java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:23,438 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:23,440 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:23,458 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:23,459 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:23,460 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:23,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:23,463 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:23,465 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:23,466 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:23,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:23,467 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:23,468 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:23,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:23,470 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:23,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:23,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:23,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:23,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:23,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:23,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:23,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:23,491 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:23,491 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:23,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:23,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:23,494 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:23,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:23,495 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:23,499 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:23,500 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:23,500 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:23,501 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:23,501 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:23,502 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:23,502 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:23,503 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:56:23,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:23,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:23,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:23,520 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:23,520 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:23,520 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:23,521 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:23,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:23,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:23,521 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:23,521 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:23,522 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:23,522 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:23,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:23,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:23,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:23,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:23,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:23,524 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:23,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:23,524 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:23,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:23,525 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:23,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:23,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:23,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:23,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:23,526 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:23,526 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:23,526 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:23,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:23,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:23,527 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:23,527 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:23,527 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:23,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:23,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:23,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:23,614 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:23,615 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:23,615 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-11-07 18:56:23,692 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11d104c3/4dbd95b82bb94ec8b11eccd6ac5b3546/FLAG286b2b6e5 [2018-11-07 18:56:24,411 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:24,414 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-11-07 18:56:24,444 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11d104c3/4dbd95b82bb94ec8b11eccd6ac5b3546/FLAG286b2b6e5 [2018-11-07 18:56:24,464 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11d104c3/4dbd95b82bb94ec8b11eccd6ac5b3546 [2018-11-07 18:56:24,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:24,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:24,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:24,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:24,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:24,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32800668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24, skipping insertion in model container [2018-11-07 18:56:24,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:24,611 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:25,390 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:25,396 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:25,742 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:25,767 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:25,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25 WrapperNode [2018-11-07 18:56:25,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:25,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:25,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:25,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:25,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:25,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:25,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:25,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:25,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:25,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:25,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:25,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (1/1) ... [2018-11-07 18:56:26,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:26,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:26,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:26,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:26,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (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 18:56:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:30,845 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:30,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:30 BoogieIcfgContainer [2018-11-07 18:56:30,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:30,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:30,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:30,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:30,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:24" (1/3) ... [2018-11-07 18:56:30,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2552540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:30, skipping insertion in model container [2018-11-07 18:56:30,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:25" (2/3) ... [2018-11-07 18:56:30,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2552540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:30, skipping insertion in model container [2018-11-07 18:56:30,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:30" (3/3) ... [2018-11-07 18:56:30,859 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label48_true-unreach-call.c [2018-11-07 18:56:30,870 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:30,880 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:30,899 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:30,940 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:30,941 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:30,941 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:30,941 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:30,941 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:30,941 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:30,942 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:30,942 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 18:56:30,993 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:30,994 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:30,997 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:31,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1967383007, now seen corresponding path program 1 times [2018-11-07 18:56:31,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:31,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:31,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:31,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:31,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:32,325 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 18:56:32,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:32,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:56:32,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:32,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:56:32,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:56:32,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:32,354 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 18:56:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:35,498 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-11-07 18:56:35,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:56:35,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-11-07 18:56:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:35,528 INFO L225 Difference]: With dead ends: 1058 [2018-11-07 18:56:35,528 INFO L226 Difference]: Without dead ends: 740 [2018-11-07 18:56:35,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-11-07 18:56:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-11-07 18:56:35,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-07 18:56:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-11-07 18:56:35,630 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 190 [2018-11-07 18:56:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:35,631 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-11-07 18:56:35,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:56:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-11-07 18:56:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-07 18:56:35,639 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:35,640 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:35,640 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:35,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash 805361829, now seen corresponding path program 1 times [2018-11-07 18:56:35,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:35,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:35,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:36,032 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 18:56:36,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:36,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:36,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:36,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:36,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:36,037 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-11-07 18:56:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:37,823 INFO L93 Difference]: Finished difference Result 1473 states and 2531 transitions. [2018-11-07 18:56:37,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:37,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-11-07 18:56:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:37,834 INFO L225 Difference]: With dead ends: 1473 [2018-11-07 18:56:37,835 INFO L226 Difference]: Without dead ends: 954 [2018-11-07 18:56:37,839 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-11-07 18:56:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2018-11-07 18:56:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-11-07 18:56:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1506 transitions. [2018-11-07 18:56:37,897 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1506 transitions. Word has length 203 [2018-11-07 18:56:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:37,898 INFO L480 AbstractCegarLoop]: Abstraction has 953 states and 1506 transitions. [2018-11-07 18:56:37,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1506 transitions. [2018-11-07 18:56:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 18:56:37,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:37,903 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:37,904 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:37,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 190939521, now seen corresponding path program 1 times [2018-11-07 18:56:37,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:37,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:37,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:37,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:37,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:38,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:38,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:38,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:38,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:38,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:38,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:38,230 INFO L87 Difference]: Start difference. First operand 953 states and 1506 transitions. Second operand 3 states. [2018-11-07 18:56:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:41,011 INFO L93 Difference]: Finished difference Result 2750 states and 4459 transitions. [2018-11-07 18:56:41,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:41,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-11-07 18:56:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:41,033 INFO L225 Difference]: With dead ends: 2750 [2018-11-07 18:56:41,033 INFO L226 Difference]: Without dead ends: 1803 [2018-11-07 18:56:41,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-11-07 18:56:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-11-07 18:56:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-11-07 18:56:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2785 transitions. [2018-11-07 18:56:41,118 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2785 transitions. Word has length 205 [2018-11-07 18:56:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:41,120 INFO L480 AbstractCegarLoop]: Abstraction has 1786 states and 2785 transitions. [2018-11-07 18:56:41,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2785 transitions. [2018-11-07 18:56:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 18:56:41,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:41,129 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:41,129 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:41,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -332724808, now seen corresponding path program 1 times [2018-11-07 18:56:41,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:41,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:41,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:41,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:41,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:41,397 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:41,915 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 18:56:41,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:41,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:56:41,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:41,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:56:41,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:56:41,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:56:41,919 INFO L87 Difference]: Start difference. First operand 1786 states and 2785 transitions. Second operand 6 states. [2018-11-07 18:56:42,160 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-07 18:56:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:45,955 INFO L93 Difference]: Finished difference Result 5463 states and 9326 transitions. [2018-11-07 18:56:45,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:56:45,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-11-07 18:56:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:45,996 INFO L225 Difference]: With dead ends: 5463 [2018-11-07 18:56:45,997 INFO L226 Difference]: Without dead ends: 3683 [2018-11-07 18:56:46,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:56:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-11-07 18:56:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3573. [2018-11-07 18:56:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2018-11-07 18:56:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5686 transitions. [2018-11-07 18:56:46,170 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5686 transitions. Word has length 208 [2018-11-07 18:56:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:46,170 INFO L480 AbstractCegarLoop]: Abstraction has 3573 states and 5686 transitions. [2018-11-07 18:56:46,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:56:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5686 transitions. [2018-11-07 18:56:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 18:56:46,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:46,187 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:46,188 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:46,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:46,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1900171544, now seen corresponding path program 1 times [2018-11-07 18:56:46,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:46,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:46,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:46,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:46,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:46,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:46,476 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:46,477 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-07 18:56:46,480 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:46,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:46,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:50,128 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:50,129 INFO L272 AbstractInterpreter]: Visited 194 different actions 382 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 18:56:50,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:50,159 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:51,856 INFO L227 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 73.38% of their original sizes. [2018-11-07 18:56:51,857 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:52,962 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-07 18:56:52,962 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:52,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:52,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:56:52,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:52,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:56:52,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:56:52,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:56:52,965 INFO L87 Difference]: Start difference. First operand 3573 states and 5686 transitions. Second operand 17 states. [2018-11-07 18:57:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:38,003 INFO L93 Difference]: Finished difference Result 8195 states and 13181 transitions. [2018-11-07 18:57:38,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:57:38,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-11-07 18:57:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:38,024 INFO L225 Difference]: With dead ends: 8195 [2018-11-07 18:57:38,024 INFO L226 Difference]: Without dead ends: 4628 [2018-11-07 18:57:38,038 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:57:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2018-11-07 18:57:38,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4626. [2018-11-07 18:57:38,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4626 states. [2018-11-07 18:57:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6851 transitions. [2018-11-07 18:57:38,168 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6851 transitions. Word has length 223 [2018-11-07 18:57:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:38,169 INFO L480 AbstractCegarLoop]: Abstraction has 4626 states and 6851 transitions. [2018-11-07 18:57:38,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:57:38,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6851 transitions. [2018-11-07 18:57:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 18:57:38,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:38,187 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:57:38,187 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:38,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash -293354159, now seen corresponding path program 1 times [2018-11-07 18:57:38,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:38,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:38,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 18:57:38,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:38,457 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:38,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-07 18:57:38,458 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:38,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:38,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:39,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:39,715 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:57:39,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:39,723 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:41,305 INFO L227 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 81.24% of their original sizes. [2018-11-07 18:57:41,306 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:44,328 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-07 18:57:44,328 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:44,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:44,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 18:57:44,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:44,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:57:44,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:57:44,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:57:44,331 INFO L87 Difference]: Start difference. First operand 4626 states and 6851 transitions. Second operand 22 states. [2018-11-07 18:58:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:53,427 INFO L93 Difference]: Finished difference Result 9671 states and 14431 transitions. [2018-11-07 18:58:53,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 18:58:53,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 237 [2018-11-07 18:58:53,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:53,450 INFO L225 Difference]: With dead ends: 9671 [2018-11-07 18:58:53,450 INFO L226 Difference]: Without dead ends: 5259 [2018-11-07 18:58:53,463 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 188 SyntacticMatches, 28 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:58:53,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2018-11-07 18:58:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 5254. [2018-11-07 18:58:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2018-11-07 18:58:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 7530 transitions. [2018-11-07 18:58:53,594 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 7530 transitions. Word has length 237 [2018-11-07 18:58:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:53,595 INFO L480 AbstractCegarLoop]: Abstraction has 5254 states and 7530 transitions. [2018-11-07 18:58:53,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:58:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 7530 transitions. [2018-11-07 18:58:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 18:58:53,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:53,614 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:58:53,614 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:53,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash 26603704, now seen corresponding path program 1 times [2018-11-07 18:58:53,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:53,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:53,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:53,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:53,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 18:58:53,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:53,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:53,923 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 18:58:53,924 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:53,933 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:53,933 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:55,957 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:58:55,957 INFO L272 AbstractInterpreter]: Visited 196 different actions 387 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:58:55,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:55,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:58:55,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:55,964 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 18:58:56,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:56,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:58:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:56,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:58:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 18:58:56,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:58:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-07 18:58:57,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:58:57,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-11-07 18:58:57,755 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:58:57,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:58:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:58:57,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:58:57,756 INFO L87 Difference]: Start difference. First operand 5254 states and 7530 transitions. Second operand 8 states. [2018-11-07 18:59:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:02,740 INFO L93 Difference]: Finished difference Result 17673 states and 32660 transitions. [2018-11-07 18:59:02,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:59:02,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-11-07 18:59:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:02,876 INFO L225 Difference]: With dead ends: 17673 [2018-11-07 18:59:02,876 INFO L226 Difference]: Without dead ends: 13261 [2018-11-07 18:59:02,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:59:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2018-11-07 18:59:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 12981. [2018-11-07 18:59:03,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12981 states. [2018-11-07 18:59:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12981 states to 12981 states and 20743 transitions. [2018-11-07 18:59:03,583 INFO L78 Accepts]: Start accepts. Automaton has 12981 states and 20743 transitions. Word has length 241 [2018-11-07 18:59:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:03,583 INFO L480 AbstractCegarLoop]: Abstraction has 12981 states and 20743 transitions. [2018-11-07 18:59:03,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:59:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12981 states and 20743 transitions. [2018-11-07 18:59:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 18:59:03,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:03,645 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:03,646 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:03,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:03,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1105756810, now seen corresponding path program 1 times [2018-11-07 18:59:03,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:03,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:03,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:03,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:03,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 90 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-07 18:59:04,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:04,137 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:04,138 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 18:59:04,138 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:04,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:04,145 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:06,921 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:06,921 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 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 18:59:06,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:06,960 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:06,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:06,960 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 18:59:06,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:06,976 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:07,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-11-07 18:59:07,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 89 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 18:59:07,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:59:07,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 18:59:07,695 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:59:07,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:59:07,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:59:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:59:07,696 INFO L87 Difference]: Start difference. First operand 12981 states and 20743 transitions. Second operand 9 states. [2018-11-07 18:59:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:10,967 INFO L93 Difference]: Finished difference Result 34066 states and 58360 transitions. [2018-11-07 18:59:10,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:59:10,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2018-11-07 18:59:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:11,087 INFO L225 Difference]: With dead ends: 34066 [2018-11-07 18:59:11,088 INFO L226 Difference]: Without dead ends: 21927 [2018-11-07 18:59:11,154 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:59:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21927 states. [2018-11-07 18:59:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21927 to 20241. [2018-11-07 18:59:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20241 states. [2018-11-07 18:59:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20241 states to 20241 states and 30181 transitions. [2018-11-07 18:59:12,068 INFO L78 Accepts]: Start accepts. Automaton has 20241 states and 30181 transitions. Word has length 266 [2018-11-07 18:59:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:12,068 INFO L480 AbstractCegarLoop]: Abstraction has 20241 states and 30181 transitions. [2018-11-07 18:59:12,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:59:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 20241 states and 30181 transitions. [2018-11-07 18:59:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 18:59:12,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:12,136 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:12,136 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:12,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash -138689525, now seen corresponding path program 1 times [2018-11-07 18:59:12,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:12,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:12,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:59:12,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:12,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:12,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-07 18:59:12,652 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:12,658 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:12,659 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:34,167 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:34,167 INFO L272 AbstractInterpreter]: Visited 196 different actions 3911 times. Merged at 8 different actions 201 times. Widened at 1 different actions 16 times. Found 39 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:59:34,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:34,174 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:34,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:34,174 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 18:59:34,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:34,183 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:34,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 18:59:34,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 18:59:35,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:59:35,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 18:59:35,378 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:59:35,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:59:35,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:59:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:59:35,380 INFO L87 Difference]: Start difference. First operand 20241 states and 30181 transitions. Second operand 8 states. [2018-11-07 18:59:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:41,518 INFO L93 Difference]: Finished difference Result 59401 states and 95789 transitions. [2018-11-07 18:59:41,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:59:41,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2018-11-07 18:59:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:41,734 INFO L225 Difference]: With dead ends: 59401 [2018-11-07 18:59:41,734 INFO L226 Difference]: Without dead ends: 39583 [2018-11-07 18:59:41,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:59:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39583 states. [2018-11-07 18:59:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39583 to 38383. [2018-11-07 18:59:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38383 states. [2018-11-07 18:59:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38383 states to 38383 states and 52209 transitions. [2018-11-07 18:59:43,364 INFO L78 Accepts]: Start accepts. Automaton has 38383 states and 52209 transitions. Word has length 293 [2018-11-07 18:59:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:43,364 INFO L480 AbstractCegarLoop]: Abstraction has 38383 states and 52209 transitions. [2018-11-07 18:59:43,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:59:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 38383 states and 52209 transitions. [2018-11-07 18:59:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 18:59:43,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:43,468 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:43,468 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:43,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1319546731, now seen corresponding path program 1 times [2018-11-07 18:59:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:43,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:43,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:44,118 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 18:59:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 191 proven. 88 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-11-07 18:59:44,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:44,376 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:44,376 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 18:59:44,377 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [111], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:44,383 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:44,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:47,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:47,630 INFO L272 AbstractInterpreter]: Visited 198 different actions 588 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 18:59:47,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:47,640 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:47,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:47,640 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 18:59:47,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:47,653 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:47,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-07 18:59:48,550 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 246 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 18:59:48,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:59:48,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 18:59:48,994 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:59:48,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:59:48,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:59:48,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:59:48,995 INFO L87 Difference]: Start difference. First operand 38383 states and 52209 transitions. Second operand 9 states. [2018-11-07 18:59:49,331 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 19:00:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 19:00:02,753 INFO L93 Difference]: Finished difference Result 181316 states and 290071 transitions. [2018-11-07 19:00:02,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-07 19:00:02,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 363 [2018-11-07 19:00:02,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 19:00:03,722 INFO L225 Difference]: With dead ends: 181316 [2018-11-07 19:00:03,722 INFO L226 Difference]: Without dead ends: 144365 [2018-11-07 19:00:03,964 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 751 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=381, Invalid=1511, Unknown=0, NotChecked=0, Total=1892 [2018-11-07 19:00:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144365 states. Received shutdown request... [2018-11-07 19:00:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144365 to 138228. [2018-11-07 19:00:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138228 states. [2018-11-07 19:00:09,061 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:09,067 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:09,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:09 BoogieIcfgContainer [2018-11-07 19:00:09,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:09,068 INFO L168 Benchmark]: Toolchain (without parser) took 224593.33 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -718.7 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:09,070 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:09,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1291.35 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:09,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:09,074 INFO L168 Benchmark]: Boogie Preprocessor took 165.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:09,075 INFO L168 Benchmark]: RCFGBuilder took 4702.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.9 MB). Peak memory consumption was 247.9 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:09,075 INFO L168 Benchmark]: TraceAbstraction took 218219.11 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -197.8 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:09,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1291.35 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.65 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.76 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4702.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.9 MB). Peak memory consumption was 247.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218219.11 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -197.8 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1584]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1584). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 218.1s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 156.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2899 SDtfs, 14444 SDslu, 3646 SDs, 0 SdLazy, 28855 SolverSat, 4663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2967 GetRequests, 2771 SyntacticMatches, 36 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38383occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 34.5s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.9987809731527358 AbsIntWeakeningRatio, 0.28820960698689957 AbsIntAvgWeakeningVarsNumRemoved, 49.72707423580786 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 3516 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3592 NumberOfCodeBlocks, 3592 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4737 ConstructedInterpolants, 0 QuantifiedInterpolants, 2513200 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 2316/2540 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown