36562 states and 49985 transitions. [2018-11-07 07:20:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 07:20:01,000 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:01,000 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 07:20:01,000 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:01,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:01,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1319546731, now seen corresponding path program 1 times [2018-11-07 07:20:01,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:01,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:01,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:01,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:01,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:01,661 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 07:20:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 191 proven. 88 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-11-07 07:20:01,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:01,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:01,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 07:20:01,915 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [111], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:01,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:01,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:03,101 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:20:03,101 INFO L272 AbstractInterpreter]: Visited 199 different actions 588 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:20:03,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:03,110 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:20:03,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:03,110 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 07:20:03,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:03,119 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:03,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 07:20:04,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:20:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 246 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 07:20:04,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:20:04,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:20:04,860 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:20:04,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:20:04,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:20:04,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:20:04,863 INFO L87 Difference]: Start difference. First operand 36562 states and 49985 transitions. Second operand 9 states. [2018-11-07 07:20:08,379 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 07:20:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:18,583 INFO L93 Difference]: Finished difference Result 178733 states and 285994 transitions. [2018-11-07 07:20:18,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-07 07:20:18,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 363 [2018-11-07 07:20:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:19,635 INFO L225 Difference]: With dead ends: 178733 [2018-11-07 07:20:19,636 INFO L226 Difference]: Without dead ends: 142766 [2018-11-07 07:20:19,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 751 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2018-11-07 07:20:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142766 states. [2018-11-07 07:20:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142766 to 136709. [2018-11-07 07:20:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136709 states. [2018-11-07 07:20:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136709 states to 136709 states and 189600 transitions. [2018-11-07 07:20:25,137 INFO L78 Accepts]: Start accepts. Automaton has 136709 states and 189600 transitions. Word has length 363 [2018-11-07 07:20:25,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:25,138 INFO L480 AbstractCegarLoop]: Abstraction has 136709 states and 189600 transitions. [2018-11-07 07:20:25,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:20:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 136709 states and 189600 transitions. [2018-11-07 07:20:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-07 07:20:25,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:25,504 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:25,504 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:25,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:25,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1670276784, now seen corresponding path program 1 times [2018-11-07 07:20:25,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:25,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:25,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:25,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:25,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 216 proven. 163 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 07:20:27,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:27,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:27,051 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-07 07:20:27,051 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [276], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:27,056 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:27,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:27,660 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:20:27,660 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:20:27,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:27,666 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:20:27,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:27,666 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 07:20:27,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:27,674 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:27,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 216 proven. 4 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-11-07 07:20:28,233 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:20:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-11-07 07:20:28,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 07:20:28,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 14 [2018-11-07 07:20:28,599 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:20:28,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 07:20:28,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 07:20:28,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-11-07 07:20:28,600 INFO L87 Difference]: Start difference. First operand 136709 states and 189600 transitions. Second operand 5 states. [2018-11-07 07:20:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:20:34,060 INFO L93 Difference]: Finished difference Result 356706 states and 488087 transitions. [2018-11-07 07:20:34,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:20:34,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 415 [2018-11-07 07:20:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:20:35,152 INFO L225 Difference]: With dead ends: 356706 [2018-11-07 07:20:35,152 INFO L226 Difference]: Without dead ends: 235848 [2018-11-07 07:20:35,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 822 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-07 07:20:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235848 states. [2018-11-07 07:20:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235848 to 235480. [2018-11-07 07:20:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235480 states. [2018-11-07 07:20:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235480 states to 235480 states and 323050 transitions. [2018-11-07 07:20:46,998 INFO L78 Accepts]: Start accepts. Automaton has 235480 states and 323050 transitions. Word has length 415 [2018-11-07 07:20:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:20:46,999 INFO L480 AbstractCegarLoop]: Abstraction has 235480 states and 323050 transitions. [2018-11-07 07:20:46,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 07:20:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 235480 states and 323050 transitions. [2018-11-07 07:20:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-11-07 07:20:47,480 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:20:47,480 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:47,480 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:20:47,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:47,481 INFO L82 PathProgramCache]: Analyzing trace with hash 246317905, now seen corresponding path program 1 times [2018-11-07 07:20:47,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:20:47,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:47,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:47,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:20:47,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:20:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:48,122 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 07:20:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 263 proven. 90 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 07:20:48,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:48,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:20:48,401 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-11-07 07:20:48,401 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [562], [567], [569], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:20:48,406 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:20:48,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:20:49,414 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:20:49,414 INFO L272 AbstractInterpreter]: Visited 197 different actions 588 times. Merged at 8 different actions 20 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:20:49,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:20:49,422 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:20:49,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:20:49,422 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 07:20:49,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:20:49,432 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:20:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:20:49,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:20:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 07:20:50,640 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:20:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 07:20:50,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:20:50,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 07:20:50,820 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:20:50,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:20:50,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:20:50,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:20:50,822 INFO L87 Difference]: Start difference. First operand 235480 states and 323050 transitions. Second operand 9 states. [2018-11-07 07:21:02,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:21:02,778 INFO L93 Difference]: Finished difference Result 477350 states and 666094 transitions. [2018-11-07 07:21:02,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-07 07:21:02,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2018-11-07 07:21:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:21:03,724 INFO L225 Difference]: With dead ends: 477350 [2018-11-07 07:21:03,724 INFO L226 Difference]: Without dead ends: 188973 [2018-11-07 07:21:05,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 904 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=1805, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 07:21:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188973 states. [2018-11-07 07:21:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188973 to 183630. [2018-11-07 07:21:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183630 states. [2018-11-07 07:21:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183630 states to 183630 states and 216513 transitions. [2018-11-07 07:21:09,672 INFO L78 Accepts]: Start accepts. Automaton has 183630 states and 216513 transitions. Word has length 437 [2018-11-07 07:21:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:21:09,672 INFO L480 AbstractCegarLoop]: Abstraction has 183630 states and 216513 transitions. [2018-11-07 07:21:09,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:21:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 183630 states and 216513 transitions. [2018-11-07 07:21:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-07 07:21:09,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:21:09,954 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:21:09,955 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:21:09,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -404733961, now seen corresponding path program 1 times [2018-11-07 07:21:09,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:21:09,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:09,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:09,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:21:09,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:21:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 386 proven. 165 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 07:21:10,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:10,407 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:21:10,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-11-07 07:21:10,408 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [276], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [600], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:21:10,413 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:21:10,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:21:12,321 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:21:12,321 INFO L272 AbstractInterpreter]: Visited 200 different actions 810 times. Merged at 10 different actions 47 times. Widened at 1 different actions 1 times. Found 12 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:21:12,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:21:12,326 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:21:12,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:21:12,326 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 07:21:12,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:21:12,334 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:21:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:21:12,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:21:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 648 proven. 4 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-11-07 07:21:12,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:21:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 648 proven. 4 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-11-07 07:21:13,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:21:13,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:21:13,331 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:21:13,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:21:13,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:21:13,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:21:13,333 INFO L87 Difference]: Start difference. First operand 183630 states and 216513 transitions. Second operand 9 states. [2018-11-07 07:21:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:21:24,107 INFO L93 Difference]: Finished difference Result 468780 states and 566636 transitions. [2018-11-07 07:21:24,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-07 07:21:24,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 544 [2018-11-07 07:21:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:21:24,978 INFO L225 Difference]: With dead ends: 468780 [2018-11-07 07:21:24,978 INFO L226 Difference]: Without dead ends: 287551 [2018-11-07 07:21:25,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1112 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 07:21:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287551 states. [2018-11-07 07:21:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287551 to 283735. [2018-11-07 07:21:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283735 states. Received shutdown request... [2018-11-07 07:21:38,447 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:21:38,454 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:21:38,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:21:38 BoogieIcfgContainer [2018-11-07 07:21:38,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:21:38,455 INFO L168 Benchmark]: Toolchain (without parser) took 211160.67 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 4.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-11-07 07:21:38,456 INFO L168 Benchmark]: CDTParser took 0.19 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 07:21:38,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1319.40 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:38,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:38,458 INFO L168 Benchmark]: Boogie Preprocessor took 146.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:21:38,458 INFO L168 Benchmark]: RCFGBuilder took 5356.04 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: 272.3 MB). Peak memory consumption was 272.3 MB. Max. memory is 7.1 GB. [2018-11-07 07:21:38,459 INFO L168 Benchmark]: TraceAbstraction took 204119.36 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 1.9 GB in the beginning and 4.4 GB in the end (delta: -2.5 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. [2018-11-07 07:21:38,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1319.40 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -879.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5356.04 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: 272.3 MB). Peak memory consumption was 272.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204119.36 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.5 GB). Free memory was 1.9 GB in the beginning and 4.4 GB in the end (delta: -2.5 GB). Peak memory consumption was 4.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1584]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1584). Cancelled while ReachableStatesComputation was computing reachable states (191939 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 204.0s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 132.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3618 SDtfs, 19627 SDslu, 5871 SDs, 0 SdLazy, 35447 SolverSat, 6074 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 5913 GetRequests, 5641 SyntacticMatches, 21 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235480occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.6s AbstIntTime, 9 AbstIntIterations, 2 AbstIntStrong, 0.9988400232717426 AbsIntWeakeningRatio, 0.2916666666666667 AbsIntAvgWeakeningVarsNumRemoved, 59.396929824561404 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 37.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 15102 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 6382 NumberOfCodeBlocks, 6382 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8914 ConstructedInterpolants, 0 QuantifiedInterpolants, 7228131 SizeOfPredicates, 7 NumberOfNonLiveVariables, 10311 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 6811/7477 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown