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_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:07:13,375 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:07:13,377 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:07:13,397 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:07:13,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:07:13,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:07:13,400 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:07:13,402 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:07:13,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:07:13,405 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:07:13,408 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:07:13,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:07:13,409 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:07:13,412 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:07:13,413 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:07:13,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:07:13,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:07:13,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:07:13,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:07:13,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:07:13,434 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:07:13,435 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:07:13,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 23:07:13,438 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 23:07:13,438 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 23:07:13,439 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 23:07:13,440 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 23:07:13,441 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 23:07:13,441 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 23:07:13,442 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 23:07:13,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 23:07:13,443 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 23:07:13,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:07:13,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:07:13,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:07:13,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:07:13,448 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 23:07:13,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:07:13,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:07:13,479 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:07:13,479 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:07:13,480 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:07:13,480 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:07:13,480 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:07:13,480 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:07:13,480 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:07:13,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:07:13,481 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:07:13,481 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:07:13,482 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:07:13,482 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:07:13,482 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:07:13,483 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:07:13,483 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:07:13,483 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:07:13,483 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:07:13,483 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:07:13,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:07:13,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:07:13,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:07:13,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:07:13,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:07:13,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:07:13,487 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:07:13,488 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:07:13,488 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:07:13,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:07:13,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:07:13,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:07:13,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:07:13,585 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:07:13,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-11-06 23:07:13,658 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8a7609/19d556312e1e49f9817152ad2043ae75/FLAG4c348df43 [2018-11-06 23:07:14,404 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:07:14,405 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label13_false-unreach-call.c [2018-11-06 23:07:14,423 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8a7609/19d556312e1e49f9817152ad2043ae75/FLAG4c348df43 [2018-11-06 23:07:14,438 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fb8a7609/19d556312e1e49f9817152ad2043ae75 [2018-11-06 23:07:14,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:07:14,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:07:14,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:07:14,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:07:14,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:07:14,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:14" (1/1) ... [2018-11-06 23:07:14,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7785b2bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:14, skipping insertion in model container [2018-11-06 23:07:14,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:07:14" (1/1) ... [2018-11-06 23:07:14,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:07:14,575 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:07:15,308 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:07:15,314 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:07:15,562 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:07:15,590 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:07:15,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15 WrapperNode [2018-11-06 23:07:15,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:07:15,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:07:15,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:07:15,592 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:07:15,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:07:15,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:07:15,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:07:15,819 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:07:15,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (1/1) ... [2018-11-06 23:07:15,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:07:15,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:07:15,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:07:15,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:07:15,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (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 23:07:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:07:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:07:16,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:07:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:07:16,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:07:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:07:16,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:07:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:07:16,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:07:21,080 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:07:21,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:21 BoogieIcfgContainer [2018-11-06 23:07:21,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:07:21,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:07:21,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:07:21,086 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:07:21,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:07:14" (1/3) ... [2018-11-06 23:07:21,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450b1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:21, skipping insertion in model container [2018-11-06 23:07:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:07:15" (2/3) ... [2018-11-06 23:07:21,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450b1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:21, skipping insertion in model container [2018-11-06 23:07:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:21" (3/3) ... [2018-11-06 23:07:21,090 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label13_false-unreach-call.c [2018-11-06 23:07:21,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:07:21,111 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:07:21,127 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:07:21,171 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:07:21,172 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:07:21,172 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:07:21,172 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:07:21,172 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:07:21,172 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:07:21,173 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:07:21,173 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:07:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-06 23:07:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-06 23:07:21,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:21,241 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, 1, 1, 1, 1] [2018-11-06 23:07:21,245 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:21,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257777, now seen corresponding path program 1 times [2018-11-06 23:07:21,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:21,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:21,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:21,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:21,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:22,243 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:07:22,502 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 23:07:22,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:22,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:07:22,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:22,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:07:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:07:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:07:22,531 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-06 23:07:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:25,003 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-06 23:07:25,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:07:25,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2018-11-06 23:07:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:25,028 INFO L225 Difference]: With dead ends: 838 [2018-11-06 23:07:25,029 INFO L226 Difference]: Without dead ends: 524 [2018-11-06 23:07:25,037 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 [2018-11-06 23:07:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-06 23:07:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-06 23:07:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-06 23:07:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-06 23:07:25,125 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 162 [2018-11-06 23:07:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:25,127 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-06 23:07:25,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:07:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-06 23:07:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-06 23:07:25,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:25,135 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:07:25,135 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:25,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash -179109864, now seen corresponding path program 1 times [2018-11-06 23:07:25,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:25,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:25,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:25,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:25,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:25,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:25,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:07:25,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:25,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:07:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:07:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:07:25,440 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-06 23:07:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:29,017 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-06 23:07:29,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 23:07:29,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-06 23:07:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:29,034 INFO L225 Difference]: With dead ends: 1581 [2018-11-06 23:07:29,034 INFO L226 Difference]: Without dead ends: 1065 [2018-11-06 23:07:29,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 23:07:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-06 23:07:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-06 23:07:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-06 23:07:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-06 23:07:29,134 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 172 [2018-11-06 23:07:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:29,135 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-06 23:07:29,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:07:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-06 23:07:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-06 23:07:29,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:29,140 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, 1, 1, 1, 1] [2018-11-06 23:07:29,140 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:29,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash 375781109, now seen corresponding path program 1 times [2018-11-06 23:07:29,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:29,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:29,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:29,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:29,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:29,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:29,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:07:29,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:29,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:07:29,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:07:29,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:07:29,441 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-06 23:07:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:32,184 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-06 23:07:32,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:07:32,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-11-06 23:07:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:32,210 INFO L225 Difference]: With dead ends: 2887 [2018-11-06 23:07:32,210 INFO L226 Difference]: Without dead ends: 1870 [2018-11-06 23:07:32,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:07:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-06 23:07:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-06 23:07:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-06 23:07:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-06 23:07:32,292 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 175 [2018-11-06 23:07:32,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:32,293 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-06 23:07:32,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:07:32,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-06 23:07:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-06 23:07:32,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:32,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:32,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:32,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:32,302 INFO L82 PathProgramCache]: Analyzing trace with hash -879878394, now seen corresponding path program 1 times [2018-11-06 23:07:32,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:32,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:32,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:32,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:32,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:32,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:32,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:07:32,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:32,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:07:32,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:07:32,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:07:32,650 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-06 23:07:34,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:34,246 INFO L93 Difference]: Finished difference Result 5412 states and 9175 transitions. [2018-11-06 23:07:34,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:07:34,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-11-06 23:07:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:34,275 INFO L225 Difference]: With dead ends: 5412 [2018-11-06 23:07:34,275 INFO L226 Difference]: Without dead ends: 3553 [2018-11-06 23:07:34,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:07:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-11-06 23:07:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3551. [2018-11-06 23:07:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2018-11-06 23:07:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5637 transitions. [2018-11-06 23:07:34,410 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5637 transitions. Word has length 195 [2018-11-06 23:07:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:34,411 INFO L480 AbstractCegarLoop]: Abstraction has 3551 states and 5637 transitions. [2018-11-06 23:07:34,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:07:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5637 transitions. [2018-11-06 23:07:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-06 23:07:34,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:34,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:34,426 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:34,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1511937120, now seen corresponding path program 1 times [2018-11-06 23:07:34,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:34,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:34,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:34,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:34,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:34,712 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:07:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:35,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:35,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:07:35,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:35,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:07:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:07:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:07:35,086 INFO L87 Difference]: Start difference. First operand 3551 states and 5637 transitions. Second operand 6 states. [2018-11-06 23:07:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:37,245 INFO L93 Difference]: Finished difference Result 8962 states and 15042 transitions. [2018-11-06 23:07:37,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:07:37,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2018-11-06 23:07:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:37,287 INFO L225 Difference]: With dead ends: 8962 [2018-11-06 23:07:37,288 INFO L226 Difference]: Without dead ends: 5417 [2018-11-06 23:07:37,306 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 23:07:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2018-11-06 23:07:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5329. [2018-11-06 23:07:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5329 states. [2018-11-06 23:07:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 7602 transitions. [2018-11-06 23:07:37,504 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 7602 transitions. Word has length 200 [2018-11-06 23:07:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:37,504 INFO L480 AbstractCegarLoop]: Abstraction has 5329 states and 7602 transitions. [2018-11-06 23:07:37,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:07:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 7602 transitions. [2018-11-06 23:07:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-06 23:07:37,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:37,527 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 23:07:37,527 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:37,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:37,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1095155627, now seen corresponding path program 1 times [2018-11-06 23:07:37,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:37,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:37,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:37,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:37,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:37,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:07:37,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:07:37,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:07:37,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:07:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:07:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:07:37,836 INFO L87 Difference]: Start difference. First operand 5329 states and 7602 transitions. Second operand 6 states. [2018-11-06 23:07:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:07:39,905 INFO L93 Difference]: Finished difference Result 11197 states and 16329 transitions. [2018-11-06 23:07:39,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:07:39,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-11-06 23:07:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:07:39,945 INFO L225 Difference]: With dead ends: 11197 [2018-11-06 23:07:39,945 INFO L226 Difference]: Without dead ends: 5874 [2018-11-06 23:07:39,971 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 23:07:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2018-11-06 23:07:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5601. [2018-11-06 23:07:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2018-11-06 23:07:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7541 transitions. [2018-11-06 23:07:40,206 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7541 transitions. Word has length 221 [2018-11-06 23:07:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:07:40,207 INFO L480 AbstractCegarLoop]: Abstraction has 5601 states and 7541 transitions. [2018-11-06 23:07:40,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:07:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7541 transitions. [2018-11-06 23:07:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-06 23:07:40,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:07:40,235 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:07:40,235 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:07:40,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:07:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 986428583, now seen corresponding path program 1 times [2018-11-06 23:07:40,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:07:40,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:40,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:07:40,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:07:40,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:07:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:07:40,858 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-06 23:07:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:07:41,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:07:41,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:07:41,038 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-06 23:07:41,041 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], [240], [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], [729], [737], [745], [753], [757], [759], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-06 23:07:41,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:07:41,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-06 23:11:46,529 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-06 23:11:46,530 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-06 23:11:46,531 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-06 23:11:46,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:11:46,532 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 [2018-11-06 23:11:46,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:46,547 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-06 23:11:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:46,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:11:46,828 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 23:11:47,030 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:11:47,031 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 23:11:47,036 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 23:11:47,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:11:47 BoogieIcfgContainer [2018-11-06 23:11:47,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 23:11:47,038 INFO L168 Benchmark]: Toolchain (without parser) took 272587.64 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -140.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-06 23:11:47,040 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:11:47,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1138.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-06 23:11:47,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.13 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-11-06 23:11:47,042 INFO L168 Benchmark]: Boogie Preprocessor took 156.90 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:11:47,043 INFO L168 Benchmark]: RCFGBuilder took 5105.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.6 MB). Peak memory consumption was 253.6 MB. Max. memory is 7.1 GB. [2018-11-06 23:11:47,044 INFO L168 Benchmark]: TraceAbstraction took 265955.08 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 377.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-06 23:11:47,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1138.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.13 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.90 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5105.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 253.6 MB). Peak memory consumption was 253.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 265955.08 ms. Allocated memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 377.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1500]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1500). Cancelled while BasicCegarLoop was analyzing trace of length 235 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 265.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 14.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1656 SDtfs, 3735 SDslu, 824 SDs, 0 SdLazy, 5949 SolverSat, 1191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5601occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 245.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 412 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1125 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1119 ConstructedInterpolants, 0 QuantifiedInterpolants, 543686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 138/138 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown