java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem16_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:26:37,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:26:37,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:26:37,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:26:37,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:26:37,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:26:37,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:26:37,989 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:26:37,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:26:37,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:26:37,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:26:37,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:26:37,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:26:37,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:26:37,998 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:26:37,999 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:26:38,000 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:26:38,003 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:26:38,010 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:26:38,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:26:38,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:26:38,017 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:26:38,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:26:38,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:26:38,022 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:26:38,023 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:26:38,024 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:26:38,024 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:26:38,025 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:26:38,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:26:38,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:26:38,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:26:38,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:26:38,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:26:38,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:26:38,030 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:26:38,031 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:26:38,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:26:38,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:26:38,048 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:26:38,048 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:26:38,048 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:26:38,051 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:26:38,051 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:26:38,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:26:38,051 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:26:38,051 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:26:38,052 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:26:38,052 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:26:38,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:26:38,053 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:26:38,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:26:38,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:26:38,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:26:38,056 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:26:38,056 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:26:38,056 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:26:38,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:26:38,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:26:38,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:26:38,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:26:38,057 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:26:38,058 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:26:38,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:26:38,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:26:38,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:26:38,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:26:38,144 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:26:38,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label55_true-unreach-call.c [2018-10-27 08:26:38,211 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e7c8122/d1badc48fbed46ae9cff9c4fedd0a966/FLAGea990a945 [2018-10-27 08:26:38,835 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:26:38,836 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label55_true-unreach-call.c [2018-10-27 08:26:38,852 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e7c8122/d1badc48fbed46ae9cff9c4fedd0a966/FLAGea990a945 [2018-10-27 08:26:38,868 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e7c8122/d1badc48fbed46ae9cff9c4fedd0a966 [2018-10-27 08:26:38,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:26:38,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:26:38,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:26:38,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:26:38,886 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:26:38,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:26:38" (1/1) ... [2018-10-27 08:26:38,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:38, skipping insertion in model container [2018-10-27 08:26:38,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:26:38" (1/1) ... [2018-10-27 08:26:38,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:26:38,989 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:26:39,718 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:26:39,723 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:26:39,974 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:26:39,994 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:26:39,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39 WrapperNode [2018-10-27 08:26:39,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:26:39,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:26:39,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:26:39,996 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:26:40,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:26:40,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:26:40,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:26:40,314 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:26:40,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... [2018-10-27 08:26:40,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:26:40,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:26:40,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:26:40,452 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:26:40,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:26:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:26:40,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:26:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:26:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:26:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:26:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:26:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:26:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:26:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:26:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:26:47,145 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:26:47,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:26:47 BoogieIcfgContainer [2018-10-27 08:26:47,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:26:47,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:26:47,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:26:47,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:26:47,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:26:38" (1/3) ... [2018-10-27 08:26:47,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ffccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:26:47, skipping insertion in model container [2018-10-27 08:26:47,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:26:39" (2/3) ... [2018-10-27 08:26:47,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2ffccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:26:47, skipping insertion in model container [2018-10-27 08:26:47,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:26:47" (3/3) ... [2018-10-27 08:26:47,154 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label55_true-unreach-call.c [2018-10-27 08:26:47,164 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:26:47,173 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:26:47,188 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:26:47,227 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:26:47,227 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:26:47,227 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:26:47,227 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:26:47,228 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:26:47,228 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:26:47,228 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:26:47,228 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:26:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:26:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-27 08:26:47,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:47,272 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:26:47,274 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:47,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash 886904748, now seen corresponding path program 1 times [2018-10-27 08:26:47,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:47,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:47,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:47,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:47,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:47,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:26:47,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:47,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:26:47,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:26:47,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:26:47,842 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 08:26:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:26:52,776 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 08:26:52,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:26:52,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-10-27 08:26:52,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:26:52,804 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 08:26:52,804 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 08:26:52,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:26:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 08:26:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 08:26:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 08:26:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-27 08:26:52,977 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 64 [2018-10-27 08:26:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:26:52,978 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-27 08:26:52,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:26:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-27 08:26:52,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-27 08:26:52,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:26:52,994 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:26:52,995 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:26:52,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:26:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash -350572761, now seen corresponding path program 1 times [2018-10-27 08:26:52,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:26:52,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:52,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:26:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:26:52,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:26:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:26:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:26:53,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:26:53,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:26:53,451 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:26:53,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:26:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:26:53,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:26:53,454 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-27 08:27:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:01,462 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-27 08:27:01,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:27:01,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-27 08:27:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:01,480 INFO L225 Difference]: With dead ends: 2184 [2018-10-27 08:27:01,480 INFO L226 Difference]: Without dead ends: 1446 [2018-10-27 08:27:01,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:27:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-27 08:27:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-27 08:27:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-27 08:27:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-27 08:27:01,550 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 157 [2018-10-27 08:27:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:01,551 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-27 08:27:01,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:27:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-27 08:27:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-27 08:27:01,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:01,570 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:27:01,571 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:01,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash -10136240, now seen corresponding path program 1 times [2018-10-27 08:27:01,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:01,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:01,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:01,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:01,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 114 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:27:01,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:01,911 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:01,913 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-10-27 08:27:01,915 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:01,965 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:01,966 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:02,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:02,495 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:27:02,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:02,543 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:03,210 INFO L227 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 78.11% of their original sizes. [2018-10-27 08:27:03,210 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:03,528 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-10-27 08:27:03,534 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:03,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:03,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:27:03,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:03,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:27:03,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:27:03,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:27:03,538 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 6 states. [2018-10-27 08:27:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:43,231 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-27 08:27:43,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:27:43,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2018-10-27 08:27:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:43,241 INFO L225 Difference]: With dead ends: 3184 [2018-10-27 08:27:43,241 INFO L226 Difference]: Without dead ends: 1765 [2018-10-27 08:27:43,246 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:27:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-27 08:27:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-27 08:27:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-27 08:27:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-27 08:27:43,290 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 268 [2018-10-27 08:27:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:43,291 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-27 08:27:43,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:27:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-27 08:27:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-27 08:27:43,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:43,297 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:27:43,298 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:43,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:43,298 INFO L82 PathProgramCache]: Analyzing trace with hash 448622162, now seen corresponding path program 1 times [2018-10-27 08:27:43,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:43,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:43,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:43,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:43,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:43,665 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:27:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 177 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:27:44,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:44,200 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:44,200 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-10-27 08:27:44,201 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:44,210 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:44,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:44,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:44,443 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:27:44,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:44,479 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:44,858 INFO L227 lantSequenceWeakener]: Weakened 357 states. On average, predicates are now at 80.64% of their original sizes. [2018-10-27 08:27:44,858 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:45,001 INFO L415 sIntCurrentIteration]: We unified 359 AI predicates to 359 [2018-10-27 08:27:45,002 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:45,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:45,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:27:45,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:45,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:27:45,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:27:45,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:27:45,004 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 10 states. [2018-10-27 08:29:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:39,515 INFO L93 Difference]: Finished difference Result 5965 states and 9412 transitions. [2018-10-27 08:29:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 08:29:39,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 360 [2018-10-27 08:29:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:39,539 INFO L225 Difference]: With dead ends: 5965 [2018-10-27 08:29:39,539 INFO L226 Difference]: Without dead ends: 4546 [2018-10-27 08:29:39,548 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 369 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:29:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-10-27 08:29:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4522. [2018-10-27 08:29:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2018-10-27 08:29:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 5610 transitions. [2018-10-27 08:29:39,657 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 5610 transitions. Word has length 360 [2018-10-27 08:29:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:39,658 INFO L481 AbstractCegarLoop]: Abstraction has 4522 states and 5610 transitions. [2018-10-27 08:29:39,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:29:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 5610 transitions. [2018-10-27 08:29:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-27 08:29:39,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:39,674 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:29:39,674 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:39,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1274457897, now seen corresponding path program 1 times [2018-10-27 08:29:39,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:39,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:39,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:39,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:39,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 177 proven. 235 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:29:40,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:40,316 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:29:40,316 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-10-27 08:29:40,317 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:29:40,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:29:40,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:29:40,612 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:29:40,613 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:29:40,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:40,655 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:29:41,134 INFO L227 lantSequenceWeakener]: Weakened 514 states. On average, predicates are now at 77.75% of their original sizes. [2018-10-27 08:29:41,135 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:29:41,434 INFO L415 sIntCurrentIteration]: We unified 516 AI predicates to 516 [2018-10-27 08:29:41,434 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:29:41,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:29:41,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:29:41,435 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:29:41,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:29:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:29:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:29:41,436 INFO L87 Difference]: Start difference. First operand 4522 states and 5610 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown