java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:17:43,406 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:17:43,408 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:17:43,420 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:17:43,420 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:17:43,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:17:43,423 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:17:43,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:17:43,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:17:43,427 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:17:43,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:17:43,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:17:43,429 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:17:43,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:17:43,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:17:43,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:17:43,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:17:43,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:17:43,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:17:43,439 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:17:43,440 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:17:43,441 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:17:43,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:17:43,444 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:17:43,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:17:43,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:17:43,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:17:43,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:17:43,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:17:43,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:17:43,456 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:17:43,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 17:17:43,466 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:17:43,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:17:43,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:17:43,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:17:43,487 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:17:43,487 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:17:43,487 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:17:43,487 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:17:43,488 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:17:43,488 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:17:43,488 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:17:43,488 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:17:43,488 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:17:43,489 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:17:43,490 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:17:43,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:17:43,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:17:43,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:17:43,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:17:43,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:17:43,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:17:43,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:17:43,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:17:43,494 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:17:43,495 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:17:43,495 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:17:43,495 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:17:43,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:17:43,496 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:17:43,497 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:17:43,498 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:17:43,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:17:43,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:17:43,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:17:43,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:17:43,595 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:17:43,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-11-12 17:17:43,660 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146188dc9/405d950e1d1a47e6bf8c062c1d8bae53/FLAG7037e4e16 [2018-11-12 17:17:44,327 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:17:44,328 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label11_true-unreach-call.c [2018-11-12 17:17:44,352 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146188dc9/405d950e1d1a47e6bf8c062c1d8bae53/FLAG7037e4e16 [2018-11-12 17:17:44,374 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146188dc9/405d950e1d1a47e6bf8c062c1d8bae53 [2018-11-12 17:17:44,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:17:44,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:17:44,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:44,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:17:44,395 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:17:44,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:44" (1/1) ... [2018-11-12 17:17:44,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5101c3ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:44, skipping insertion in model container [2018-11-12 17:17:44,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:44" (1/1) ... [2018-11-12 17:17:44,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:17:44,502 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:17:45,252 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:45,260 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:17:45,565 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:45,595 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:17:45,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45 WrapperNode [2018-11-12 17:17:45,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:45,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:45,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:17:45,597 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:17:45,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:45,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:17:45,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:17:45,834 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:17:45,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (1/1) ... [2018-11-12 17:17:45,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:17:45,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:17:45,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:17:45,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:17:45,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (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 [2018-11-12 17:17:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:17:46,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:17:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:17:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:17:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:17:46,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:17:46,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:17:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:17:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:17:51,173 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:17:51,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:51 BoogieIcfgContainer [2018-11-12 17:17:51,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:17:51,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:17:51,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:17:51,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:17:51,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:17:44" (1/3) ... [2018-11-12 17:17:51,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592a8d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:51, skipping insertion in model container [2018-11-12 17:17:51,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:45" (2/3) ... [2018-11-12 17:17:51,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592a8d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:51, skipping insertion in model container [2018-11-12 17:17:51,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:51" (3/3) ... [2018-11-12 17:17:51,182 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11_true-unreach-call.c [2018-11-12 17:17:51,192 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:17:51,199 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:17:51,214 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:17:51,259 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:17:51,259 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:17:51,260 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:17:51,260 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:17:51,260 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:17:51,260 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:17:51,260 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:17:51,260 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:17:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:17:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-12 17:17:51,316 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:51,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:51,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:51,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1813715753, now seen corresponding path program 1 times [2018-11-12 17:17:51,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:51,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:51,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:51,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:51,385 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:52,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:52,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:52,365 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:52,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:52,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:52,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:52,391 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:17:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:54,425 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-11-12 17:17:54,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:54,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-11-12 17:17:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:54,455 INFO L225 Difference]: With dead ends: 855 [2018-11-12 17:17:54,455 INFO L226 Difference]: Without dead ends: 541 [2018-11-12 17:17:54,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-11-12 17:17:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-11-12 17:17:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-11-12 17:17:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-11-12 17:17:54,565 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 200 [2018-11-12 17:17:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:54,567 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-11-12 17:17:54,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-11-12 17:17:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-12 17:17:54,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:54,578 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:54,578 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:54,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash 86742928, now seen corresponding path program 1 times [2018-11-12 17:17:54,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:54,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:54,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:54,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:54,585 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:55,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:55,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:17:55,132 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:55,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:17:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:17:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:17:55,136 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-11-12 17:17:55,419 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-12 17:18:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:00,143 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-11-12 17:18:00,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:18:00,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2018-11-12 17:18:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:00,160 INFO L225 Difference]: With dead ends: 1590 [2018-11-12 17:18:00,161 INFO L226 Difference]: Without dead ends: 1069 [2018-11-12 17:18:00,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:18:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-11-12 17:18:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-11-12 17:18:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-11-12 17:18:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-11-12 17:18:00,253 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 210 [2018-11-12 17:18:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:00,254 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-11-12 17:18:00,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:18:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-11-12 17:18:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-12 17:18:00,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:00,261 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:00,261 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:00,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:00,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1017484904, now seen corresponding path program 1 times [2018-11-12 17:18:00,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:00,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:00,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:00,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:00,263 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:00,530 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:18:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:00,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:18:00,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:18:00,677 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:00,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:18:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:18:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:18:00,679 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-11-12 17:18:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:04,367 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-11-12 17:18:04,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:18:04,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2018-11-12 17:18:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:04,398 INFO L225 Difference]: With dead ends: 3166 [2018-11-12 17:18:04,399 INFO L226 Difference]: Without dead ends: 2148 [2018-11-12 17:18:04,406 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:18:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-12 17:18:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-11-12 17:18:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-11-12 17:18:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-11-12 17:18:04,503 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 211 [2018-11-12 17:18:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:04,505 INFO L480 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-11-12 17:18:04,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:18:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-11-12 17:18:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-12 17:18:04,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:04,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:04,515 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:04,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:04,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1009483949, now seen corresponding path program 1 times [2018-11-12 17:18:04,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:04,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:04,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:04,517 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:04,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:18:04,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:18:04,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:04,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:18:04,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:18:04,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:18:04,961 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-11-12 17:18:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:06,468 INFO L93 Difference]: Finished difference Result 6093 states and 10292 transitions. [2018-11-12 17:18:06,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:18:06,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-11-12 17:18:06,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:06,499 INFO L225 Difference]: With dead ends: 6093 [2018-11-12 17:18:06,499 INFO L226 Difference]: Without dead ends: 3994 [2018-11-12 17:18:06,509 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:18:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-11-12 17:18:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3991. [2018-11-12 17:18:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2018-11-12 17:18:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 6333 transitions. [2018-11-12 17:18:06,625 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 6333 transitions. Word has length 213 [2018-11-12 17:18:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:06,626 INFO L480 AbstractCegarLoop]: Abstraction has 3991 states and 6333 transitions. [2018-11-12 17:18:06,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:18:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 6333 transitions. [2018-11-12 17:18:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-12 17:18:06,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:06,642 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:06,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:06,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 535960129, now seen corresponding path program 1 times [2018-11-12 17:18:06,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:06,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:06,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:06,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:06,645 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:06,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:18:06,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 17:18:06,905 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:06,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:18:06,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:18:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:18:06,906 INFO L87 Difference]: Start difference. First operand 3991 states and 6333 transitions. Second operand 7 states. [2018-11-12 17:18:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:09,587 INFO L93 Difference]: Finished difference Result 12139 states and 21255 transitions. [2018-11-12 17:18:09,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:18:09,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-11-12 17:18:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:09,646 INFO L225 Difference]: With dead ends: 12139 [2018-11-12 17:18:09,647 INFO L226 Difference]: Without dead ends: 8154 [2018-11-12 17:18:09,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:18:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8154 states. [2018-11-12 17:18:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8154 to 7966. [2018-11-12 17:18:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7966 states. [2018-11-12 17:18:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7966 states to 7966 states and 13096 transitions. [2018-11-12 17:18:09,965 INFO L78 Accepts]: Start accepts. Automaton has 7966 states and 13096 transitions. Word has length 219 [2018-11-12 17:18:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:09,965 INFO L480 AbstractCegarLoop]: Abstraction has 7966 states and 13096 transitions. [2018-11-12 17:18:09,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:18:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7966 states and 13096 transitions. [2018-11-12 17:18:09,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-12 17:18:09,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:09,989 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:09,989 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:09,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 486898844, now seen corresponding path program 1 times [2018-11-12 17:18:09,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:09,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:09,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:09,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:09,991 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:10,225 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:18:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:10,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:18:10,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:18:10,361 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:10,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:18:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:18:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:18:10,363 INFO L87 Difference]: Start difference. First operand 7966 states and 13096 transitions. Second operand 6 states. [2018-11-12 17:18:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:12,891 INFO L93 Difference]: Finished difference Result 16547 states and 28268 transitions. [2018-11-12 17:18:12,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:18:12,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-11-12 17:18:12,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:12,945 INFO L225 Difference]: With dead ends: 16547 [2018-11-12 17:18:12,945 INFO L226 Difference]: Without dead ends: 8587 [2018-11-12 17:18:12,984 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 [2018-11-12 17:18:12,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2018-11-12 17:18:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8357. [2018-11-12 17:18:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8357 states. [2018-11-12 17:18:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8357 states to 8357 states and 12585 transitions. [2018-11-12 17:18:13,377 INFO L78 Accepts]: Start accepts. Automaton has 8357 states and 12585 transitions. Word has length 220 [2018-11-12 17:18:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:13,377 INFO L480 AbstractCegarLoop]: Abstraction has 8357 states and 12585 transitions. [2018-11-12 17:18:13,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:18:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8357 states and 12585 transitions. [2018-11-12 17:18:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 17:18:13,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:13,400 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:13,401 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:13,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1745842198, now seen corresponding path program 1 times [2018-11-12 17:18:13,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:13,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:13,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:13,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:13,403 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:13,678 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:18:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:13,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:13,856 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:18:13,857 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-12 17:18:13,860 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [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], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:18:13,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:18:13,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:18:15,564 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:18:15,565 INFO L272 AbstractInterpreter]: Visited 201 different actions 201 times. Never merged. Never widened. Performed 3444 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3444 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 17:18:15,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:15,611 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:18:16,972 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 74.5% of their original sizes. [2018-11-12 17:18:16,973 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:18:19,135 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-12 17:18:19,135 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:18:19,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:18:19,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-12 17:18:19,137 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:19,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 17:18:19,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 17:18:19,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-11-12 17:18:19,138 INFO L87 Difference]: Start difference. First operand 8357 states and 12585 transitions. Second operand 21 states. [2018-11-12 17:18:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:43,154 INFO L93 Difference]: Finished difference Result 16918 states and 25465 transitions. [2018-11-12 17:18:43,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:18:43,154 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 224 [2018-11-12 17:18:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:43,186 INFO L225 Difference]: With dead ends: 16918 [2018-11-12 17:18:43,186 INFO L226 Difference]: Without dead ends: 8567 [2018-11-12 17:18:43,207 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2018-11-12 17:18:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8567 states. [2018-11-12 17:18:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8567 to 8565. [2018-11-12 17:18:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8565 states. [2018-11-12 17:18:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 12804 transitions. [2018-11-12 17:18:43,445 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 12804 transitions. Word has length 224 [2018-11-12 17:18:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:43,445 INFO L480 AbstractCegarLoop]: Abstraction has 8565 states and 12804 transitions. [2018-11-12 17:18:43,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 17:18:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 12804 transitions. [2018-11-12 17:18:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-12 17:18:43,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:43,468 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:18:43,468 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:43,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash 361647275, now seen corresponding path program 1 times [2018-11-12 17:18:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:43,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:43,470 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:43,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:43,781 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:18:43,781 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-12 17:18:43,782 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [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], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:18:43,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:18:43,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:18:46,753 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:18:46,754 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Performed 8863 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8863 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:18:46,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:46,764 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:18:46,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:46,764 INFO L192 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 [2018-11-12 17:18:46,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:46,774 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:18:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:47,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:18:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 17:18:47,157 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:18:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 17:18:47,421 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:18:47,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-11-12 17:18:47,421 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:47,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:18:47,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:18:47,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:18:47,423 INFO L87 Difference]: Start difference. First operand 8565 states and 12804 transitions. Second operand 3 states. [2018-11-12 17:18:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:49,363 INFO L93 Difference]: Finished difference Result 16910 states and 25379 transitions. [2018-11-12 17:18:49,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:18:49,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2018-11-12 17:18:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:49,411 INFO L225 Difference]: With dead ends: 16910 [2018-11-12 17:18:49,411 INFO L226 Difference]: Without dead ends: 8559 [2018-11-12 17:18:49,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:18:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8559 states. [2018-11-12 17:18:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8559 to 8559. [2018-11-12 17:18:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8559 states. [2018-11-12 17:18:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 12790 transitions. [2018-11-12 17:18:49,690 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 12790 transitions. Word has length 233 [2018-11-12 17:18:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:49,690 INFO L480 AbstractCegarLoop]: Abstraction has 8559 states and 12790 transitions. [2018-11-12 17:18:49,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:18:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 12790 transitions. [2018-11-12 17:18:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-12 17:18:49,719 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:49,719 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:18:49,719 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:49,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:49,720 INFO L82 PathProgramCache]: Analyzing trace with hash 151483179, now seen corresponding path program 1 times [2018-11-12 17:18:49,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:49,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:49,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:49,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:49,721 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:50,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:50,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:18:50,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-12 17:18:50,216 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:18:50,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:18:50,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:18:51,940 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:18:51,940 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Performed 8878 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8878 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:18:51,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:51,948 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:18:51,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:51,948 INFO L192 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 [2018-11-12 17:18:51,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:51,959 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:18:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:52,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:18:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:52,412 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:18:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:52,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:18:52,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-12 17:18:52,965 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:18:52,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 17:18:52,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 17:18:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-12 17:18:52,968 INFO L87 Difference]: Start difference. First operand 8559 states and 12790 transitions. Second operand 9 states. [2018-11-12 17:19:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:06,085 INFO L93 Difference]: Finished difference Result 69437 states and 145114 transitions. [2018-11-12 17:19:06,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-12 17:19:06,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2018-11-12 17:19:06,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:06,541 INFO L225 Difference]: With dead ends: 69437 [2018-11-12 17:19:06,541 INFO L226 Difference]: Without dead ends: 61092 [2018-11-12 17:19:06,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-11-12 17:19:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61092 states. [2018-11-12 17:19:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61092 to 57774. [2018-11-12 17:19:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57774 states. [2018-11-12 17:19:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57774 states to 57774 states and 83421 transitions. [2018-11-12 17:19:09,793 INFO L78 Accepts]: Start accepts. Automaton has 57774 states and 83421 transitions. Word has length 242 [2018-11-12 17:19:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:09,793 INFO L480 AbstractCegarLoop]: Abstraction has 57774 states and 83421 transitions. [2018-11-12 17:19:09,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 17:19:09,794 INFO L276 IsEmpty]: Start isEmpty. Operand 57774 states and 83421 transitions. [2018-11-12 17:19:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-12 17:19:09,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:09,915 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:09,915 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:09,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash 646330303, now seen corresponding path program 1 times [2018-11-12 17:19:09,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:09,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:09,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:09,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:09,917 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:10,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:10,446 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:10,446 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-12 17:19:10,446 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], [124], [128], [132], [136], [140], [144], [147], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:10,453 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:10,453 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:12,345 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:19:12,345 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Performed 8877 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8877 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:12,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:12,347 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:19:12,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:12,347 INFO L192 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 [2018-11-12 17:19:12,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:12,358 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:19:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:12,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:19:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:19:12,689 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:19:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:19:12,951 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:19:12,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-12 17:19:12,951 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:19:12,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:19:12,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:19:12,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:19:12,953 INFO L87 Difference]: Start difference. First operand 57774 states and 83421 transitions. Second operand 3 states. [2018-11-12 17:19:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:15,073 INFO L93 Difference]: Finished difference Result 113406 states and 162250 transitions. [2018-11-12 17:19:15,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:19:15,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-11-12 17:19:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:16,023 INFO L225 Difference]: With dead ends: 113406 [2018-11-12 17:19:16,023 INFO L226 Difference]: Without dead ends: 69117 [2018-11-12 17:19:16,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:19:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69117 states. [2018-11-12 17:19:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69117 to 68234. [2018-11-12 17:19:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68234 states. [2018-11-12 17:19:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68234 states to 68234 states and 98472 transitions. [2018-11-12 17:19:17,534 INFO L78 Accepts]: Start accepts. Automaton has 68234 states and 98472 transitions. Word has length 263 [2018-11-12 17:19:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:17,535 INFO L480 AbstractCegarLoop]: Abstraction has 68234 states and 98472 transitions. [2018-11-12 17:19:17,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:19:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 68234 states and 98472 transitions. [2018-11-12 17:19:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-12 17:19:17,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:17,640 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:19:17,640 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:17,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1580401863, now seen corresponding path program 1 times [2018-11-12 17:19:17,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:17,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:17,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:17,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:17,642 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 17:19:17,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:17,982 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:17,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-11-12 17:19:17,982 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [260], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:17,990 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:17,990 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:19,220 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:19:19,220 INFO L272 AbstractInterpreter]: Visited 204 different actions 402 times. Merged at 5 different actions 5 times. Never widened. Performed 7715 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7715 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:19,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:19,230 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:19:21,272 INFO L227 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 78.22% of their original sizes. [2018-11-12 17:19:21,273 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:19:22,017 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-11-12 17:19:22,018 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:19:22,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:19:22,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 17:19:22,018 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:19:22,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 17:19:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 17:19:22,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-11-12 17:19:22,020 INFO L87 Difference]: Start difference. First operand 68234 states and 98472 transitions. Second operand 22 states. [2018-11-12 17:19:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:59,614 INFO L93 Difference]: Finished difference Result 137289 states and 198061 transitions. [2018-11-12 17:19:59,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 17:19:59,614 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 276 [2018-11-12 17:19:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:59,921 INFO L225 Difference]: With dead ends: 137289 [2018-11-12 17:19:59,921 INFO L226 Difference]: Without dead ends: 69274 [2018-11-12 17:20:00,059 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=226, Invalid=704, Unknown=0, NotChecked=0, Total=930 [2018-11-12 17:20:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69274 states. [2018-11-12 17:20:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69274 to 69270. [2018-11-12 17:20:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69270 states. [2018-11-12 17:20:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69270 states to 69270 states and 99560 transitions. [2018-11-12 17:20:01,624 INFO L78 Accepts]: Start accepts. Automaton has 69270 states and 99560 transitions. Word has length 276 [2018-11-12 17:20:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:01,624 INFO L480 AbstractCegarLoop]: Abstraction has 69270 states and 99560 transitions. [2018-11-12 17:20:01,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 17:20:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 69270 states and 99560 transitions. [2018-11-12 17:20:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-12 17:20:01,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:01,718 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:01,718 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:01,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1547609698, now seen corresponding path program 1 times [2018-11-12 17:20:01,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:01,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:01,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:01,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:01,720 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:02,290 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 17:20:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:20:03,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:03,085 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:03,085 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-11-12 17:20:03,086 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], [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], [315], [318], [322], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:03,096 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:03,096 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:06,889 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:06,890 INFO L272 AbstractInterpreter]: Visited 207 different actions 617 times. Merged at 7 different actions 21 times. Never widened. Performed 16933 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16933 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:06,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:06,899 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:06,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:06,899 INFO L192 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 [2018-11-12 17:20:06,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:06,910 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:07,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:20:07,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 17:20:07,845 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:20:07,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-12 17:20:07,845 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:07,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:20:07,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:20:07,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:07,847 INFO L87 Difference]: Start difference. First operand 69270 states and 99560 transitions. Second operand 3 states. [2018-11-12 17:20:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:10,585 INFO L93 Difference]: Finished difference Result 182601 states and 264004 transitions. [2018-11-12 17:20:10,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:20:10,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2018-11-12 17:20:10,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:11,015 INFO L225 Difference]: With dead ends: 182601 [2018-11-12 17:20:11,016 INFO L226 Difference]: Without dead ends: 113754 [2018-11-12 17:20:11,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 598 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113754 states. [2018-11-12 17:20:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113754 to 111288. [2018-11-12 17:20:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111288 states. [2018-11-12 17:20:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111288 states to 111288 states and 158587 transitions. [2018-11-12 17:20:14,229 INFO L78 Accepts]: Start accepts. Automaton has 111288 states and 158587 transitions. Word has length 300 [2018-11-12 17:20:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:14,229 INFO L480 AbstractCegarLoop]: Abstraction has 111288 states and 158587 transitions. [2018-11-12 17:20:14,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:20:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 111288 states and 158587 transitions. [2018-11-12 17:20:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-12 17:20:14,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:14,330 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:14,330 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:14,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1489124429, now seen corresponding path program 1 times [2018-11-12 17:20:14,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:14,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:14,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:14,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:14,332 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 125 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:20:14,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:14,839 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:14,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-11-12 17:20:14,840 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [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], [260], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:14,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:14,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:17,187 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:17,187 INFO L272 AbstractInterpreter]: Visited 206 different actions 404 times. Merged at 4 different actions 4 times. Never widened. Performed 8887 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8887 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:20:17,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:17,192 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:17,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:17,192 INFO L192 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 [2018-11-12 17:20:17,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:17,200 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:17,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-12 17:20:17,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:17,637 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-12 17:20:17,660 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:20:17,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-12 17:20:17,660 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:17,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:20:17,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:20:17,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:17,661 INFO L87 Difference]: Start difference. First operand 111288 states and 158587 transitions. Second operand 3 states. [2018-11-12 17:20:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:19,866 INFO L93 Difference]: Finished difference Result 195297 states and 273701 transitions. [2018-11-12 17:20:19,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:20:19,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 311 [2018-11-12 17:20:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:20,362 INFO L225 Difference]: With dead ends: 195297 [2018-11-12 17:20:20,363 INFO L226 Difference]: Without dead ends: 104009 [2018-11-12 17:20:20,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 620 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104009 states. [2018-11-12 17:20:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104009 to 103705. [2018-11-12 17:20:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103705 states. [2018-11-12 17:20:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103705 states to 103705 states and 146046 transitions. [2018-11-12 17:20:26,798 INFO L78 Accepts]: Start accepts. Automaton has 103705 states and 146046 transitions. Word has length 311 [2018-11-12 17:20:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:26,799 INFO L480 AbstractCegarLoop]: Abstraction has 103705 states and 146046 transitions. [2018-11-12 17:20:26,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:20:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 103705 states and 146046 transitions. [2018-11-12 17:20:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-12 17:20:26,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:26,916 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:26,916 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:26,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2130603741, now seen corresponding path program 1 times [2018-11-12 17:20:26,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:26,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:26,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:26,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:26,918 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 133 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:20:27,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:27,448 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:27,448 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-12 17:20:27,448 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [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], [292], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:27,455 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:27,456 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:29,218 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:29,218 INFO L272 AbstractInterpreter]: Visited 206 different actions 404 times. Merged at 4 different actions 4 times. Never widened. Performed 9047 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9047 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:20:29,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:29,226 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:29,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:29,226 INFO L192 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 [2018-11-12 17:20:29,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:29,236 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:29,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-12 17:20:29,586 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:29,957 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-12 17:20:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 133 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:20:30,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:30,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-12 17:20:30,186 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:30,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:20:30,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:20:30,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:30,187 INFO L87 Difference]: Start difference. First operand 103705 states and 146046 transitions. Second operand 6 states. [2018-11-12 17:20:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:32,418 INFO L93 Difference]: Finished difference Result 199847 states and 281236 transitions. [2018-11-12 17:20:32,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-12 17:20:32,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 319 [2018-11-12 17:20:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:32,714 INFO L225 Difference]: With dead ends: 199847 [2018-11-12 17:20:32,714 INFO L226 Difference]: Without dead ends: 101099 [2018-11-12 17:20:32,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:20:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101099 states. [2018-11-12 17:20:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101099 to 101099. [2018-11-12 17:20:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101099 states. [2018-11-12 17:20:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101099 states to 101099 states and 139810 transitions. [2018-11-12 17:20:35,669 INFO L78 Accepts]: Start accepts. Automaton has 101099 states and 139810 transitions. Word has length 319 [2018-11-12 17:20:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:35,670 INFO L480 AbstractCegarLoop]: Abstraction has 101099 states and 139810 transitions. [2018-11-12 17:20:35,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:20:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 101099 states and 139810 transitions. [2018-11-12 17:20:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-12 17:20:35,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:35,770 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:35,771 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:35,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash 280490152, now seen corresponding path program 1 times [2018-11-12 17:20:35,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:35,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:35,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:35,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:35,772 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:20:36,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:36,146 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:36,146 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-12 17:20:36,146 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], [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], [491], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:36,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:36,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:37,849 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:37,849 INFO L272 AbstractInterpreter]: Visited 205 different actions 402 times. Merged at 4 different actions 4 times. Never widened. Performed 8863 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8863 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:20:37,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:37,856 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:37,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:37,856 INFO L192 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 [2018-11-12 17:20:37,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:37,865 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:38,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:20:38,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:20:38,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:38,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-12 17:20:38,638 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:38,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:20:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:20:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:20:38,639 INFO L87 Difference]: Start difference. First operand 101099 states and 139810 transitions. Second operand 6 states. [2018-11-12 17:20:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:41,716 INFO L93 Difference]: Finished difference Result 202545 states and 285261 transitions. [2018-11-12 17:20:41,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:20:41,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 335 [2018-11-12 17:20:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:42,093 INFO L225 Difference]: With dead ends: 202545 [2018-11-12 17:20:42,093 INFO L226 Difference]: Without dead ends: 102716 [2018-11-12 17:20:42,271 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 669 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:20:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102716 states. [2018-11-12 17:20:44,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102716 to 97582. [2018-11-12 17:20:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97582 states. [2018-11-12 17:20:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97582 states to 97582 states and 132035 transitions. [2018-11-12 17:20:44,935 INFO L78 Accepts]: Start accepts. Automaton has 97582 states and 132035 transitions. Word has length 335 [2018-11-12 17:20:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:44,936 INFO L480 AbstractCegarLoop]: Abstraction has 97582 states and 132035 transitions. [2018-11-12 17:20:44,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:20:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 97582 states and 132035 transitions. [2018-11-12 17:20:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-12 17:20:45,054 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:45,054 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:45,054 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:45,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1363022075, now seen corresponding path program 1 times [2018-11-12 17:20:45,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:45,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:45,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:45,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:45,056 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:45,654 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 17:20:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 175 proven. 59 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-12 17:20:45,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:45,934 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:45,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-11-12 17:20:45,935 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], [112], [116], [120], [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], [292], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:45,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:45,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:49,766 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:49,767 INFO L272 AbstractInterpreter]: Visited 207 different actions 615 times. Merged at 7 different actions 17 times. Never widened. Performed 17530 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17530 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:49,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:49,770 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:49,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:49,770 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:20:49,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:49,781 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:50,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 246 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-12 17:20:50,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 248 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-12 17:20:50,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:50,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 17:20:50,408 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:50,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 17:20:50,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 17:20:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:20:50,409 INFO L87 Difference]: Start difference. First operand 97582 states and 132035 transitions. Second operand 9 states. [2018-11-12 17:20:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:58,971 INFO L93 Difference]: Finished difference Result 199910 states and 284702 transitions. [2018-11-12 17:20:58,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-12 17:20:58,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 357 [2018-11-12 17:20:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:59,390 INFO L225 Difference]: With dead ends: 199910 [2018-11-12 17:20:59,390 INFO L226 Difference]: Without dead ends: 103600 [2018-11-12 17:20:59,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 746 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=500, Invalid=1950, Unknown=0, NotChecked=0, Total=2450 [2018-11-12 17:20:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103600 states. [2018-11-12 17:21:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103600 to 99834. [2018-11-12 17:21:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99834 states. [2018-11-12 17:21:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99834 states to 99834 states and 119914 transitions. [2018-11-12 17:21:01,903 INFO L78 Accepts]: Start accepts. Automaton has 99834 states and 119914 transitions. Word has length 357 [2018-11-12 17:21:01,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:21:01,903 INFO L480 AbstractCegarLoop]: Abstraction has 99834 states and 119914 transitions. [2018-11-12 17:21:01,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 17:21:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 99834 states and 119914 transitions. [2018-11-12 17:21:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-11-12 17:21:01,996 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:21:01,997 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 17:21:01,997 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:21:01,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:01,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1770463775, now seen corresponding path program 1 times [2018-11-12 17:21:01,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:21:01,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:01,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:21:01,999 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:21:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-12 17:21:02,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:21:02,486 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:21:02,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-11-12 17:21:02,486 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [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], [491], [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], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1061], [1063], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:21:02,492 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:21:02,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:21:05,928 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:21:05,928 INFO L272 AbstractInterpreter]: Visited 206 different actions 618 times. Merged at 8 different actions 24 times. Never widened. Performed 13832 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13832 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:21:05,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:21:05,938 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:21:05,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:21:05,938 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:21:05,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:21:05,947 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:21:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:21:06,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:21:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-12 17:21:06,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:21:06,516 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 17:21:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 162 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:21:06,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:21:06,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2018-11-12 17:21:06,854 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:21:06,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:21:06,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:21:06,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:21:06,857 INFO L87 Difference]: Start difference. First operand 99834 states and 119914 transitions. Second operand 12 states. Received shutdown request... [2018-11-12 17:21:11,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 17:21:11,986 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:21:11,993 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:21:11,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:21:11 BoogieIcfgContainer [2018-11-12 17:21:11,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:21:11,994 INFO L168 Benchmark]: Toolchain (without parser) took 207609.27 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 17:21:11,995 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. [2018-11-12 17:21:11,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1208.02 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-12 17:21:11,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:21:11,997 INFO L168 Benchmark]: Boogie Preprocessor took 162.96 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. [2018-11-12 17:21:11,998 INFO L168 Benchmark]: RCFGBuilder took 5177.53 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: 266.1 MB). Peak memory consumption was 266.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:21:11,998 INFO L168 Benchmark]: TraceAbstraction took 200818.67 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -728.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 17:21:12,002 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 1208.02 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.7 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.96 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 5177.53 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: 266.1 MB). Peak memory consumption was 266.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200818.67 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -728.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1614]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1614). Cancelled while BasicCegarLoop was constructing difference of abstraction (99834states) and FLOYD_HOARE automaton (currently 19 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (99589 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 200.7s OverallTime, 17 OverallIterations, 5 TraceHistogramMax, 125.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3929 SDtfs, 22365 SDslu, 3367 SDs, 0 SdLazy, 29615 SolverSat, 6309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 6210 GetRequests, 5963 SyntacticMatches, 19 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111288occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.5s AbstIntTime, 11 AbstIntIterations, 2 AbstIntStrong, 0.9992736638556774 AbsIntWeakeningRatio, 0.25301204819277107 AbsIntAvgWeakeningVarsNumRemoved, 60.29317269076305 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 24.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 16400 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 7215 NumberOfCodeBlocks, 7215 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 9901 ConstructedInterpolants, 0 QuantifiedInterpolants, 6453673 SizeOfPredicates, 18 NumberOfNonLiveVariables, 10906 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 35 InterpolantComputations, 14 PerfectInterpolantSequences, 3774/3985 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown