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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:52:29,352 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:52:29,356 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:52:29,376 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:52:29,377 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:52:29,378 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:52:29,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:52:29,383 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:52:29,385 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:52:29,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:52:29,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:52:29,390 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:52:29,391 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:52:29,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:52:29,399 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:52:29,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:52:29,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:52:29,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:52:29,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:52:29,417 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:52:29,421 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:52:29,424 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:52:29,429 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:52:29,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:52:29,429 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:52:29,432 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:52:29,433 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:52:29,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:52:29,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:52:29,441 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:52:29,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:52:29,444 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 10:52:29,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 10:52:29,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 10:52:29,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 10:52:29,447 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 10:52:29,447 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.epf [2018-11-07 10:52:29,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:52:29,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:52:29,473 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:52:29,474 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:52:29,474 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:52:29,474 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:52:29,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:52:29,475 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:52:29,475 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:52:29,475 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:52:29,476 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:52:29,476 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:52:29,477 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:52:29,477 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:52:29,477 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:52:29,477 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:52:29,477 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:52:29,479 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:52:29,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:52:29,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:52:29,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:52:29,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:52:29,480 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:52:29,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:52:29,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:52:29,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:52:29,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:52:29,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:52:29,482 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:52:29,483 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:52:29,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:52:29,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:52:29,483 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:52:29,483 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:52:29,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:52:29,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:52:29,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:52:29,574 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:52:29,574 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:52:29,575 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-11-07 10:52:29,639 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357226f88/26d2d5b14ab14e948f088cb522626b7a/FLAGda89dac80 [2018-11-07 10:52:30,298 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:52:30,301 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-11-07 10:52:30,322 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357226f88/26d2d5b14ab14e948f088cb522626b7a/FLAGda89dac80 [2018-11-07 10:52:30,341 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357226f88/26d2d5b14ab14e948f088cb522626b7a [2018-11-07 10:52:30,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:52:30,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:52:30,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:52:30,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:52:30,363 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:52:30,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:52:30" (1/1) ... [2018-11-07 10:52:30,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34389c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:30, skipping insertion in model container [2018-11-07 10:52:30,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:52:30" (1/1) ... [2018-11-07 10:52:30,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:52:30,482 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:52:31,193 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:52:31,198 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:52:31,449 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:52:31,473 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:52:31,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31 WrapperNode [2018-11-07 10:52:31,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:52:31,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:52:31,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:52:31,476 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:52:31,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:52:31,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:52:31,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:52:31,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:52:31,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (1/1) ... [2018-11-07 10:52:31,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:52:31,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:52:31,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:52:31,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:52:31,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (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 10:52:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 10:52:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:52:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:52:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 10:52:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 10:52:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:52:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:52:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:52:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:52:37,600 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:52:37,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:52:37 BoogieIcfgContainer [2018-11-07 10:52:37,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:52:37,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:52:37,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:52:37,606 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:52:37,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:52:30" (1/3) ... [2018-11-07 10:52:37,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:52:37, skipping insertion in model container [2018-11-07 10:52:37,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:31" (2/3) ... [2018-11-07 10:52:37,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7928d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:52:37, skipping insertion in model container [2018-11-07 10:52:37,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:52:37" (3/3) ... [2018-11-07 10:52:37,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label31_false-unreach-call.c [2018-11-07 10:52:37,621 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:52:37,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:52:37,650 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:52:37,693 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:52:37,693 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:52:37,693 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:52:37,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:52:37,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:52:37,694 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:52:37,694 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:52:37,694 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:52:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 10:52:37,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 10:52:37,756 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:37,759 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:37,761 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:37,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash -489199711, now seen corresponding path program 1 times [2018-11-07 10:52:37,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:37,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:37,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:37,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:37,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:39,076 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 10:52:39,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:39,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 10:52:39,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:39,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 10:52:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 10:52:39,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 10:52:39,105 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 10:52:42,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:42,549 INFO L93 Difference]: Finished difference Result 1085 states and 1949 transitions. [2018-11-07 10:52:42,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 10:52:42,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-11-07 10:52:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:42,579 INFO L225 Difference]: With dead ends: 1085 [2018-11-07 10:52:42,579 INFO L226 Difference]: Without dead ends: 767 [2018-11-07 10:52:42,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 10:52:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-11-07 10:52:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 523. [2018-11-07 10:52:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-11-07 10:52:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 922 transitions. [2018-11-07 10:52:42,679 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 922 transitions. Word has length 158 [2018-11-07 10:52:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:42,681 INFO L480 AbstractCegarLoop]: Abstraction has 523 states and 922 transitions. [2018-11-07 10:52:42,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 10:52:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 922 transitions. [2018-11-07 10:52:42,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 10:52:42,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:42,688 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 10:52:42,688 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:42,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash 690659536, now seen corresponding path program 1 times [2018-11-07 10:52:42,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:42,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:42,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:42,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:42,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:42,970 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 10:52:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:43,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:43,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 10:52:43,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:43,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:52:43,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:52:43,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 10:52:43,192 INFO L87 Difference]: Start difference. First operand 523 states and 922 transitions. Second operand 5 states. [2018-11-07 10:52:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:47,025 INFO L93 Difference]: Finished difference Result 1613 states and 2944 transitions. [2018-11-07 10:52:47,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 10:52:47,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-11-07 10:52:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:47,040 INFO L225 Difference]: With dead ends: 1613 [2018-11-07 10:52:47,040 INFO L226 Difference]: Without dead ends: 1096 [2018-11-07 10:52:47,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 10:52:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-11-07 10:52:47,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-11-07 10:52:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-11-07 10:52:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1774 transitions. [2018-11-07 10:52:47,142 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1774 transitions. Word has length 169 [2018-11-07 10:52:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:47,142 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 1774 transitions. [2018-11-07 10:52:47,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:52:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1774 transitions. [2018-11-07 10:52:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 10:52:47,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:47,156 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 10:52:47,157 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:47,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash -427347419, now seen corresponding path program 1 times [2018-11-07 10:52:47,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:47,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:47,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:47,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:47,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:47,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:52:47,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:52:47,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 10:52:47,662 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [725], [727], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:52:47,730 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:52:47,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:53:07,726 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 10:53:07,728 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 10:53:07,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:07,774 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 10:53:19,796 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 70.45% of their original sizes. [2018-11-07 10:53:19,796 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 10:53:20,793 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 10:53:20,793 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 10:53:20,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:53:20,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2018-11-07 10:53:20,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:53:20,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 10:53:20,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 10:53:20,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-11-07 10:53:20,797 INFO L87 Difference]: Start difference. First operand 1073 states and 1774 transitions. Second operand 15 states. [2018-11-07 10:54:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:54:16,127 INFO L93 Difference]: Finished difference Result 2350 states and 3872 transitions. [2018-11-07 10:54:16,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 10:54:16,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 171 [2018-11-07 10:54:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:54:16,134 INFO L225 Difference]: With dead ends: 2350 [2018-11-07 10:54:16,134 INFO L226 Difference]: Without dead ends: 1283 [2018-11-07 10:54:16,138 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2018-11-07 10:54:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-07 10:54:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1281. [2018-11-07 10:54:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2018-11-07 10:54:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1990 transitions. [2018-11-07 10:54:16,173 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1990 transitions. Word has length 171 [2018-11-07 10:54:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:54:16,173 INFO L480 AbstractCegarLoop]: Abstraction has 1281 states and 1990 transitions. [2018-11-07 10:54:16,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 10:54:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1990 transitions. [2018-11-07 10:54:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 10:54:16,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:54:16,178 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 10:54:16,179 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:54:16,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:54:16,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1617695120, now seen corresponding path program 1 times [2018-11-07 10:54:16,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:54:16,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:54:16,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:54:16,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:54:16,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:54:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:54:16,535 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 10:54:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:54:16,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:54:16,604 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:54:16,605 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-11-07 10:54:16,605 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [725], [727], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:54:16,615 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:54:16,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:55:44,839 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:55:44,840 INFO L272 AbstractInterpreter]: Visited 162 different actions 316 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 10:55:44,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:55:44,847 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:55:44,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:55:44,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:55:44,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:55:44,858 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:55:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:55:45,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:55:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:55:45,233 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:55:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:55:45,726 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:55:45,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 10:55:45,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:55:45,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:55:45,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:55:45,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 10:55:45,728 INFO L87 Difference]: Start difference. First operand 1281 states and 1990 transitions. Second operand 3 states. [2018-11-07 10:55:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:55:48,139 INFO L93 Difference]: Finished difference Result 3286 states and 5449 transitions. [2018-11-07 10:55:48,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:55:48,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2018-11-07 10:55:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:55:48,164 INFO L225 Difference]: With dead ends: 3286 [2018-11-07 10:55:48,165 INFO L226 Difference]: Without dead ends: 2219 [2018-11-07 10:55:48,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 10:55:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2018-11-07 10:55:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2216. [2018-11-07 10:55:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2018-11-07 10:55:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3218 transitions. [2018-11-07 10:55:48,241 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3218 transitions. Word has length 180 [2018-11-07 10:55:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:55:48,243 INFO L480 AbstractCegarLoop]: Abstraction has 2216 states and 3218 transitions. [2018-11-07 10:55:48,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:55:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3218 transitions. [2018-11-07 10:55:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 10:55:48,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:55:48,255 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:48,256 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:55:48,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:55:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1457343189, now seen corresponding path program 1 times [2018-11-07 10:55:48,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:55:48,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:55:48,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:55:48,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:55:48,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:55:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:55:48,614 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 10:55:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 69 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:55:49,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:55:49,529 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:55:49,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 10:55:49,530 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [252], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [725], [727], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:55:49,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:55:49,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown