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/Problem18_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:34:04,206 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:34:04,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:34:04,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:34:04,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:34:04,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:34:04,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:34:04,226 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:34:04,228 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:34:04,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:34:04,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:34:04,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:34:04,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:34:04,232 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:34:04,233 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:34:04,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:34:04,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:34:04,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:34:04,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:34:04,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:34:04,246 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:34:04,247 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:34:04,253 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:34:04,253 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:34:04,254 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:34:04,254 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:34:04,255 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:34:04,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:34:04,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:34:04,263 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:34:04,265 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:34:04,266 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:34:04,266 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:34:04,266 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:34:04,267 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:34:04,268 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:34:04,269 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 09:34:04,298 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:34:04,299 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:34:04,303 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:34:04,304 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:34:04,304 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:34:04,304 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:34:04,304 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:34:04,304 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:34:04,305 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:34:04,307 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:34:04,307 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:34:04,307 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:34:04,307 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:34:04,308 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:34:04,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:34:04,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:34:04,309 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:34:04,309 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:34:04,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:34:04,309 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:34:04,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:34:04,310 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:34:04,310 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:34:04,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:34:04,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:34:04,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:34:04,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:34:04,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:34:04,314 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:34:04,315 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:34:04,315 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:34:04,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:34:04,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:34:04,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:34:04,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:34:04,400 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:34:04,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-11-07 09:34:04,469 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3e1f896/d975d1a5089f4322954edd78371447f5/FLAG6933d2580 [2018-11-07 09:34:05,162 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:34:05,163 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-11-07 09:34:05,186 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3e1f896/d975d1a5089f4322954edd78371447f5/FLAG6933d2580 [2018-11-07 09:34:05,202 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da3e1f896/d975d1a5089f4322954edd78371447f5 [2018-11-07 09:34:05,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:34:05,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:34:05,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:34:05,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:34:05,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:34:05,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:05" (1/1) ... [2018-11-07 09:34:05,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:05, skipping insertion in model container [2018-11-07 09:34:05,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:34:05" (1/1) ... [2018-11-07 09:34:05,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:34:05,387 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:34:06,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:34:06,520 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:34:07,000 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:34:07,030 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:34:07,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07 WrapperNode [2018-11-07 09:34:07,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:34:07,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:34:07,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:34:07,032 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:34:07,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:34:07,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:34:07,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:34:07,387 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:34:07,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (1/1) ... [2018-11-07 09:34:07,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:34:07,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:34:07,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:34:07,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:34:07,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (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 09:34:07,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:34:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:34:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:34:07,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:34:07,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:34:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:34:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:34:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:34:07,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:34:07,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:34:07,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:34:07,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:34:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:34:14,857 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:34:14,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:14 BoogieIcfgContainer [2018-11-07 09:34:14,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:34:14,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:34:14,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:34:14,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:34:14,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:34:05" (1/3) ... [2018-11-07 09:34:14,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:14, skipping insertion in model container [2018-11-07 09:34:14,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:34:07" (2/3) ... [2018-11-07 09:34:14,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:34:14, skipping insertion in model container [2018-11-07 09:34:14,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:34:14" (3/3) ... [2018-11-07 09:34:14,866 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-11-07 09:34:14,876 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:34:14,885 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:34:14,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:34:14,948 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:34:14,948 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:34:14,949 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:34:14,949 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:34:14,949 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:34:14,949 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:34:14,949 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:34:14,950 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:34:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:34:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 09:34:15,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:15,004 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] [2018-11-07 09:34:15,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:15,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-11-07 09:34:15,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:15,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:15,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:15,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:15,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:15,564 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 09:34:15,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:15,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:34:15,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:15,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:34:15,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:34:15,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:34:15,594 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:34:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:21,984 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:34:21,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:34:21,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-11-07 09:34:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:22,032 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:34:22,033 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:34:22,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:34:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:34:22,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:34:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:34:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 09:34:22,200 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-11-07 09:34:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:22,200 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 09:34:22,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:34:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 09:34:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 09:34:22,208 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:22,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:22,209 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:22,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-11-07 09:34:22,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:22,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:22,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:22,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:22,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:34:22,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:22,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:34:22,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:22,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:34:22,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:34:22,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:34:22,491 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 09:34:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:31,093 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 09:34:31,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:34:31,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-07 09:34:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:31,119 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 09:34:31,120 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 09:34:31,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:34:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 09:34:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 09:34:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 09:34:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 09:34:31,250 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-11-07 09:34:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:31,251 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 09:34:31,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:34:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 09:34:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 09:34:31,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:31,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:31,261 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:31,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:31,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-11-07 09:34:31,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:31,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:31,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:31,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:31,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:34:31,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:31,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:34:31,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:31,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:34:31,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:34:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:31,503 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 09:34:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:42,394 INFO L93 Difference]: Finished difference Result 11199 states and 19620 transitions. [2018-11-07 09:34:42,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:34:42,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 09:34:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:42,464 INFO L225 Difference]: With dead ends: 11199 [2018-11-07 09:34:42,464 INFO L226 Difference]: Without dead ends: 8280 [2018-11-07 09:34:42,494 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 09:34:42,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-07 09:34:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-07 09:34:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-07 09:34:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12152 transitions. [2018-11-07 09:34:42,759 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12152 transitions. Word has length 130 [2018-11-07 09:34:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:42,759 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12152 transitions. [2018-11-07 09:34:42,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:34:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12152 transitions. [2018-11-07 09:34:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 09:34:42,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:42,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:34:42,764 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:42,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:42,764 INFO L82 PathProgramCache]: Analyzing trace with hash 818558682, now seen corresponding path program 1 times [2018-11-07 09:34:42,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:42,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:42,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:42,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:42,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:34:42,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:34:42,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:34:42,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:42,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:34:42,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:34:42,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:34:42,986 INFO L87 Difference]: Start difference. First operand 8210 states and 12152 transitions. Second operand 4 states. [2018-11-07 09:34:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:34:50,514 INFO L93 Difference]: Finished difference Result 30818 states and 49207 transitions. [2018-11-07 09:34:50,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:34:50,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-11-07 09:34:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:34:50,688 INFO L225 Difference]: With dead ends: 30818 [2018-11-07 09:34:50,689 INFO L226 Difference]: Without dead ends: 22614 [2018-11-07 09:34:50,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 09:34:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22614 states. [2018-11-07 09:34:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22614 to 22614. [2018-11-07 09:34:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22614 states. [2018-11-07 09:34:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22614 states to 22614 states and 33754 transitions. [2018-11-07 09:34:51,403 INFO L78 Accepts]: Start accepts. Automaton has 22614 states and 33754 transitions. Word has length 152 [2018-11-07 09:34:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:34:51,404 INFO L480 AbstractCegarLoop]: Abstraction has 22614 states and 33754 transitions. [2018-11-07 09:34:51,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:34:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 22614 states and 33754 transitions. [2018-11-07 09:34:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 09:34:51,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:34:51,415 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, 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 09:34:51,415 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:34:51,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2056591124, now seen corresponding path program 1 times [2018-11-07 09:34:51,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:34:51,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:51,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:34:51,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:34:51,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:34:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:34:51,664 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:34:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:34:51,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:34:51,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:34:51,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 09:34:51,911 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2220], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:34:51,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:34:51,984 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:34:52,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:34:52,525 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:34:52,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:34:52,567 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:34:53,201 INFO L227 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 78.09% of their original sizes. [2018-11-07 09:34:53,201 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:34:53,451 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 09:34:53,452 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:34:53,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:34:53,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 09:34:53,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:34:53,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:34:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:34:53,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:34:53,455 INFO L87 Difference]: Start difference. First operand 22614 states and 33754 transitions. Second operand 6 states. [2018-11-07 09:36:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:36:55,184 INFO L93 Difference]: Finished difference Result 45927 states and 68354 transitions. [2018-11-07 09:36:55,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:36:55,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2018-11-07 09:36:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:36:55,293 INFO L225 Difference]: With dead ends: 45927 [2018-11-07 09:36:55,293 INFO L226 Difference]: Without dead ends: 23319 [2018-11-07 09:36:55,353 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:36:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23319 states. [2018-11-07 09:36:55,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23319 to 23317. [2018-11-07 09:36:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23317 states. [2018-11-07 09:36:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 34469 transitions. [2018-11-07 09:36:55,913 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 34469 transitions. Word has length 220 [2018-11-07 09:36:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:36:55,913 INFO L480 AbstractCegarLoop]: Abstraction has 23317 states and 34469 transitions. [2018-11-07 09:36:55,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:36:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 34469 transitions. [2018-11-07 09:36:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-11-07 09:36:55,930 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:36:55,930 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:36:55,931 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:36:55,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:55,931 INFO L82 PathProgramCache]: Analyzing trace with hash -718620913, now seen corresponding path program 1 times [2018-11-07 09:36:55,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:36:55,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:55,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:36:55,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:36:55,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:36:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:36:56,463 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:36:56,668 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:36:56,891 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:36:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 200 proven. 172 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:36:57,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:36:57,535 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:36:57,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 408 with the following transitions: [2018-11-07 09:36:57,536 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2220], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:36:57,544 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:36:57,544 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:36:57,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:36:57,807 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:36:57,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:36:57,846 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:36:58,239 INFO L227 lantSequenceWeakener]: Weakened 404 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-07 09:36:58,240 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:36:58,607 INFO L415 sIntCurrentIteration]: We unified 406 AI predicates to 406 [2018-11-07 09:36:58,607 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:36:58,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:36:58,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:36:58,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:36:58,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:36:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:36:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:36:58,609 INFO L87 Difference]: Start difference. First operand 23317 states and 34469 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown