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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:42:17,339 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:42:17,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:42:17,355 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:42:17,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:42:17,357 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:42:17,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:42:17,360 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:42:17,362 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:42:17,362 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:42:17,363 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:42:17,363 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:42:17,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:42:17,365 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:42:17,367 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:42:17,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:42:17,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:42:17,376 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:42:17,381 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:42:17,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:42:17,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:42:17,388 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:42:17,390 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:42:17,391 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:42:17,391 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:42:17,396 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:42:17,397 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:42:17,398 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:42:17,398 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:42:17,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:42:17,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:42:17,403 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:42:17,403 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:42:17,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:42:17,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:42:17,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:42:17,408 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:42:17,429 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:42:17,429 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:42:17,430 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:42:17,430 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:42:17,430 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:42:17,430 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:42:17,431 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:42:17,431 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:42:17,431 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:42:17,431 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:42:17,431 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:42:17,433 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:42:17,434 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:42:17,434 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:42:17,435 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:42:17,435 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:42:17,435 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:42:17,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:42:17,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:42:17,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:42:17,436 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:42:17,436 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:42:17,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:42:17,436 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:42:17,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:42:17,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:42:17,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:42:17,438 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:42:17,438 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:42:17,439 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:42:17,440 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:42:17,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:42:17,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:42:17,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:42:17,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:42:17,520 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:42:17,521 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-11-07 08:42:17,583 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b500806e6/307c1f2dd28c4e3d9c9d36b70a22dccf/FLAG937f5bc20 [2018-11-07 08:42:18,344 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:42:18,345 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-11-07 08:42:18,373 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b500806e6/307c1f2dd28c4e3d9c9d36b70a22dccf/FLAG937f5bc20 [2018-11-07 08:42:18,389 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b500806e6/307c1f2dd28c4e3d9c9d36b70a22dccf [2018-11-07 08:42:18,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:42:18,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:42:18,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:42:18,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:42:18,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:42:18,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:18" (1/1) ... [2018-11-07 08:42:18,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:18, skipping insertion in model container [2018-11-07 08:42:18,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:18" (1/1) ... [2018-11-07 08:42:18,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:42:18,580 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:42:19,963 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:42:19,968 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:42:20,606 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:42:20,639 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:42:20,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20 WrapperNode [2018-11-07 08:42:20,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:42:20,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:42:20,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:42:20,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:42:20,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:42:20,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:42:20,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:42:20,951 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:42:20,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:20,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:21,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:21,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:21,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (1/1) ... [2018-11-07 08:42:21,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:42:21,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:42:21,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:42:21,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:42:21,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (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 08:42:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:42:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:42:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:42:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:42:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:42:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:42:21,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:42:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:42:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:42:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:42:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:42:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:42:21,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:42:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:42:21,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:42:30,869 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:42:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:30 BoogieIcfgContainer [2018-11-07 08:42:30,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:42:30,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:42:30,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:42:30,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:42:30,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:18" (1/3) ... [2018-11-07 08:42:30,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:30, skipping insertion in model container [2018-11-07 08:42:30,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:20" (2/3) ... [2018-11-07 08:42:30,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:30, skipping insertion in model container [2018-11-07 08:42:30,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:30" (3/3) ... [2018-11-07 08:42:30,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-11-07 08:42:30,888 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:42:30,898 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:42:30,914 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:42:30,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:42:30,960 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:42:30,960 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:42:30,960 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:42:30,960 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:42:30,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:42:30,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:42:30,961 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:42:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 08:42:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 08:42:31,025 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:42:31,026 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] [2018-11-07 08:42:31,030 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:42:31,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash -366069493, now seen corresponding path program 1 times [2018-11-07 08:42:31,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:42:31,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:31,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:31,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:31,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:42:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:31,579 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:42:31,709 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 08:42:31,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:42:31,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:42:31,712 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:42:31,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:42:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:42:31,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:42:31,738 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 08:42:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:42:39,325 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 08:42:39,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:42:39,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-07 08:42:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:42:39,374 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 08:42:39,374 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 08:42:39,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:42:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 08:42:39,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 08:42:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 08:42:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 08:42:39,575 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 59 [2018-11-07 08:42:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:42:39,576 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 08:42:39,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:42:39,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 08:42:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 08:42:39,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:42:39,593 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:39,593 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:42:39,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1469474424, now seen corresponding path program 1 times [2018-11-07 08:42:39,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:42:39,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:39,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:42:39,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:42:39,596 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:42:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:42:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:42:40,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:42:40,002 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:42:40,003 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-11-07 08:42:40,005 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2239], [2241], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 08:42:40,074 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:42:40,074 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:42:40,753 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:42:40,755 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 08:42:40,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:42:40,791 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:42:41,251 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 76.22% of their original sizes. [2018-11-07 08:42:41,252 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:42:41,805 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-11-07 08:42:41,806 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:42:41,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:42:41,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 08:42:41,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:42:41,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:42:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:42:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:42:41,809 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown