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_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:15:21,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:15:21,496 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:15:21,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:15:21,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:15:21,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:15:21,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:15:21,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:15:21,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:15:21,522 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:15:21,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:15:21,524 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:15:21,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:15:21,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:15:21,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:15:21,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:15:21,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:15:21,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:15:21,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:15:21,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:15:21,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:15:21,553 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:15:21,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:15:21,555 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:15:21,558 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:15:21,559 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:15:21,560 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:15:21,560 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:15:21,564 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:15:21,565 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:15:21,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:15:21,566 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:15:21,566 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:15:21,567 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:15:21,568 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:15:21,568 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:15:21,568 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 06:15:21,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:15:21,598 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:15:21,599 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:15:21,599 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:15:21,600 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:15:21,600 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:15:21,600 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:15:21,600 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:15:21,600 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:15:21,601 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:15:21,601 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:15:21,601 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:15:21,601 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:15:21,601 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:15:21,602 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:15:21,603 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:15:21,605 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:15:21,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:15:21,606 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:15:21,606 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:15:21,606 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:15:21,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:15:21,607 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:15:21,607 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:15:21,607 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:15:21,607 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:15:21,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:15:21,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:15:21,608 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:15:21,608 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:15:21,608 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:15:21,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:15:21,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:15:21,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:15:21,690 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:15:21,690 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:15:21,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-07 06:15:21,755 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9a81a7/4a99cb0671084eb192af1d6826d7ab47/FLAG2be02f963 [2018-11-07 06:15:22,526 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:15:22,527 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-07 06:15:22,565 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9a81a7/4a99cb0671084eb192af1d6826d7ab47/FLAG2be02f963 [2018-11-07 06:15:22,583 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed9a81a7/4a99cb0671084eb192af1d6826d7ab47 [2018-11-07 06:15:22,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:15:22,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:15:22,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:15:22,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:15:22,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:15:22,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:22" (1/1) ... [2018-11-07 06:15:22,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8c2953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:22, skipping insertion in model container [2018-11-07 06:15:22,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:22" (1/1) ... [2018-11-07 06:15:22,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:15:22,828 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:15:24,422 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:15:24,427 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:15:25,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:15:25,369 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:15:25,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25 WrapperNode [2018-11-07 06:15:25,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:15:25,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:15:25,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:15:25,371 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:15:25,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:25,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:25,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:15:25,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:15:25,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:15:25,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:15:25,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:25,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:25,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:25,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:26,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:26,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:26,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (1/1) ... [2018-11-07 06:15:26,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:15:26,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:15:26,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:15:26,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:15:26,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (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 06:15:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:15:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:15:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:15:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 06:15:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 06:15:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:15:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:15:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:15:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:15:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:15:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:15:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:15:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:15:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:15:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:15:36,500 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:15:36,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:36 BoogieIcfgContainer [2018-11-07 06:15:36,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:15:36,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:15:36,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:15:36,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:15:36,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:15:22" (1/3) ... [2018-11-07 06:15:36,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733a5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:36, skipping insertion in model container [2018-11-07 06:15:36,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:25" (2/3) ... [2018-11-07 06:15:36,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5733a5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:36, skipping insertion in model container [2018-11-07 06:15:36,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:36" (3/3) ... [2018-11-07 06:15:36,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label12_false-unreach-call.c [2018-11-07 06:15:36,520 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:15:36,531 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:15:36,549 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:15:36,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:15:36,597 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:15:36,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:15:36,597 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:15:36,598 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:15:36,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:15:36,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:15:36,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:15:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 06:15:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 06:15:36,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:15:36,666 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:15:36,668 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:15:36,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:15:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash 190790252, now seen corresponding path program 1 times [2018-11-07 06:15:36,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:15:36,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:15:36,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:15:36,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:15:36,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:15:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:15:37,123 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 06:15:37,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:15:37,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:15:37,126 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:15:37,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:15:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:15:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:15:37,154 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 06:15:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:15:49,312 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 06:15:49,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:15:49,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-07 06:15:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:15:49,366 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 06:15:49,366 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 06:15:49,380 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:15:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 06:15:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 06:15:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 06:15:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 06:15:49,608 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 16 [2018-11-07 06:15:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:15:49,609 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 06:15:49,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:15:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 06:15:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 06:15:49,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:15:49,618 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:15:49,620 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:15:49,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:15:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1385372312, now seen corresponding path program 1 times [2018-11-07 06:15:49,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:15:49,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:15:49,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:15:49,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:15:49,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:15:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:15:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:15:49,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:15:49,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:15:49,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:15:49,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:15:49,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:15:49,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:15:50,002 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 06:16:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:16:02,401 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 06:16:02,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:16:02,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-07 06:16:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:16:02,426 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 06:16:02,427 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 06:16:02,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 06:16:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 06:16:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 06:16:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 06:16:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 06:16:02,577 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 86 [2018-11-07 06:16:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:16:02,578 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 06:16:02,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:16:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 06:16:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-07 06:16:02,585 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:16:02,585 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:16:02,585 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:16:02,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:16:02,589 INFO L82 PathProgramCache]: Analyzing trace with hash 440259844, now seen corresponding path program 1 times [2018-11-07 06:16:02,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:16:02,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:02,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:16:02,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:02,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:16:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:16:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:16:02,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:16:02,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:16:02,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:16:02,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:16:02,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:16:02,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:16:02,863 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 06:16:11,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:16:11,802 INFO L93 Difference]: Finished difference Result 10958 states and 17870 transitions. [2018-11-07 06:16:11,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:16:11,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-11-07 06:16:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:16:11,846 INFO L225 Difference]: With dead ends: 10958 [2018-11-07 06:16:11,847 INFO L226 Difference]: Without dead ends: 7277 [2018-11-07 06:16:11,862 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 06:16:11,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2018-11-07 06:16:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7170. [2018-11-07 06:16:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7170 states. [2018-11-07 06:16:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10523 transitions. [2018-11-07 06:16:12,063 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 10523 transitions. Word has length 88 [2018-11-07 06:16:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:16:12,064 INFO L480 AbstractCegarLoop]: Abstraction has 7170 states and 10523 transitions. [2018-11-07 06:16:12,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:16:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 10523 transitions. [2018-11-07 06:16:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 06:16:12,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:16:12,068 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:16:12,068 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:16:12,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:16:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash -567644532, now seen corresponding path program 1 times [2018-11-07 06:16:12,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:16:12,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:12,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:16:12,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:12,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:16:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:16:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:16:12,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:16:12,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:16:12,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:16:12,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:16:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:16:12,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:16:12,203 INFO L87 Difference]: Start difference. First operand 7170 states and 10523 transitions. Second operand 4 states. [2018-11-07 06:16:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:16:21,585 INFO L93 Difference]: Finished difference Result 27637 states and 43195 transitions. [2018-11-07 06:16:21,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:16:21,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 06:16:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:16:21,684 INFO L225 Difference]: With dead ends: 27637 [2018-11-07 06:16:21,684 INFO L226 Difference]: Without dead ends: 20473 [2018-11-07 06:16:21,739 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:16:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2018-11-07 06:16:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20436. [2018-11-07 06:16:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20436 states. [2018-11-07 06:16:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20436 states to 20436 states and 29065 transitions. [2018-11-07 06:16:22,322 INFO L78 Accepts]: Start accepts. Automaton has 20436 states and 29065 transitions. Word has length 132 [2018-11-07 06:16:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:16:22,323 INFO L480 AbstractCegarLoop]: Abstraction has 20436 states and 29065 transitions. [2018-11-07 06:16:22,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:16:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 20436 states and 29065 transitions. [2018-11-07 06:16:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 06:16:22,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:16:22,339 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:16:22,344 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:16:22,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:16:22,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2019208682, now seen corresponding path program 1 times [2018-11-07 06:16:22,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:16:22,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:22,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:16:22,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:16:22,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:16:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:16:22,733 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:16:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:16:23,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:16:23,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:16:23,129 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 06:16:23,135 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [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], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 06:16:23,232 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:16:23,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:16:23,832 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:16:23,834 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 06:16:23,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:16:23,880 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:16:24,557 INFO L227 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 70.69% of their original sizes. [2018-11-07 06:16:24,558 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:16:24,784 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-07 06:16:24,784 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:16:24,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:16:24,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 06:16:24,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:16:24,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:16:24,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:16:24,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:16:24,789 INFO L87 Difference]: Start difference. First operand 20436 states and 29065 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown