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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:48:29,243 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:48:29,246 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:48:29,262 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:48:29,262 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:48:29,265 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:48:29,266 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:48:29,268 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:48:29,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:48:29,270 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:48:29,271 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:48:29,271 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:48:29,272 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:48:29,273 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:48:29,274 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:48:29,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:48:29,276 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:48:29,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:48:29,280 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:48:29,281 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:48:29,282 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:48:29,283 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:48:29,286 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:48:29,286 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:48:29,286 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:48:29,287 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:48:29,288 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:48:29,289 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:48:29,290 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:48:29,291 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:48:29,291 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:48:29,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:48:29,292 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:48:29,292 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:48:29,293 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:48:29,294 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:48:29,294 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:48:29,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:48:29,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:48:29,317 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:48:29,318 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:48:29,318 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:48:29,318 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:48:29,318 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:48:29,318 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:48:29,319 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:48:29,319 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:48:29,319 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:48:29,319 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:48:29,319 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:48:29,320 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:48:29,320 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:48:29,320 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:48:29,320 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:48:29,321 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:48:29,321 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:48:29,321 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:48:29,321 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:48:29,321 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:48:29,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:48:29,322 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:48:29,322 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:48:29,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:48:29,322 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:48:29,323 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:48:29,323 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:48:29,323 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:48:29,323 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:48:29,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:48:29,324 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:48:29,324 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:48:29,324 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:48:29,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:48:29,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:48:29,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:48:29,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:48:29,393 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:48:29,394 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c [2018-11-12 18:48:29,453 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91c83eb5/b411b33577ce4c8da71c00db64e9acc6/FLAGb4de19f71 [2018-11-12 18:48:30,247 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:48:30,248 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c [2018-11-12 18:48:30,284 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91c83eb5/b411b33577ce4c8da71c00db64e9acc6/FLAGb4de19f71 [2018-11-12 18:48:30,301 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91c83eb5/b411b33577ce4c8da71c00db64e9acc6 [2018-11-12 18:48:30,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:48:30,315 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:48:30,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:48:30,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:48:30,320 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:48:30,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:48:30" (1/1) ... [2018-11-12 18:48:30,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15afd13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:30, skipping insertion in model container [2018-11-12 18:48:30,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:48:30" (1/1) ... [2018-11-12 18:48:30,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:48:30,479 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:48:31,774 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:48:31,779 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:48:32,414 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:48:32,449 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:48:32,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32 WrapperNode [2018-11-12 18:48:32,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:48:32,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:48:32,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:48:32,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:48:32,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:48:32,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:48:32,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:48:32,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:48:32,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (1/1) ... [2018-11-12 18:48:32,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:48:32,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:48:32,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:48:32,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:48:32,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (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 [2018-11-12 18:48:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:48:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:48:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:48:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:48:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:48:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:48:33,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:48:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:48:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:48:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:48:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:48:33,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:48:33,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:48:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:48:33,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:48:42,266 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:48:42,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:48:42 BoogieIcfgContainer [2018-11-12 18:48:42,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:48:42,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:48:42,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:48:42,272 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:48:42,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:48:30" (1/3) ... [2018-11-12 18:48:42,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d98fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:48:42, skipping insertion in model container [2018-11-12 18:48:42,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:48:32" (2/3) ... [2018-11-12 18:48:42,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312d98fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:48:42, skipping insertion in model container [2018-11-12 18:48:42,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:48:42" (3/3) ... [2018-11-12 18:48:42,275 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label29_true-unreach-call.c [2018-11-12 18:48:42,286 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:48:42,298 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:48:42,316 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:48:42,362 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:48:42,362 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:48:42,363 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:48:42,363 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:48:42,363 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:48:42,363 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:48:42,363 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:48:42,363 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:48:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 18:48:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-12 18:48:42,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:48:42,522 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] [2018-11-12 18:48:42,524 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:48:42,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:42,544 INFO L82 PathProgramCache]: Analyzing trace with hash -648066108, now seen corresponding path program 1 times [2018-11-12 18:48:42,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:48:42,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:42,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:48:42,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:42,596 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:48:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:48:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:48:43,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:48:43,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:48:43,165 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:48:43,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:48:43,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:48:43,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:48:43,192 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-12 18:48:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:48:54,356 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-12 18:48:54,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:48:54,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-12 18:48:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:48:54,401 INFO L225 Difference]: With dead ends: 3234 [2018-11-12 18:48:54,401 INFO L226 Difference]: Without dead ends: 2388 [2018-11-12 18:48:54,413 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 [2018-11-12 18:48:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-12 18:48:54,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-12 18:48:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-12 18:48:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-12 18:48:54,612 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 62 [2018-11-12 18:48:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:48:54,613 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-12 18:48:54,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:48:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-12 18:48:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 18:48:54,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:48:54,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:48:54,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:48:54,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:48:54,625 INFO L82 PathProgramCache]: Analyzing trace with hash -267235377, now seen corresponding path program 1 times [2018-11-12 18:48:54,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:48:54,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:54,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:48:54,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:48:54,627 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:48:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:48:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:48:54,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:48:54,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:48:54,948 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:48:54,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:48:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:48:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:48:54,951 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 5 states. [2018-11-12 18:49:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:06,886 INFO L93 Difference]: Finished difference Result 7257 states and 11780 transitions. [2018-11-12 18:49:06,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 18:49:06,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-12 18:49:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:06,920 INFO L225 Difference]: With dead ends: 7257 [2018-11-12 18:49:06,921 INFO L226 Difference]: Without dead ends: 4875 [2018-11-12 18:49:06,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:49:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2018-11-12 18:49:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4829. [2018-11-12 18:49:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4829 states. [2018-11-12 18:49:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 7153 transitions. [2018-11-12 18:49:07,086 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 7153 transitions. Word has length 143 [2018-11-12 18:49:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:07,088 INFO L480 AbstractCegarLoop]: Abstraction has 4829 states and 7153 transitions. [2018-11-12 18:49:07,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:49:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 7153 transitions. [2018-11-12 18:49:07,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-12 18:49:07,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:07,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:49:07,093 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:07,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:07,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1673617562, now seen corresponding path program 1 times [2018-11-12 18:49:07,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:07,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:07,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:07,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:07,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:49:07,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:49:07,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:49:07,343 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:49:07,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:49:07,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:49:07,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:49:07,344 INFO L87 Difference]: Start difference. First operand 4829 states and 7153 transitions. Second operand 6 states. [2018-11-12 18:49:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:14,429 INFO L93 Difference]: Finished difference Result 14643 states and 22384 transitions. [2018-11-12 18:49:14,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:49:14,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-12 18:49:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:14,486 INFO L225 Difference]: With dead ends: 14643 [2018-11-12 18:49:14,486 INFO L226 Difference]: Without dead ends: 9820 [2018-11-12 18:49:14,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:49:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2018-11-12 18:49:14,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9698. [2018-11-12 18:49:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9698 states. [2018-11-12 18:49:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9698 states to 9698 states and 14207 transitions. [2018-11-12 18:49:14,762 INFO L78 Accepts]: Start accepts. Automaton has 9698 states and 14207 transitions. Word has length 176 [2018-11-12 18:49:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:14,763 INFO L480 AbstractCegarLoop]: Abstraction has 9698 states and 14207 transitions. [2018-11-12 18:49:14,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:49:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9698 states and 14207 transitions. [2018-11-12 18:49:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-12 18:49:14,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:14,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:49:14,767 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:14,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:14,767 INFO L82 PathProgramCache]: Analyzing trace with hash 924991159, now seen corresponding path program 1 times [2018-11-12 18:49:14,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:14,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:14,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:14,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:14,769 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:49:15,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:49:15,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:49:15,080 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:49:15,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:49:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:49:15,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:49:15,082 INFO L87 Difference]: Start difference. First operand 9698 states and 14207 transitions. Second operand 6 states. [2018-11-12 18:49:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:25,267 INFO L93 Difference]: Finished difference Result 33086 states and 50892 transitions. [2018-11-12 18:49:25,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:49:25,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-12 18:49:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:25,384 INFO L225 Difference]: With dead ends: 33086 [2018-11-12 18:49:25,384 INFO L226 Difference]: Without dead ends: 23394 [2018-11-12 18:49:25,438 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:49:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2018-11-12 18:49:25,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 23284. [2018-11-12 18:49:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23284 states. [2018-11-12 18:49:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23284 states to 23284 states and 33060 transitions. [2018-11-12 18:49:26,035 INFO L78 Accepts]: Start accepts. Automaton has 23284 states and 33060 transitions. Word has length 187 [2018-11-12 18:49:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:26,036 INFO L480 AbstractCegarLoop]: Abstraction has 23284 states and 33060 transitions. [2018-11-12 18:49:26,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:49:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 23284 states and 33060 transitions. [2018-11-12 18:49:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-12 18:49:26,041 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:26,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:49:26,041 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:26,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 862970119, now seen corresponding path program 1 times [2018-11-12 18:49:26,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:26,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:26,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:26,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:26,043 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:49:26,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:49:26,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:49:26,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:49:26,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:49:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:49:26,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:49:26,307 INFO L87 Difference]: Start difference. First operand 23284 states and 33060 transitions. Second operand 4 states. [2018-11-12 18:49:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:49:35,116 INFO L93 Difference]: Finished difference Result 56002 states and 81191 transitions. [2018-11-12 18:49:35,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:49:35,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2018-11-12 18:49:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:49:35,241 INFO L225 Difference]: With dead ends: 56002 [2018-11-12 18:49:35,241 INFO L226 Difference]: Without dead ends: 32724 [2018-11-12 18:49:35,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:49:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32724 states. [2018-11-12 18:49:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32724 to 32714. [2018-11-12 18:49:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32714 states. [2018-11-12 18:49:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32714 states to 32714 states and 42365 transitions. [2018-11-12 18:49:36,074 INFO L78 Accepts]: Start accepts. Automaton has 32714 states and 42365 transitions. Word has length 211 [2018-11-12 18:49:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:49:36,075 INFO L480 AbstractCegarLoop]: Abstraction has 32714 states and 42365 transitions. [2018-11-12 18:49:36,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:49:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 32714 states and 42365 transitions. [2018-11-12 18:49:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-12 18:49:36,082 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:49:36,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:49:36,082 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:49:36,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1084674450, now seen corresponding path program 1 times [2018-11-12 18:49:36,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:49:36,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:36,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:49:36,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:49:36,087 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:49:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:49:36,423 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:49:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 18:49:36,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:49:36,676 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:49:36,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-12 18:49:36,689 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2263], [2265], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:49:36,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:49:36,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:49:37,617 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:49:38,837 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:49:38,840 INFO L272 AbstractInterpreter]: Visited 157 different actions 308 times. Merged at 5 different actions 5 times. Never widened. Performed 4944 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4944 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:49:38,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:49:38,885 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:49:39,921 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 78.26% of their original sizes. [2018-11-12 18:49:39,922 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:49:40,878 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-12 18:49:40,878 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:49:40,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:49:40,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-11-12 18:49:40,880 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:49:40,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:49:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:49:40,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-12 18:49:40,882 INFO L87 Difference]: Start difference. First operand 32714 states and 42365 transitions. Second operand 16 states. [2018-11-12 18:50:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:50:56,685 INFO L93 Difference]: Finished difference Result 68565 states and 88850 transitions. [2018-11-12 18:50:56,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 18:50:56,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 212 [2018-11-12 18:50:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:50:56,865 INFO L225 Difference]: With dead ends: 68565 [2018-11-12 18:50:56,865 INFO L226 Difference]: Without dead ends: 35857 [2018-11-12 18:50:56,930 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2018-11-12 18:50:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35857 states. [2018-11-12 18:50:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35857 to 35848. [2018-11-12 18:50:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35848 states. [2018-11-12 18:50:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35848 states to 35848 states and 45667 transitions. [2018-11-12 18:50:57,818 INFO L78 Accepts]: Start accepts. Automaton has 35848 states and 45667 transitions. Word has length 212 [2018-11-12 18:50:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:50:57,819 INFO L480 AbstractCegarLoop]: Abstraction has 35848 states and 45667 transitions. [2018-11-12 18:50:57,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 18:50:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 35848 states and 45667 transitions. [2018-11-12 18:50:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-12 18:50:57,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:50:57,832 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:50:57,832 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:50:57,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:50:57,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1503195216, now seen corresponding path program 1 times [2018-11-12 18:50:57,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:50:57,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:57,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:50:57,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:50:57,834 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:50:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:50:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:50:58,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:50:58,487 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:50:58,488 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-11-12 18:50:58,488 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2263], [2265], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2752], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:50:58,499 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:50:58,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:51:10,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:51:10,185 INFO L272 AbstractInterpreter]: Visited 176 different actions 348 times. Merged at 5 different actions 7 times. Never widened. Performed 5942 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5942 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:51:10,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:10,193 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:51:10,680 INFO L227 lantSequenceWeakener]: Weakened 303 states. On average, predicates are now at 75.58% of their original sizes. [2018-11-12 18:51:10,681 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:51:10,833 INFO L415 sIntCurrentIteration]: We unified 305 AI predicates to 305 [2018-11-12 18:51:10,833 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:51:10,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:51:10,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:51:10,834 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:10,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:51:10,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:51:10,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:51:10,835 INFO L87 Difference]: Start difference. First operand 35848 states and 45667 transitions. Second operand 11 states. [2018-11-12 18:51:13,469 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:51:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:51:56,719 INFO L93 Difference]: Finished difference Result 70096 states and 89752 transitions. [2018-11-12 18:51:56,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 18:51:56,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 306 [2018-11-12 18:51:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:51:56,813 INFO L225 Difference]: With dead ends: 70096 [2018-11-12 18:51:56,813 INFO L226 Difference]: Without dead ends: 35848 [2018-11-12 18:51:56,857 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 314 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:51:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35848 states. [2018-11-12 18:51:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35848 to 35848. [2018-11-12 18:51:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35848 states. [2018-11-12 18:51:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35848 states to 35848 states and 45663 transitions. [2018-11-12 18:51:57,441 INFO L78 Accepts]: Start accepts. Automaton has 35848 states and 45663 transitions. Word has length 306 [2018-11-12 18:51:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:51:57,441 INFO L480 AbstractCegarLoop]: Abstraction has 35848 states and 45663 transitions. [2018-11-12 18:51:57,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:51:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 35848 states and 45663 transitions. [2018-11-12 18:51:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-12 18:51:57,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:57,453 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:51:57,454 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:57,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:57,454 INFO L82 PathProgramCache]: Analyzing trace with hash -111704288, now seen corresponding path program 1 times [2018-11-12 18:51:57,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:57,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:57,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:57,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:57,457 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-12 18:51:57,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:51:57,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:51:57,835 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:57,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:51:57,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:51:57,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:51:57,837 INFO L87 Difference]: Start difference. First operand 35848 states and 45663 transitions. Second operand 3 states. Received shutdown request... [2018-11-12 18:51:59,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:51:59,314 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:51:59,320 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:51:59,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:51:59 BoogieIcfgContainer [2018-11-12 18:51:59,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:51:59,322 INFO L168 Benchmark]: Toolchain (without parser) took 209008.21 ms. Allocated memory was 1.5 GB in the beginning and 5.9 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -657.7 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,323 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:51:59,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2134.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,325 INFO L168 Benchmark]: Boogie Preprocessor took 225.25 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: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,326 INFO L168 Benchmark]: RCFGBuilder took 9274.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 651.1 MB). Peak memory consumption was 651.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,327 INFO L168 Benchmark]: TraceAbstraction took 197052.91 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -489.6 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:51:59,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2134.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.25 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: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9274.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 651.1 MB). Peak memory consumption was 651.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197052.91 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -489.6 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 177). Cancelled while BasicCegarLoop was constructing difference of abstraction (35848states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1123 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 196.9s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 173.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4074 SDtfs, 22828 SDslu, 1516 SDs, 0 SdLazy, 41240 SolverSat, 6561 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 578 GetRequests, 510 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35848occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978472778485414 AbsIntWeakeningRatio, 0.09302325581395349 AbsIntAvgWeakeningVarsNumRemoved, 19.57751937984496 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 297 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1627 NumberOfCodeBlocks, 1627 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1619 ConstructedInterpolants, 0 QuantifiedInterpolants, 1069253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 636/689 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown