java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:11:10,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:11:10,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:11:10,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:11:10,458 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:11:10,460 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:11:10,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:11:10,464 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:11:10,466 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:11:10,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:11:10,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:11:10,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:11:10,470 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:11:10,471 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:11:10,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:11:10,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:11:10,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:11:10,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:11:10,478 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:11:10,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:11:10,481 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:11:10,482 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:11:10,486 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:11:10,487 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:11:10,487 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:11:10,488 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:11:10,490 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:11:10,493 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:11:10,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:11:10,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:11:10,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:11:10,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:11:10,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:11:10,497 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:11:10,498 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:11:10,499 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:11:10,499 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:11:10,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:11:10,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:11:10,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:11:10,530 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:11:10,530 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:11:10,531 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:11:10,531 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:11:10,531 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:11:10,531 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:11:10,531 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:11:10,532 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:11:10,532 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:11:10,532 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:11:10,533 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:11:10,533 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:11:10,534 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:11:10,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:11:10,536 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:11:10,536 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:11:10,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:11:10,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:11:10,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:11:10,537 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:11:10,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:11:10,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:11:10,537 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:11:10,538 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:11:10,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:11:10,538 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:11:10,538 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:11:10,538 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:11:10,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:11:10,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:11:10,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:11:10,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:11:10,628 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:11:10,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-11-07 07:11:10,696 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d1f66d1/b821f5f1c7b34dcbae0367cdcd507e6b/FLAG6b1e01ac6 [2018-11-07 07:11:11,399 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:11:11,400 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label14_true-unreach-call.c [2018-11-07 07:11:11,422 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d1f66d1/b821f5f1c7b34dcbae0367cdcd507e6b/FLAG6b1e01ac6 [2018-11-07 07:11:11,441 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d1f66d1/b821f5f1c7b34dcbae0367cdcd507e6b [2018-11-07 07:11:11,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:11:11,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:11:11,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:11:11,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:11:11,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:11:11,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:11:11" (1/1) ... [2018-11-07 07:11:11,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0ae1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:11, skipping insertion in model container [2018-11-07 07:11:11,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:11:11" (1/1) ... [2018-11-07 07:11:11,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:11:11,567 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:11:12,244 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:11:12,251 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:11:12,550 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:11:12,576 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:11:12,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12 WrapperNode [2018-11-07 07:11:12,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:11:12,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:11:12,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:11:12,578 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:11:12,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:11:12,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:11:12,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:11:12,800 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:11:12,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... [2018-11-07 07:11:12,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:11:12,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:11:12,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:11:12,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:11:12,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:11:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:11:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:11:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:11:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:11:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:11:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:11:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:11:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:11:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:11:18,246 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:11:18,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:11:18 BoogieIcfgContainer [2018-11-07 07:11:18,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:11:18,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:11:18,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:11:18,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:11:18,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:11:11" (1/3) ... [2018-11-07 07:11:18,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c5adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:11:18, skipping insertion in model container [2018-11-07 07:11:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:11:12" (2/3) ... [2018-11-07 07:11:18,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c5adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:11:18, skipping insertion in model container [2018-11-07 07:11:18,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:11:18" (3/3) ... [2018-11-07 07:11:18,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label14_true-unreach-call.c [2018-11-07 07:11:18,272 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:11:18,283 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:11:18,302 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:11:18,354 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:11:18,354 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:11:18,354 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:11:18,354 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:11:18,354 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:11:18,355 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:11:18,355 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:11:18,355 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:11:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:11:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 07:11:18,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:18,431 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] [2018-11-07 07:11:18,433 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:18,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -594515452, now seen corresponding path program 1 times [2018-11-07 07:11:18,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:18,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:18,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:18,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:18,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:19,448 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:11:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:19,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:19,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:11:19,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:19,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:11:19,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:11:19,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:11:19,821 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 07:11:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:23,066 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-11-07 07:11:23,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:11:23,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-07 07:11:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:23,096 INFO L225 Difference]: With dead ends: 1054 [2018-11-07 07:11:23,097 INFO L226 Difference]: Without dead ends: 736 [2018-11-07 07:11:23,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:11:23,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-11-07 07:11:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-11-07 07:11:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-11-07 07:11:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-11-07 07:11:23,229 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 177 [2018-11-07 07:11:23,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:23,231 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-11-07 07:11:23,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:11:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-11-07 07:11:23,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 07:11:23,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:23,239 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] [2018-11-07 07:11:23,240 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:23,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:23,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1749816701, now seen corresponding path program 1 times [2018-11-07 07:11:23,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:23,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:23,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:23,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:23,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:23,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:23,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:11:23,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:23,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:11:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:11:23,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:11:23,607 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-11-07 07:11:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:26,692 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-11-07 07:11:26,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:11:26,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 07:11:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:26,704 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 07:11:26,705 INFO L226 Difference]: Without dead ends: 1068 [2018-11-07 07:11:26,708 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:11:26,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-11-07 07:11:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-11-07 07:11:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-11-07 07:11:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-11-07 07:11:26,772 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 187 [2018-11-07 07:11:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:26,773 INFO L480 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-11-07 07:11:26,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:11:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-11-07 07:11:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 07:11:26,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:26,786 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] [2018-11-07 07:11:26,787 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:26,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1491408640, now seen corresponding path program 1 times [2018-11-07 07:11:26,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:26,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:26,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:26,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:26,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:27,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:27,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:11:27,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:27,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:11:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:11:27,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:11:27,169 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-11-07 07:11:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:30,200 INFO L93 Difference]: Finished difference Result 2894 states and 5042 transitions. [2018-11-07 07:11:30,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:11:30,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-11-07 07:11:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:30,222 INFO L225 Difference]: With dead ends: 2894 [2018-11-07 07:11:30,222 INFO L226 Difference]: Without dead ends: 1875 [2018-11-07 07:11:30,228 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 [2018-11-07 07:11:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2018-11-07 07:11:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1873. [2018-11-07 07:11:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2018-11-07 07:11:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3048 transitions. [2018-11-07 07:11:30,300 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3048 transitions. Word has length 190 [2018-11-07 07:11:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:30,303 INFO L480 AbstractCegarLoop]: Abstraction has 1873 states and 3048 transitions. [2018-11-07 07:11:30,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:11:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3048 transitions. [2018-11-07 07:11:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 07:11:30,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:30,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:11:30,313 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:30,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1722677517, now seen corresponding path program 1 times [2018-11-07 07:11:30,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:30,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:30,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:30,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:30,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:30,591 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 07:11:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:30,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:30,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:11:30,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:30,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:11:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:11:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:11:30,710 INFO L87 Difference]: Start difference. First operand 1873 states and 3048 transitions. Second operand 6 states. [2018-11-07 07:11:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:33,845 INFO L93 Difference]: Finished difference Result 5735 states and 10142 transitions. [2018-11-07 07:11:33,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 07:11:33,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 07:11:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:33,879 INFO L225 Difference]: With dead ends: 5735 [2018-11-07 07:11:33,879 INFO L226 Difference]: Without dead ends: 3868 [2018-11-07 07:11:33,888 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:11:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2018-11-07 07:11:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3768. [2018-11-07 07:11:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3768 states. [2018-11-07 07:11:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 6275 transitions. [2018-11-07 07:11:34,031 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 6275 transitions. Word has length 195 [2018-11-07 07:11:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:34,032 INFO L480 AbstractCegarLoop]: Abstraction has 3768 states and 6275 transitions. [2018-11-07 07:11:34,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:11:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 6275 transitions. [2018-11-07 07:11:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 07:11:34,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:34,046 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] [2018-11-07 07:11:34,047 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:34,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash -340490772, now seen corresponding path program 1 times [2018-11-07 07:11:34,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:34,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:34,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:34,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:34,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:34,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:11:34,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 07:11:34,282 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:34,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:11:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:11:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:11:34,283 INFO L87 Difference]: Start difference. First operand 3768 states and 6275 transitions. Second operand 7 states. [2018-11-07 07:11:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:11:36,202 INFO L93 Difference]: Finished difference Result 11468 states and 21130 transitions. [2018-11-07 07:11:36,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:11:36,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2018-11-07 07:11:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:11:36,261 INFO L225 Difference]: With dead ends: 11468 [2018-11-07 07:11:36,262 INFO L226 Difference]: Without dead ends: 7706 [2018-11-07 07:11:36,280 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 [2018-11-07 07:11:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2018-11-07 07:11:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7509. [2018-11-07 07:11:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7509 states. [2018-11-07 07:11:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 12934 transitions. [2018-11-07 07:11:36,613 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 12934 transitions. Word has length 196 [2018-11-07 07:11:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:11:36,613 INFO L480 AbstractCegarLoop]: Abstraction has 7509 states and 12934 transitions. [2018-11-07 07:11:36,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 07:11:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 12934 transitions. [2018-11-07 07:11:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 07:11:36,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:11:36,645 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] [2018-11-07 07:11:36,645 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:11:36,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash 677632951, now seen corresponding path program 1 times [2018-11-07 07:11:36,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:11:36,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:36,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:11:36,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:11:36,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:11:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:11:36,915 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:11:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:11:37,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:11:37,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:11:37,119 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-11-07 07:11:37,121 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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:11:37,183 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:11:37,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:11:38,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:11:38,486 INFO L272 AbstractInterpreter]: Visited 178 different actions 178 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 07:11:38,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:11:38,510 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:11:39,352 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 72.55% of their original sizes. [2018-11-07 07:11:39,352 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:11:40,237 INFO L415 sIntCurrentIteration]: We unified 200 AI predicates to 200 [2018-11-07 07:11:40,237 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:11:40,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:11:40,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-11-07 07:11:40,238 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:11:40,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 07:11:40,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 07:11:40,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-11-07 07:11:40,240 INFO L87 Difference]: Start difference. First operand 7509 states and 12934 transitions. Second operand 17 states. [2018-11-07 07:12:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:12:12,029 INFO L93 Difference]: Finished difference Result 15222 states and 26235 transitions. [2018-11-07 07:12:12,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 07:12:12,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 201 [2018-11-07 07:12:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:12:12,079 INFO L225 Difference]: With dead ends: 15222 [2018-11-07 07:12:12,079 INFO L226 Difference]: Without dead ends: 7719 [2018-11-07 07:12:12,106 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:12:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2018-11-07 07:12:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7717. [2018-11-07 07:12:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7717 states. [2018-11-07 07:12:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7717 states to 7717 states and 13152 transitions. [2018-11-07 07:12:12,328 INFO L78 Accepts]: Start accepts. Automaton has 7717 states and 13152 transitions. Word has length 201 [2018-11-07 07:12:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:12:12,329 INFO L480 AbstractCegarLoop]: Abstraction has 7717 states and 13152 transitions. [2018-11-07 07:12:12,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 07:12:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7717 states and 13152 transitions. [2018-11-07 07:12:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 07:12:12,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:12:12,355 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] [2018-11-07 07:12:12,355 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:12:12,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:12:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1749925182, now seen corresponding path program 1 times [2018-11-07 07:12:12,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:12:12,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:12:12,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:12:12,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:12:12,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:12:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:12:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:12:12,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:12:12,686 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:12:12,687 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 07:12:12,687 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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:12:12,702 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:12:12,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:12:13,934 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:12:13,934 INFO L272 AbstractInterpreter]: Visited 182 different actions 356 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:12:13,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:12:13,941 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:12:14,600 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 75.14% of their original sizes. [2018-11-07 07:12:14,600 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:12:15,257 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 07:12:15,257 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:12:15,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:12:15,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [5] total 25 [2018-11-07 07:12:15,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:12:15,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 07:12:15,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 07:12:15,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2018-11-07 07:12:15,259 INFO L87 Difference]: Start difference. First operand 7717 states and 13152 transitions. Second operand 22 states. [2018-11-07 07:13:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:07,486 INFO L93 Difference]: Finished difference Result 30633 states and 55749 transitions. [2018-11-07 07:13:07,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 07:13:07,486 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 210 [2018-11-07 07:13:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:07,575 INFO L225 Difference]: With dead ends: 30633 [2018-11-07 07:13:07,575 INFO L226 Difference]: Without dead ends: 23130 [2018-11-07 07:13:07,630 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 07:13:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23130 states. [2018-11-07 07:13:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23130 to 22076. [2018-11-07 07:13:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22076 states. [2018-11-07 07:13:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22076 states to 22076 states and 32696 transitions. [2018-11-07 07:13:08,164 INFO L78 Accepts]: Start accepts. Automaton has 22076 states and 32696 transitions. Word has length 210 [2018-11-07 07:13:08,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:08,165 INFO L480 AbstractCegarLoop]: Abstraction has 22076 states and 32696 transitions. [2018-11-07 07:13:08,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 07:13:08,165 INFO L276 IsEmpty]: Start isEmpty. Operand 22076 states and 32696 transitions. [2018-11-07 07:13:08,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 07:13:08,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:08,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:13:08,218 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:08,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash -448743141, now seen corresponding path program 1 times [2018-11-07 07:13:08,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:08,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:08,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:08,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:08,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:08,482 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:13:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:08,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:08,913 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:08,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-07 07:13:08,915 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:08,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:08,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:09,529 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:13:09,530 INFO L272 AbstractInterpreter]: Visited 181 different actions 356 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:13:09,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:09,537 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:13:10,031 INFO L227 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 72.82% of their original sizes. [2018-11-07 07:13:10,032 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:13:10,290 INFO L415 sIntCurrentIteration]: We unified 213 AI predicates to 213 [2018-11-07 07:13:10,291 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:13:10,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:13:10,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 07:13:10,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:13:10,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 07:13:10,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 07:13:10,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:13:10,293 INFO L87 Difference]: Start difference. First operand 22076 states and 32696 transitions. Second operand 18 states. [2018-11-07 07:13:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:38,136 INFO L93 Difference]: Finished difference Result 36590 states and 57043 transitions. [2018-11-07 07:13:38,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:13:38,136 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 214 [2018-11-07 07:13:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:38,205 INFO L225 Difference]: With dead ends: 36590 [2018-11-07 07:13:38,206 INFO L226 Difference]: Without dead ends: 22290 [2018-11-07 07:13:38,240 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2018-11-07 07:13:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22290 states. [2018-11-07 07:13:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22290 to 22287. [2018-11-07 07:13:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22287 states. [2018-11-07 07:13:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22287 states to 22287 states and 32925 transitions. [2018-11-07 07:13:38,724 INFO L78 Accepts]: Start accepts. Automaton has 22287 states and 32925 transitions. Word has length 214 [2018-11-07 07:13:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:38,725 INFO L480 AbstractCegarLoop]: Abstraction has 22287 states and 32925 transitions. [2018-11-07 07:13:38,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 07:13:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 22287 states and 32925 transitions. [2018-11-07 07:13:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 07:13:38,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:38,769 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:13:38,769 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:38,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash 879857385, now seen corresponding path program 1 times [2018-11-07 07:13:38,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:38,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:38,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:13:39,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:39,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:39,132 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 07:13:39,133 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [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], [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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:39,139 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:39,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:40,611 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:40,612 INFO L272 AbstractInterpreter]: Visited 184 different actions 547 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:40,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:40,623 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:40,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:40,623 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:13:40,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:40,635 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:40,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:13:41,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 07:13:41,159 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:13:41,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-11-07 07:13:41,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:13:41,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:13:41,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:13:41,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:41,160 INFO L87 Difference]: Start difference. First operand 22287 states and 32925 transitions. Second operand 3 states. [2018-11-07 07:13:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:42,262 INFO L93 Difference]: Finished difference Result 36581 states and 56878 transitions. [2018-11-07 07:13:42,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:13:42,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2018-11-07 07:13:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:42,333 INFO L225 Difference]: With dead ends: 36581 [2018-11-07 07:13:42,333 INFO L226 Difference]: Without dead ends: 22281 [2018-11-07 07:13:42,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-07 07:13:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22281 states. [2018-11-07 07:13:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22281 to 22281. [2018-11-07 07:13:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22281 states. [2018-11-07 07:13:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22281 states to 22281 states and 32911 transitions. [2018-11-07 07:13:42,792 INFO L78 Accepts]: Start accepts. Automaton has 22281 states and 32911 transitions. Word has length 236 [2018-11-07 07:13:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:13:42,792 INFO L480 AbstractCegarLoop]: Abstraction has 22281 states and 32911 transitions. [2018-11-07 07:13:42,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:13:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 22281 states and 32911 transitions. [2018-11-07 07:13:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-07 07:13:42,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:13:42,825 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:13:42,825 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:13:42,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash 594007911, now seen corresponding path program 1 times [2018-11-07 07:13:42,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:13:42,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:42,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:42,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:13:42,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:13:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 07:13:43,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:43,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:13:43,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-11-07 07:13:43,194 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [44], [45], [49], [52], [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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:13:43,200 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:13:43,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:13:44,028 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:13:44,028 INFO L272 AbstractInterpreter]: Visited 184 different actions 546 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:13:44,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:13:44,036 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:13:44,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:13:44,036 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:13:44,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:13:44,045 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:13:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:13:44,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:13:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-07 07:13:44,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:13:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-07 07:13:46,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:13:46,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-11-07 07:13:46,395 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:13:46,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 07:13:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 07:13:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-07 07:13:46,397 INFO L87 Difference]: Start difference. First operand 22281 states and 32911 transitions. Second operand 14 states. [2018-11-07 07:13:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:13:56,878 INFO L93 Difference]: Finished difference Result 110665 states and 209692 transitions. [2018-11-07 07:13:56,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-11-07 07:13:56,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 238 [2018-11-07 07:13:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:13:57,787 INFO L225 Difference]: With dead ends: 110665 [2018-11-07 07:13:57,787 INFO L226 Difference]: Without dead ends: 96371 [2018-11-07 07:13:57,935 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 540 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1444, Invalid=6388, Unknown=0, NotChecked=0, Total=7832 [2018-11-07 07:13:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96371 states. [2018-11-07 07:14:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96371 to 94326. [2018-11-07 07:14:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94326 states. [2018-11-07 07:14:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94326 states to 94326 states and 156652 transitions. [2018-11-07 07:14:01,858 INFO L78 Accepts]: Start accepts. Automaton has 94326 states and 156652 transitions. Word has length 238 [2018-11-07 07:14:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:01,858 INFO L480 AbstractCegarLoop]: Abstraction has 94326 states and 156652 transitions. [2018-11-07 07:14:01,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 07:14:01,858 INFO L276 IsEmpty]: Start isEmpty. Operand 94326 states and 156652 transitions. [2018-11-07 07:14:02,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 07:14:02,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:02,083 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:02,084 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:02,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1721917682, now seen corresponding path program 1 times [2018-11-07 07:14:02,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:02,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:02,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:02,395 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:14:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:02,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:02,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:14:02,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 07:14:02,802 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [244], [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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:14:02,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:14:02,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:14:04,340 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:14:04,341 INFO L272 AbstractInterpreter]: Visited 183 different actions 545 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:14:04,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:04,379 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:14:04,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:04,379 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:14:04,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:04,397 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:14:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:04,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:14:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:04,966 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:14:05,293 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-11-07 07:14:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:05,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:14:05,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-07 07:14:05,794 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:14:05,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:14:05,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:14:05,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:14:05,796 INFO L87 Difference]: Start difference. First operand 94326 states and 156652 transitions. Second operand 9 states. [2018-11-07 07:14:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:14,065 INFO L93 Difference]: Finished difference Result 336642 states and 608766 transitions. [2018-11-07 07:14:14,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 07:14:14,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 262 [2018-11-07 07:14:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:15,312 INFO L225 Difference]: With dead ends: 336642 [2018-11-07 07:14:15,313 INFO L226 Difference]: Without dead ends: 241876 [2018-11-07 07:14:15,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:14:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241876 states. [2018-11-07 07:14:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241876 to 239025. [2018-11-07 07:14:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239025 states. [2018-11-07 07:14:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239025 states to 239025 states and 352929 transitions. [2018-11-07 07:14:26,123 INFO L78 Accepts]: Start accepts. Automaton has 239025 states and 352929 transitions. Word has length 262 [2018-11-07 07:14:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:26,124 INFO L480 AbstractCegarLoop]: Abstraction has 239025 states and 352929 transitions. [2018-11-07 07:14:26,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:14:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 239025 states and 352929 transitions. [2018-11-07 07:14:26,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-07 07:14:26,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:26,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:14:26,168 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:26,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:26,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1472582865, now seen corresponding path program 1 times [2018-11-07 07:14:26,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:26,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:26,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:26,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:26,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:26,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:26,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:14:26,716 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-07 07:14:26,717 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], [139], [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], [877], [879], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:14:26,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:14:26,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:14:28,919 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:14:28,920 INFO L272 AbstractInterpreter]: Visited 183 different actions 548 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:14:28,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:28,953 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:14:28,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:28,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:14:28,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:28,966 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:14:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:29,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:14:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:29,426 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:14:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:14:30,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:14:30,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 07:14:30,164 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:14:30,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 07:14:30,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 07:14:30,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:14:30,165 INFO L87 Difference]: Start difference. First operand 239025 states and 352929 transitions. Second operand 7 states. Received shutdown request... [2018-11-07 07:14:43,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:14:43,110 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:14:43,117 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:14:43,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:14:43 BoogieIcfgContainer [2018-11-07 07:14:43,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:14:43,118 INFO L168 Benchmark]: Toolchain (without parser) took 211664.56 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 07:14:43,119 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:14:43,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1120.33 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. [2018-11-07 07:14:43,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -891.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 07:14:43,122 INFO L168 Benchmark]: Boogie Preprocessor took 154.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:14:43,122 INFO L168 Benchmark]: RCFGBuilder took 5292.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. [2018-11-07 07:14:43,123 INFO L168 Benchmark]: TraceAbstraction took 204868.75 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -819.4 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-07 07:14:43,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 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 1120.33 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 221.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -891.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.71 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 5292.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204868.75 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -819.4 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1545]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1545). Cancelled while BasicCegarLoop was constructing difference of abstraction (239025states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (735067 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 204.7s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 162.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2687 SDtfs, 28229 SDslu, 5114 SDs, 0 SdLazy, 22784 SolverSat, 5352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2888 GetRequests, 2645 SyntacticMatches, 12 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3690 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239025occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.4s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.999033064930252 AbsIntWeakeningRatio, 0.3167202572347267 AbsIntAvgWeakeningVarsNumRemoved, 56.71382636655949 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 6507 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 3570 NumberOfCodeBlocks, 3570 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2042133 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5038 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 1457/1519 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown