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/Problem17_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:22:31,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:22:31,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:22:31,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:22:31,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:22:31,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:22:31,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:22:31,064 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:22:31,067 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:22:31,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:22:31,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:22:31,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:22:31,075 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:22:31,076 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:22:31,077 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:22:31,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:22:31,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:22:31,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:22:31,090 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:22:31,095 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:22:31,096 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:22:31,099 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:22:31,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:22:31,105 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:22:31,106 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:22:31,107 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:22:31,108 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:22:31,109 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:22:31,109 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:22:31,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:22:31,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:22:31,112 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:22:31,115 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 09:22:31,130 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:22:31,131 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:22:31,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:22:31,132 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:22:31,132 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:22:31,132 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:22:31,132 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:22:31,132 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:22:31,133 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:22:31,133 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:22:31,133 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:22:31,133 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:22:31,133 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:22:31,134 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:22:31,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:22:31,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:22:31,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:22:31,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:22:31,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:22:31,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:22:31,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:22:31,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:22:31,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:22:31,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:22:31,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:22:31,137 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:22:31,137 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:22:31,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:22:31,138 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:22:31,138 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:22:31,138 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:22:31,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:22:31,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:22:31,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:22:31,207 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:22:31,207 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:22:31,208 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-11-07 09:22:31,271 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713d2aec7/01fbfb1cf42847779bfc8211f30ec843/FLAG49827f24e [2018-11-07 09:22:32,072 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:22:32,073 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-11-07 09:22:32,099 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713d2aec7/01fbfb1cf42847779bfc8211f30ec843/FLAG49827f24e [2018-11-07 09:22:32,117 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/713d2aec7/01fbfb1cf42847779bfc8211f30ec843 [2018-11-07 09:22:32,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:22:32,132 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:22:32,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:22:32,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:22:32,138 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:22:32,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:22:32" (1/1) ... [2018-11-07 09:22:32,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:32, skipping insertion in model container [2018-11-07 09:22:32,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:22:32" (1/1) ... [2018-11-07 09:22:32,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:22:32,287 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:22:33,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:22:33,291 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:22:33,685 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:22:33,708 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:22:33,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33 WrapperNode [2018-11-07 09:22:33,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:22:33,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:22:33,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:22:33,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:22:33,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:22:34,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:22:34,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:22:34,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:22:34,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (1/1) ... [2018-11-07 09:22:34,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:22:34,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:22:34,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:22:34,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:22:34,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (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 09:22:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:22:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:22:34,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:22:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:22:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:22:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:22:34,305 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:22:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:22:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:22:34,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:22:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:22:42,778 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:22:42,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:22:42 BoogieIcfgContainer [2018-11-07 09:22:42,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:22:42,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:22:42,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:22:42,784 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:22:42,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:22:32" (1/3) ... [2018-11-07 09:22:42,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73abaa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:22:42, skipping insertion in model container [2018-11-07 09:22:42,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:33" (2/3) ... [2018-11-07 09:22:42,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73abaa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:22:42, skipping insertion in model container [2018-11-07 09:22:42,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:22:42" (3/3) ... [2018-11-07 09:22:42,788 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03_true-unreach-call.c [2018-11-07 09:22:42,799 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:22:42,810 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:22:42,828 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:22:42,874 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:22:42,874 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:22:42,874 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:22:42,875 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:22:42,875 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:22:42,875 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:22:42,875 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:22:42,875 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:22:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:22:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-07 09:22:42,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:42,927 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:42,930 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:42,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1535738860, now seen corresponding path program 1 times [2018-11-07 09:22:42,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:42,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:42,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:42,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:42,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:43,502 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 09:22:43,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:43,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:22:43,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:43,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:22:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:22:43,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:22:43,532 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:22:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:54,915 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 09:22:54,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:22:54,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-07 09:22:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:54,954 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 09:22:54,954 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 09:22:54,965 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 09:22:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 09:22:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1051. [2018-11-07 09:22:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-07 09:22:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1880 transitions. [2018-11-07 09:22:55,107 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1880 transitions. Word has length 56 [2018-11-07 09:22:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:55,108 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 1880 transitions. [2018-11-07 09:22:55,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:22:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1880 transitions. [2018-11-07 09:22:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 09:22:55,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:55,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:55,117 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:55,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:55,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1304567782, now seen corresponding path program 1 times [2018-11-07 09:22:55,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:55,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:55,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:55,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:55,120 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:55,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:55,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:22:55,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:55,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:22:55,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:22:55,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:22:55,446 INFO L87 Difference]: Start difference. First operand 1051 states and 1880 transitions. Second operand 5 states. [2018-11-07 09:23:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:03,368 INFO L93 Difference]: Finished difference Result 3028 states and 5532 transitions. [2018-11-07 09:23:03,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:23:03,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-11-07 09:23:03,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:03,387 INFO L225 Difference]: With dead ends: 3028 [2018-11-07 09:23:03,388 INFO L226 Difference]: Without dead ends: 1983 [2018-11-07 09:23:03,392 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 09:23:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-11-07 09:23:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1957. [2018-11-07 09:23:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 09:23:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3236 transitions. [2018-11-07 09:23:03,472 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3236 transitions. Word has length 128 [2018-11-07 09:23:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:03,473 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3236 transitions. [2018-11-07 09:23:03,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:23:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3236 transitions. [2018-11-07 09:23:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 09:23:03,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:03,477 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:03,478 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:03,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:03,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1286141214, now seen corresponding path program 1 times [2018-11-07 09:23:03,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:03,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:03,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:03,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:03,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:23:03,950 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:03,950 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:23:03,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-11-07 09:23:03,954 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:23:04,032 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:23:04,032 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:23:05,089 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:23:05,091 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:23:05,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:05,138 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:23:05,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:05,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:23:05,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:05,158 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:23:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:05,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:23:09,077 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-07 09:23:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:23:09,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:23:09,686 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 09:23:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:23:09,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:23:09,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 09:23:09,990 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:09,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:23:09,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:23:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-11-07 09:23:09,991 INFO L87 Difference]: Start difference. First operand 1957 states and 3236 transitions. Second operand 3 states. [2018-11-07 09:23:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:20,717 INFO L93 Difference]: Finished difference Result 5684 states and 9638 transitions. [2018-11-07 09:23:20,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:23:20,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-11-07 09:23:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:20,743 INFO L225 Difference]: With dead ends: 5684 [2018-11-07 09:23:20,744 INFO L226 Difference]: Without dead ends: 3733 [2018-11-07 09:23:20,760 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-11-07 09:23:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2018-11-07 09:23:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3731. [2018-11-07 09:23:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2018-11-07 09:23:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5523 transitions. [2018-11-07 09:23:20,885 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5523 transitions. Word has length 131 [2018-11-07 09:23:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:20,886 INFO L480 AbstractCegarLoop]: Abstraction has 3731 states and 5523 transitions. [2018-11-07 09:23:20,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:23:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5523 transitions. [2018-11-07 09:23:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 09:23:20,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:20,892 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:20,892 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:20,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:20,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1968123582, now seen corresponding path program 1 times [2018-11-07 09:23:20,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:20,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:20,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:20,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:20,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:23:21,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:23:21,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 09:23:21,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:21,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:23:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:23:21,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:23:21,659 INFO L87 Difference]: Start difference. First operand 3731 states and 5523 transitions. Second operand 7 states. [2018-11-07 09:23:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:34,948 INFO L93 Difference]: Finished difference Result 12828 states and 21539 transitions. [2018-11-07 09:23:34,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:23:34,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2018-11-07 09:23:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:35,016 INFO L225 Difference]: With dead ends: 12828 [2018-11-07 09:23:35,016 INFO L226 Difference]: Without dead ends: 9103 [2018-11-07 09:23:35,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:23:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9103 states. [2018-11-07 09:23:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9103 to 8968. [2018-11-07 09:23:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2018-11-07 09:23:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 13527 transitions. [2018-11-07 09:23:35,384 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 13527 transitions. Word has length 158 [2018-11-07 09:23:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:35,385 INFO L480 AbstractCegarLoop]: Abstraction has 8968 states and 13527 transitions. [2018-11-07 09:23:35,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:23:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 13527 transitions. [2018-11-07 09:23:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 09:23:35,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:35,395 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:23:35,395 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:35,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1891195745, now seen corresponding path program 1 times [2018-11-07 09:23:35,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:35,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:35,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:35,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:35,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:23:35,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:23:35,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:23:35,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:35,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:23:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:23:35,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:23:35,736 INFO L87 Difference]: Start difference. First operand 8968 states and 13527 transitions. Second operand 5 states. [2018-11-07 09:23:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:45,354 INFO L93 Difference]: Finished difference Result 29411 states and 48636 transitions. [2018-11-07 09:23:45,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:23:45,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-11-07 09:23:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:45,494 INFO L225 Difference]: With dead ends: 29411 [2018-11-07 09:23:45,494 INFO L226 Difference]: Without dead ends: 20449 [2018-11-07 09:23:45,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:23:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20449 states. [2018-11-07 09:23:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20449 to 20172. [2018-11-07 09:23:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20172 states. [2018-11-07 09:23:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20172 states to 20172 states and 28377 transitions. [2018-11-07 09:23:46,498 INFO L78 Accepts]: Start accepts. Automaton has 20172 states and 28377 transitions. Word has length 170 [2018-11-07 09:23:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:46,498 INFO L480 AbstractCegarLoop]: Abstraction has 20172 states and 28377 transitions. [2018-11-07 09:23:46,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:23:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20172 states and 28377 transitions. [2018-11-07 09:23:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-07 09:23:46,517 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:46,518 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:23:46,518 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:46,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1388015723, now seen corresponding path program 1 times [2018-11-07 09:23:46,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:46,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:46,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:46,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:46,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 09:23:47,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:47,517 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:23:47,517 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-11-07 09:23:47,518 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:23:47,526 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:23:47,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:23:48,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:23:48,033 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 09:23:48,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:48,068 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:23:48,748 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 75.66% of their original sizes. [2018-11-07 09:23:48,749 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:23:48,983 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-11-07 09:23:48,984 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:23:48,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:23:48,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-11-07 09:23:48,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:23:48,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:23:48,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:23:48,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:23:48,986 INFO L87 Difference]: Start difference. First operand 20172 states and 28377 transitions. Second operand 6 states. [2018-11-07 09:24:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:24:41,569 INFO L93 Difference]: Finished difference Result 40774 states and 57232 transitions. [2018-11-07 09:24:41,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:24:41,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-11-07 09:24:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:24:41,685 INFO L225 Difference]: With dead ends: 40774 [2018-11-07 09:24:41,685 INFO L226 Difference]: Without dead ends: 20608 [2018-11-07 09:24:41,773 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 238 GetRequests, 233 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 09:24:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20608 states. [2018-11-07 09:24:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20608 to 20606. [2018-11-07 09:24:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20606 states. [2018-11-07 09:24:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20606 states to 20606 states and 28825 transitions. [2018-11-07 09:24:42,339 INFO L78 Accepts]: Start accepts. Automaton has 20606 states and 28825 transitions. Word has length 238 [2018-11-07 09:24:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:24:42,339 INFO L480 AbstractCegarLoop]: Abstraction has 20606 states and 28825 transitions. [2018-11-07 09:24:42,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:24:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 20606 states and 28825 transitions. [2018-11-07 09:24:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-07 09:24:42,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:24:42,357 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-11-07 09:24:42,357 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:24:42,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2047962603, now seen corresponding path program 1 times [2018-11-07 09:24:42,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:24:42,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:42,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:42,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:42,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:24:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:42,680 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:24:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 99 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:24:43,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:43,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:24:43,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-07 09:24:43,161 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1400], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:24:43,179 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:24:43,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:24:43,681 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:24:43,681 INFO L272 AbstractInterpreter]: Visited 123 different actions 355 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:24:43,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:43,719 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:24:43,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:43,720 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:24:43,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:43,738 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:24:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:43,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:24:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:24:43,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:24:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:24:44,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:24:44,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:24:44,241 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:24:44,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:24:44,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:24:44,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:24:44,243 INFO L87 Difference]: Start difference. First operand 20606 states and 28825 transitions. Second operand 9 states. [2018-11-07 09:24:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:24:51,346 INFO L93 Difference]: Finished difference Result 44250 states and 64051 transitions. [2018-11-07 09:24:51,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:24:51,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2018-11-07 09:24:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:24:51,428 INFO L225 Difference]: With dead ends: 44250 [2018-11-07 09:24:51,428 INFO L226 Difference]: Without dead ends: 17945 [2018-11-07 09:24:51,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 488 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:24:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17945 states. [2018-11-07 09:24:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17945 to 17454. [2018-11-07 09:24:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17454 states. [2018-11-07 09:24:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17454 states to 17454 states and 21107 transitions. [2018-11-07 09:24:51,918 INFO L78 Accepts]: Start accepts. Automaton has 17454 states and 21107 transitions. Word has length 245 [2018-11-07 09:24:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:24:51,919 INFO L480 AbstractCegarLoop]: Abstraction has 17454 states and 21107 transitions. [2018-11-07 09:24:51,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:24:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17454 states and 21107 transitions. [2018-11-07 09:24:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-07 09:24:51,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:24:51,937 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:24:51,937 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:24:51,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1636144733, now seen corresponding path program 1 times [2018-11-07 09:24:51,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:24:51,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:51,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:51,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:51,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:24:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 247 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:24:52,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:52,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:24:52,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 304 with the following transitions: [2018-11-07 09:24:52,393 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:24:52,397 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:24:52,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:24:52,972 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:24:52,972 INFO L272 AbstractInterpreter]: Visited 98 different actions 197 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:24:53,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:53,009 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:24:53,009 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:53,009 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:24:53,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:53,028 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:24:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:53,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:24:55,392 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 09:24:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 247 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:24:57,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:24:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:24:58,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:24:58,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2018-11-07 09:24:58,065 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:24:58,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:24:58,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:24:58,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=88, Unknown=1, NotChecked=0, Total=132 [2018-11-07 09:24:58,067 INFO L87 Difference]: Start difference. First operand 17454 states and 21107 transitions. Second operand 10 states. [2018-11-07 09:25:33,801 WARN L179 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 56 DAG size of output: 48 Received shutdown request... [2018-11-07 09:26:28,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 09:26:28,860 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:26:28,871 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:26:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:26:28 BoogieIcfgContainer [2018-11-07 09:26:28,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:26:28,872 INFO L168 Benchmark]: Toolchain (without parser) took 236741.88 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 756.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,874 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:26:28,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1575.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 305.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -954.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,876 INFO L168 Benchmark]: Boogie Preprocessor took 210.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,877 INFO L168 Benchmark]: RCFGBuilder took 8553.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 449.2 MB). Peak memory consumption was 449.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,878 INFO L168 Benchmark]: TraceAbstraction took 226091.01 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 346.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:26:28,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1575.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 305.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -954.3 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8553.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 449.2 MB). Peak memory consumption was 449.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226091.01 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 346.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 155). Cancelled while BasicCegarLoop was constructing difference of abstraction (17454states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (13292 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 204.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2882 SDtfs, 14392 SDslu, 2514 SDs, 0 SdLazy, 25003 SolverSat, 5293 SolverUnsat, 75 SolverUnknown, 0 SolverNotchecked, 175.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1679 GetRequests, 1599 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20606occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9978284496033534 AbsIntWeakeningRatio, 0.11392405063291139 AbsIntAvgWeakeningVarsNumRemoved, 17.40928270042194 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 1436 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 2108 NumberOfCodeBlocks, 2108 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2773 ConstructedInterpolants, 111 QuantifiedInterpolants, 2837529 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1254 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 1855/2117 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown