java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:51:24,502 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:51:24,504 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:51:24,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:51:24,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:51:24,518 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:51:24,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:51:24,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:51:24,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:51:24,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:51:24,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:51:24,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:51:24,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:51:24,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:51:24,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:51:24,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:51:24,534 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:51:24,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:51:24,546 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:51:24,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:51:24,549 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:51:24,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:51:24,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:51:24,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:51:24,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:51:24,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:51:24,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:51:24,563 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:51:24,564 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:51:24,565 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:51:24,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:51:24,566 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 08:51:24,568 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:51:24,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:51:24,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:51:24,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:51:24,593 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:51:24,593 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:51:24,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:51:24,594 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:51:24,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:51:24,594 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:51:24,594 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:51:24,595 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:51:24,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:51:24,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:51:24,595 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:51:24,596 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:51:24,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:51:24,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:51:24,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:51:24,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:51:24,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:51:24,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:51:24,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:51:24,598 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:51:24,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:51:24,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:51:24,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:51:24,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:51:24,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:51:24,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:51:24,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:51:24,599 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:51:24,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:51:24,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:51:24,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:51:24,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:51:24,600 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:51:24,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:51:24,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:51:24,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:51:24,676 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:51:24,677 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:51:24,678 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-11-07 08:51:24,740 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325cf2c/5a312b1656b44d9d8bb24eacfc245e33/FLAGed70fe972 [2018-11-07 08:51:25,521 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:51:25,522 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-11-07 08:51:25,558 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325cf2c/5a312b1656b44d9d8bb24eacfc245e33/FLAGed70fe972 [2018-11-07 08:51:25,574 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06325cf2c/5a312b1656b44d9d8bb24eacfc245e33 [2018-11-07 08:51:25,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:51:25,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:51:25,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:51:25,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:51:25,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:51:25,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:25" (1/1) ... [2018-11-07 08:51:25,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:25, skipping insertion in model container [2018-11-07 08:51:25,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:51:25" (1/1) ... [2018-11-07 08:51:25,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:51:25,809 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:51:27,329 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:51:27,334 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:51:28,058 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:51:28,098 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:51:28,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28 WrapperNode [2018-11-07 08:51:28,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:51:28,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:51:28,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:51:28,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:51:28,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:51:28,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:51:28,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:51:28,510 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:51:28,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (1/1) ... [2018-11-07 08:51:28,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:51:28,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:51:28,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:51:28,797 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:51:28,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (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 08:51:28,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:51:28,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:51:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:51:28,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:51:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:51:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:51:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:51:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:51:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:51:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:51:28,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:51:28,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:51:28,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:51:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:51:28,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:51:40,838 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:51:40,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:40 BoogieIcfgContainer [2018-11-07 08:51:40,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:51:40,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:51:40,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:51:40,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:51:40,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:51:25" (1/3) ... [2018-11-07 08:51:40,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:40, skipping insertion in model container [2018-11-07 08:51:40,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:51:28" (2/3) ... [2018-11-07 08:51:40,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:51:40, skipping insertion in model container [2018-11-07 08:51:40,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:51:40" (3/3) ... [2018-11-07 08:51:40,847 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label34_true-unreach-call.c [2018-11-07 08:51:40,857 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:51:40,868 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:51:40,884 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:51:40,932 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:51:40,932 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:51:40,932 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:51:40,933 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:51:40,933 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:51:40,933 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:51:40,933 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:51:40,933 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:51:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:51:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 08:51:40,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:40,996 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] [2018-11-07 08:51:40,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:41,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:41,006 INFO L82 PathProgramCache]: Analyzing trace with hash 784010707, now seen corresponding path program 1 times [2018-11-07 08:51:41,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:41,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:41,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:41,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:41,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:41,597 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 08:51:41,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:41,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:51:41,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:41,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:51:41,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:51:41,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:51:41,629 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:51:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:51:50,642 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-11-07 08:51:50,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:51:50,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 08:51:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:51:50,687 INFO L225 Difference]: With dead ends: 3093 [2018-11-07 08:51:50,688 INFO L226 Difference]: Without dead ends: 1971 [2018-11-07 08:51:50,698 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:51:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-11-07 08:51:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-11-07 08:51:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 08:51:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-11-07 08:51:50,884 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 63 [2018-11-07 08:51:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:51:50,886 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-11-07 08:51:50,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:51:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-11-07 08:51:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 08:51:50,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:51:50,896 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:51:50,896 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:51:50,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:51:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash -666764916, now seen corresponding path program 1 times [2018-11-07 08:51:50,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:51:50,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:50,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:51:50,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:51:50,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:51:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:51:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:51:51,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:51:51,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:51:51,414 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:51:51,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:51:51,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:51:51,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:51:51,418 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-11-07 08:52:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:05,135 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-11-07 08:52:05,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:52:05,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 08:52:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:05,179 INFO L225 Difference]: With dead ends: 5627 [2018-11-07 08:52:05,180 INFO L226 Difference]: Without dead ends: 3676 [2018-11-07 08:52:05,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-11-07 08:52:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-11-07 08:52:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-11-07 08:52:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-11-07 08:52:05,316 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 146 [2018-11-07 08:52:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:05,316 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-11-07 08:52:05,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-11-07 08:52:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 08:52:05,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:05,329 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:05,329 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:05,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:05,330 INFO L82 PathProgramCache]: Analyzing trace with hash -646191812, now seen corresponding path program 1 times [2018-11-07 08:52:05,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:05,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:05,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:05,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:05,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:05,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:05,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:52:05,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:05,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:52:05,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:52:05,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:52:05,592 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-11-07 08:52:15,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:15,286 INFO L93 Difference]: Finished difference Result 10947 states and 18497 transitions. [2018-11-07 08:52:15,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:52:15,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-11-07 08:52:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:15,333 INFO L225 Difference]: With dead ends: 10947 [2018-11-07 08:52:15,333 INFO L226 Difference]: Without dead ends: 7310 [2018-11-07 08:52:15,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:52:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2018-11-07 08:52:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 7122. [2018-11-07 08:52:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7122 states. [2018-11-07 08:52:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 10912 transitions. [2018-11-07 08:52:15,561 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 10912 transitions. Word has length 162 [2018-11-07 08:52:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:15,561 INFO L480 AbstractCegarLoop]: Abstraction has 7122 states and 10912 transitions. [2018-11-07 08:52:15,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:52:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 10912 transitions. [2018-11-07 08:52:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 08:52:15,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:15,567 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:15,567 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:15,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:15,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1378098232, now seen corresponding path program 1 times [2018-11-07 08:52:15,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:15,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:15,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:15,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:15,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:15,883 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:52:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:16,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:16,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:52:16,059 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:16,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:16,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:16,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:16,061 INFO L87 Difference]: Start difference. First operand 7122 states and 10912 transitions. Second operand 6 states. [2018-11-07 08:52:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:25,854 INFO L93 Difference]: Finished difference Result 19748 states and 31238 transitions. [2018-11-07 08:52:25,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:52:25,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-11-07 08:52:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:25,937 INFO L225 Difference]: With dead ends: 19748 [2018-11-07 08:52:25,938 INFO L226 Difference]: Without dead ends: 12632 [2018-11-07 08:52:25,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2018-11-07 08:52:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12430. [2018-11-07 08:52:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12430 states. [2018-11-07 08:52:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12430 states to 12430 states and 18009 transitions. [2018-11-07 08:52:26,354 INFO L78 Accepts]: Start accepts. Automaton has 12430 states and 18009 transitions. Word has length 199 [2018-11-07 08:52:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:26,355 INFO L480 AbstractCegarLoop]: Abstraction has 12430 states and 18009 transitions. [2018-11-07 08:52:26,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12430 states and 18009 transitions. [2018-11-07 08:52:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 08:52:26,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:26,364 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:26,365 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:26,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1937080759, now seen corresponding path program 1 times [2018-11-07 08:52:26,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:26,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:26,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:26,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:26,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:26,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:26,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:52:26,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:26,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:26,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:26,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:26,795 INFO L87 Difference]: Start difference. First operand 12430 states and 18009 transitions. Second operand 6 states. [2018-11-07 08:52:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:40,832 INFO L93 Difference]: Finished difference Result 42981 states and 69563 transitions. [2018-11-07 08:52:40,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 08:52:40,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-11-07 08:52:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:41,010 INFO L225 Difference]: With dead ends: 42981 [2018-11-07 08:52:41,010 INFO L226 Difference]: Without dead ends: 30557 [2018-11-07 08:52:41,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:52:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30557 states. [2018-11-07 08:52:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30557 to 30318. [2018-11-07 08:52:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30318 states. [2018-11-07 08:52:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30318 states to 30318 states and 43989 transitions. [2018-11-07 08:52:42,358 INFO L78 Accepts]: Start accepts. Automaton has 30318 states and 43989 transitions. Word has length 221 [2018-11-07 08:52:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:42,358 INFO L480 AbstractCegarLoop]: Abstraction has 30318 states and 43989 transitions. [2018-11-07 08:52:42,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 30318 states and 43989 transitions. [2018-11-07 08:52:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 08:52:42,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:42,374 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:52:42,374 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:42,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash -561084943, now seen corresponding path program 1 times [2018-11-07 08:52:42,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:42,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:42,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:42,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:42,377 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:42,752 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:52:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:52:43,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:52:43,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:52:43,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:43,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:43,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:43,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:43,202 INFO L87 Difference]: Start difference. First operand 30318 states and 43989 transitions. Second operand 6 states. [2018-11-07 08:52:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:52:54,277 INFO L93 Difference]: Finished difference Result 73864 states and 116117 transitions. [2018-11-07 08:52:54,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:52:54,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-11-07 08:52:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:52:54,491 INFO L225 Difference]: With dead ends: 73864 [2018-11-07 08:52:54,492 INFO L226 Difference]: Without dead ends: 43552 [2018-11-07 08:52:54,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:52:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43552 states. [2018-11-07 08:52:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43552 to 43242. [2018-11-07 08:52:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43242 states. [2018-11-07 08:52:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43242 states to 43242 states and 61380 transitions. [2018-11-07 08:52:55,704 INFO L78 Accepts]: Start accepts. Automaton has 43242 states and 61380 transitions. Word has length 244 [2018-11-07 08:52:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:52:55,704 INFO L480 AbstractCegarLoop]: Abstraction has 43242 states and 61380 transitions. [2018-11-07 08:52:55,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:52:55,705 INFO L276 IsEmpty]: Start isEmpty. Operand 43242 states and 61380 transitions. [2018-11-07 08:52:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 08:52:55,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:52:55,724 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:52:55,724 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:52:55,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:55,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1537806897, now seen corresponding path program 1 times [2018-11-07 08:52:55,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:52:55,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:55,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:52:55,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:52:55,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:52:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:52:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 112 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:52:56,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:52:56,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:52:56,077 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 08:52:56,083 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3031], [3033], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:52:56,164 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:52:56,164 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:52:56,797 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:52:56,801 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:52:56,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:52:56,843 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:52:57,556 INFO L227 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 71.46% of their original sizes. [2018-11-07 08:52:57,557 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:52:57,789 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-11-07 08:52:57,789 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:52:57,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:52:57,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:52:57,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:52:57,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:52:57,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:52:57,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:52:57,792 INFO L87 Difference]: Start difference. First operand 43242 states and 61380 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown