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/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:26:44,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:26:44,240 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:26:44,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:26:44,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:26:44,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:26:44,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:26:44,259 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:26:44,260 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:26:44,261 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:26:44,262 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:26:44,263 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:26:44,263 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:26:44,264 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:26:44,266 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:26:44,266 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:26:44,267 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:26:44,269 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:26:44,271 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:26:44,273 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:26:44,274 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:26:44,275 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:26:44,278 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:26:44,278 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:26:44,278 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:26:44,279 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:26:44,282 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:26:44,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:26:44,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:26:44,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:26:44,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:26:44,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:26:44,287 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:26:44,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:26:44,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:26:44,291 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:26:44,291 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 [2018-11-07 20:26:44,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:26:44,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:26:44,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:26:44,316 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:26:44,316 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:26:44,316 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:26:44,317 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:26:44,321 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:26:44,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:26:44,322 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:26:44,323 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:26:44,324 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:26:44,324 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:26:44,324 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:26:44,324 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:26:44,325 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:26:44,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:26:44,327 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:26:44,327 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:26:44,327 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:26:44,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:26:44,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:26:44,328 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:26:44,328 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:26:44,328 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:26:44,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:26:44,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:26:44,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:26:44,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:26:44,413 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:26:44,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-11-07 20:26:44,479 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a074cfd69/4d6f38ca995a437ca5c567128104e624/FLAGccdd6f5bb [2018-11-07 20:26:45,304 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:26:45,306 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-11-07 20:26:45,348 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a074cfd69/4d6f38ca995a437ca5c567128104e624/FLAGccdd6f5bb [2018-11-07 20:26:45,368 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a074cfd69/4d6f38ca995a437ca5c567128104e624 [2018-11-07 20:26:45,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:26:45,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:26:45,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:26:45,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:26:45,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:26:45,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:45" (1/1) ... [2018-11-07 20:26:45,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4682e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:45, skipping insertion in model container [2018-11-07 20:26:45,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:45" (1/1) ... [2018-11-07 20:26:45,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:26:45,596 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:26:47,183 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:26:47,188 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:26:47,927 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:26:47,966 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:26:47,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47 WrapperNode [2018-11-07 20:26:47,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:26:47,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:26:47,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:26:47,968 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:26:47,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:26:48,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:26:48,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:26:48,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:26:48,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... [2018-11-07 20:26:48,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:26:48,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:26:48,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:26:48,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:26:48,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:26:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:26:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:26:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:26:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:26:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:26:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:26:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:26:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:26:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:26:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:26:48,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:26:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:26:48,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:26:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:26:48,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:27:00,262 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:27:00,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:00 BoogieIcfgContainer [2018-11-07 20:27:00,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:27:00,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:27:00,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:27:00,267 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:27:00,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:26:45" (1/3) ... [2018-11-07 20:27:00,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284edf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:00, skipping insertion in model container [2018-11-07 20:27:00,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47" (2/3) ... [2018-11-07 20:27:00,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284edf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:00, skipping insertion in model container [2018-11-07 20:27:00,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:00" (3/3) ... [2018-11-07 20:27:00,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-11-07 20:27:00,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:27:00,290 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:27:00,308 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:27:00,355 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:27:00,355 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:27:00,355 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:27:00,356 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:27:00,356 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:27:00,356 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:27:00,356 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:27:00,356 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:27:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 20:27:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 20:27:00,407 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:00,408 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] [2018-11-07 20:27:00,410 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:00,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash 963614956, now seen corresponding path program 1 times [2018-11-07 20:27:00,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:00,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:00,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:00,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:00,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:00,937 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:27:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:27:01,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:01,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:27:01,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:01,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:27:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:27:01,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:27:01,068 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 20:27:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:27:09,190 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 20:27:09,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:27:09,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-07 20:27:09,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:27:09,224 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 20:27:09,224 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 20:27:09,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:27:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 20:27:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 20:27:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 20:27:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 20:27:09,449 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 48 [2018-11-07 20:27:09,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:27:09,450 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 20:27:09,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:27:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 20:27:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 20:27:09,461 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:09,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:27:09,462 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:09,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:09,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1268878372, now seen corresponding path program 1 times [2018-11-07 20:27:09,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:09,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:09,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:27:09,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:09,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:27:09,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:09,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:27:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:27:09,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:27:09,886 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 20:27:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:27:23,443 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 20:27:23,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:27:23,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 20:27:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:27:23,468 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 20:27:23,468 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 20:27:23,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:27:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 20:27:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 20:27:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 20:27:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 20:27:23,597 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 124 [2018-11-07 20:27:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:27:23,598 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 20:27:23,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:27:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 20:27:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 20:27:23,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:23,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:27:23,608 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:23,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash -594329152, now seen corresponding path program 1 times [2018-11-07 20:27:23,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:23,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:23,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:23,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:23,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:27:23,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:23,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:27:23,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:23,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:27:23,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:27:23,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:27:23,871 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 20:27:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:27:40,773 INFO L93 Difference]: Finished difference Result 13650 states and 21731 transitions. [2018-11-07 20:27:40,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:27:40,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-11-07 20:27:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:27:40,838 INFO L225 Difference]: With dead ends: 13650 [2018-11-07 20:27:40,838 INFO L226 Difference]: Without dead ends: 9974 [2018-11-07 20:27:40,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:27:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2018-11-07 20:27:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 9787. [2018-11-07 20:27:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9787 states. [2018-11-07 20:27:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9787 states to 9787 states and 14485 transitions. [2018-11-07 20:27:41,141 INFO L78 Accepts]: Start accepts. Automaton has 9787 states and 14485 transitions. Word has length 138 [2018-11-07 20:27:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:27:41,142 INFO L480 AbstractCegarLoop]: Abstraction has 9787 states and 14485 transitions. [2018-11-07 20:27:41,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:27:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9787 states and 14485 transitions. [2018-11-07 20:27:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 20:27:41,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:41,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:27:41,148 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:41,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash -221189476, now seen corresponding path program 1 times [2018-11-07 20:27:41,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:41,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:41,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:41,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:41,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:41,440 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:27:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:27:41,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:41,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:27:41,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:41,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:27:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:27:41,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:27:41,529 INFO L87 Difference]: Start difference. First operand 9787 states and 14485 transitions. Second operand 6 states. [2018-11-07 20:27:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:27:53,806 INFO L93 Difference]: Finished difference Result 34094 states and 53590 transitions. [2018-11-07 20:27:53,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:27:53,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-07 20:27:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:27:53,941 INFO L225 Difference]: With dead ends: 34094 [2018-11-07 20:27:53,941 INFO L226 Difference]: Without dead ends: 24313 [2018-11-07 20:27:54,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:27:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24313 states. [2018-11-07 20:27:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24313 to 24088. [2018-11-07 20:27:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24088 states. [2018-11-07 20:27:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24088 states to 24088 states and 33915 transitions. [2018-11-07 20:27:54,593 INFO L78 Accepts]: Start accepts. Automaton has 24088 states and 33915 transitions. Word has length 156 [2018-11-07 20:27:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:27:54,594 INFO L480 AbstractCegarLoop]: Abstraction has 24088 states and 33915 transitions. [2018-11-07 20:27:54,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:27:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 24088 states and 33915 transitions. [2018-11-07 20:27:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 20:27:54,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:54,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:27:54,603 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:54,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1233336343, now seen corresponding path program 1 times [2018-11-07 20:27:54,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:54,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:54,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:54,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:54,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:54,865 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:27:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:27:55,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:55,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:27:55,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:55,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:27:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:27:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:27:55,270 INFO L87 Difference]: Start difference. First operand 24088 states and 33915 transitions. Second operand 6 states. [2018-11-07 20:28:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:03,968 INFO L93 Difference]: Finished difference Result 61340 states and 95925 transitions. [2018-11-07 20:28:03,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:28:03,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 20:28:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:04,134 INFO L225 Difference]: With dead ends: 61340 [2018-11-07 20:28:04,135 INFO L226 Difference]: Without dead ends: 37258 [2018-11-07 20:28:04,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:28:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37258 states. [2018-11-07 20:28:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37258 to 37058. [2018-11-07 20:28:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37058 states. [2018-11-07 20:28:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37058 states to 37058 states and 52792 transitions. [2018-11-07 20:28:05,085 INFO L78 Accepts]: Start accepts. Automaton has 37058 states and 52792 transitions. Word has length 167 [2018-11-07 20:28:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:05,085 INFO L480 AbstractCegarLoop]: Abstraction has 37058 states and 52792 transitions. [2018-11-07 20:28:05,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:28:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 37058 states and 52792 transitions. [2018-11-07 20:28:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 20:28:05,092 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:05,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:28:05,093 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:05,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:05,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1930020088, now seen corresponding path program 1 times [2018-11-07 20:28:05,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:05,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:05,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:05,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:05,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:05,394 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:28:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:05,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:28:05,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:28:05,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:05,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:28:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:28:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:28:05,826 INFO L87 Difference]: Start difference. First operand 37058 states and 52792 transitions. Second operand 6 states. [2018-11-07 20:28:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:15,465 INFO L93 Difference]: Finished difference Result 81309 states and 119305 transitions. [2018-11-07 20:28:15,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:28:15,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-11-07 20:28:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:15,629 INFO L225 Difference]: With dead ends: 81309 [2018-11-07 20:28:15,629 INFO L226 Difference]: Without dead ends: 44257 [2018-11-07 20:28:15,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:28:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44257 states. [2018-11-07 20:28:16,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44257 to 44156. [2018-11-07 20:28:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44156 states. [2018-11-07 20:28:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44156 states to 44156 states and 60179 transitions. [2018-11-07 20:28:16,561 INFO L78 Accepts]: Start accepts. Automaton has 44156 states and 60179 transitions. Word has length 195 [2018-11-07 20:28:16,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:16,562 INFO L480 AbstractCegarLoop]: Abstraction has 44156 states and 60179 transitions. [2018-11-07 20:28:16,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:28:16,562 INFO L276 IsEmpty]: Start isEmpty. Operand 44156 states and 60179 transitions. [2018-11-07 20:28:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-07 20:28:16,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:16,578 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:28:16,579 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:16,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -559903430, now seen corresponding path program 1 times [2018-11-07 20:28:16,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:16,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:16,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:16,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:16,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:17,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:28:17,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:28:17,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-07 20:28:17,163 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2911], [2913], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:28:17,254 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:28:17,254 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:28:18,197 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:28:18,199 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:28:18,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:18,230 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:28:19,096 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 71.49% of their original sizes. [2018-11-07 20:28:19,096 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:28:20,623 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-11-07 20:28:20,623 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:28:20,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:28:20,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:28:20,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:20,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:28:20,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:28:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:28:20,627 INFO L87 Difference]: Start difference. First operand 44156 states and 60179 transitions. Second operand 11 states. [2018-11-07 20:28:33,395 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:29:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:29:13,449 INFO L93 Difference]: Finished difference Result 89115 states and 121252 transitions. [2018-11-07 20:29:13,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:29:13,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 245 [2018-11-07 20:29:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:29:13,587 INFO L225 Difference]: With dead ends: 89115 [2018-11-07 20:29:13,587 INFO L226 Difference]: Without dead ends: 44965 [2018-11-07 20:29:13,693 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:29:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44965 states. [2018-11-07 20:29:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44965 to 44960. [2018-11-07 20:29:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44960 states. [2018-11-07 20:29:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44960 states to 44960 states and 60994 transitions. [2018-11-07 20:29:14,498 INFO L78 Accepts]: Start accepts. Automaton has 44960 states and 60994 transitions. Word has length 245 [2018-11-07 20:29:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:29:14,498 INFO L480 AbstractCegarLoop]: Abstraction has 44960 states and 60994 transitions. [2018-11-07 20:29:14,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:29:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 44960 states and 60994 transitions. [2018-11-07 20:29:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 20:29:14,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:29:14,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:29:14,507 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:29:14,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:29:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1128318740, now seen corresponding path program 1 times [2018-11-07 20:29:14,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:29:14,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:14,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:29:14,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:14,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:29:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:29:14,856 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:29:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 20:29:15,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:29:15,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:29:15,143 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 20:29:15,144 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2911], [2913], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:29:15,152 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:29:15,152 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:29:15,691 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:29:17,438 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:29:17,438 INFO L272 AbstractInterpreter]: Visited 230 different actions 677 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:29:17,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:29:17,444 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:29:17,905 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 73.07% of their original sizes. [2018-11-07 20:29:17,905 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:29:18,263 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 20:29:18,263 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:29:18,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:29:18,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-11-07 20:29:18,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:29:18,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:29:18,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:29:18,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:29:18,265 INFO L87 Difference]: Start difference. First operand 44960 states and 60994 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 20:30:12,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:30:12,152 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:30:12,158 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:30:12,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:30:12 BoogieIcfgContainer [2018-11-07 20:30:12,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:30:12,159 INFO L168 Benchmark]: Toolchain (without parser) took 206778.19 ms. Allocated memory was 1.6 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,160 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:30:12,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2583.81 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 369.34 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,163 INFO L168 Benchmark]: Boogie Preprocessor took 337.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,164 INFO L168 Benchmark]: RCFGBuilder took 11588.16 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 138.4 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 83.8 MB). Peak memory consumption was 650.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,165 INFO L168 Benchmark]: TraceAbstraction took 191894.32 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -39.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:30:12,170 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2583.81 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 369.34 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 337.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11588.16 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 138.4 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 83.8 MB). Peak memory consumption was 650.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191894.32 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -39.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (44960states) and FLOYD_HOARE automaton (currently 19 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (64638 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 191.8s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 177.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5023 SDtfs, 27639 SDslu, 4311 SDs, 0 SdLazy, 44472 SolverSat, 8854 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 582 GetRequests, 510 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44960occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9982206755912557 AbsIntWeakeningRatio, 0.09922178988326848 AbsIntAvgWeakeningVarsNumRemoved, 10.297665369649806 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 802 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1344 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1336 ConstructedInterpolants, 0 QuantifiedInterpolants, 875422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 365/404 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown