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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:11:32,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:11:32,439 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:11:32,455 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:11:32,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:11:32,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:11:32,458 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:11:32,459 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:11:32,461 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:11:32,462 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:11:32,463 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:11:32,463 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:11:32,464 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:11:32,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:11:32,466 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:11:32,467 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:11:32,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:11:32,470 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:11:32,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:11:32,473 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:11:32,474 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:11:32,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:11:32,478 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 23:11:32,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 23:11:32,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 23:11:32,479 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 23:11:32,480 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 23:11:32,481 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 23:11:32,482 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 23:11:32,483 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 23:11:32,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 23:11:32,484 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 23:11:32,484 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:11:32,484 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:11:32,485 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:11:32,486 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:11:32,486 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-06 23:11:32,514 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:11:32,514 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:11:32,515 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:11:32,515 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:11:32,515 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:11:32,517 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:11:32,517 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:11:32,517 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:11:32,517 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:11:32,517 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:11:32,517 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:11:32,518 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:11:32,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:11:32,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:11:32,519 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:11:32,519 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:11:32,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:11:32,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:11:32,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:11:32,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:11:32,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:11:32,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:11:32,522 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:11:32,523 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:11:32,523 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:11:32,523 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:11:32,523 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:11:32,523 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:11:32,524 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:11:32,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:11:32,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:11:32,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:11:32,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:11:32,594 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:11:32,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-11-06 23:11:32,657 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5fb0761/8aa8e12f62984665aa5368626c879411/FLAGc7db4e3fd [2018-11-06 23:11:33,280 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:11:33,281 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-11-06 23:11:33,303 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5fb0761/8aa8e12f62984665aa5368626c879411/FLAGc7db4e3fd [2018-11-06 23:11:33,318 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5fb0761/8aa8e12f62984665aa5368626c879411 [2018-11-06 23:11:33,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:11:33,330 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:11:33,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:11:33,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:11:33,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:11:33,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:33" (1/1) ... [2018-11-06 23:11:33,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:33, skipping insertion in model container [2018-11-06 23:11:33,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:33" (1/1) ... [2018-11-06 23:11:33,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:11:33,434 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:11:34,137 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:11:34,142 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:11:34,476 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:11:34,502 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:11:34,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34 WrapperNode [2018-11-06 23:11:34,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:11:34,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:11:34,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:11:34,505 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:11:34,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:11:34,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:11:34,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:11:34,715 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:11:34,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (1/1) ... [2018-11-06 23:11:34,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:11:34,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:11:34,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:11:34,874 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:11:34,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (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 [2018-11-06 23:11:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:11:34,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:11:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:11:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:11:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:11:34,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:11:34,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:11:34,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:11:34,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:11:40,242 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:11:40,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:40 BoogieIcfgContainer [2018-11-06 23:11:40,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:11:40,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:11:40,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:11:40,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:11:40,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:11:33" (1/3) ... [2018-11-06 23:11:40,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:40, skipping insertion in model container [2018-11-06 23:11:40,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:34" (2/3) ... [2018-11-06 23:11:40,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:40, skipping insertion in model container [2018-11-06 23:11:40,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:40" (3/3) ... [2018-11-06 23:11:40,252 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label45_false-unreach-call.c [2018-11-06 23:11:40,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:11:40,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:11:40,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:11:40,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:11:40,326 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:11:40,326 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:11:40,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:11:40,326 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:11:40,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:11:40,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:11:40,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:11:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-06 23:11:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-06 23:11:40,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:40,372 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] [2018-11-06 23:11:40,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:40,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash -554051460, now seen corresponding path program 1 times [2018-11-06 23:11:40,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:40,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:40,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:40,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:40,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:11:41,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:11:41,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 23:11:41,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:11:41,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 23:11:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 23:11:41,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:11:41,561 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-06 23:11:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:11:44,917 INFO L93 Difference]: Finished difference Result 1082 states and 1941 transitions. [2018-11-06 23:11:44,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 23:11:44,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-11-06 23:11:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:11:44,943 INFO L225 Difference]: With dead ends: 1082 [2018-11-06 23:11:44,943 INFO L226 Difference]: Without dead ends: 764 [2018-11-06 23:11:44,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:11:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-11-06 23:11:45,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 522. [2018-11-06 23:11:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-06 23:11:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 918 transitions. [2018-11-06 23:11:45,055 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 918 transitions. Word has length 151 [2018-11-06 23:11:45,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:11:45,056 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 918 transitions. [2018-11-06 23:11:45,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 23:11:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 918 transitions. [2018-11-06 23:11:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-06 23:11:45,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:45,064 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] [2018-11-06 23:11:45,065 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:45,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:45,065 INFO L82 PathProgramCache]: Analyzing trace with hash 406455853, now seen corresponding path program 1 times [2018-11-06 23:11:45,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:45,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:45,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:45,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:45,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:45,537 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:11:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:11:45,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:11:45,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 23:11:45,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:11:45,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 23:11:45,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 23:11:45,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 23:11:45,628 INFO L87 Difference]: Start difference. First operand 522 states and 918 transitions. Second operand 5 states. [2018-11-06 23:11:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:11:49,037 INFO L93 Difference]: Finished difference Result 1609 states and 2931 transitions. [2018-11-06 23:11:49,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:11:49,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-11-06 23:11:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:11:49,054 INFO L225 Difference]: With dead ends: 1609 [2018-11-06 23:11:49,054 INFO L226 Difference]: Without dead ends: 1093 [2018-11-06 23:11:49,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 23:11:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2018-11-06 23:11:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1070. [2018-11-06 23:11:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2018-11-06 23:11:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1765 transitions. [2018-11-06 23:11:49,143 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1765 transitions. Word has length 162 [2018-11-06 23:11:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:11:49,144 INFO L480 AbstractCegarLoop]: Abstraction has 1070 states and 1765 transitions. [2018-11-06 23:11:49,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 23:11:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1765 transitions. [2018-11-06 23:11:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-06 23:11:49,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:49,151 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-06 23:11:49,151 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:49,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2048888082, now seen corresponding path program 1 times [2018-11-06 23:11:49,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:49,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:49,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-06 23:11:49,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:11:49,362 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:11:49,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-11-06 23:11:49,365 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [17], [21], [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], [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], [669], [671], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-06 23:11:49,462 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:11:49,462 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:15:54,895 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-06 23:15:54,897 INFO L272 AbstractInterpreter]: Visited 152 different actions 152 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-06 23:15:54,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:15:54,916 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown