java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem14_label33_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:04:14,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:04:14,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:04:14,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:04:14,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:04:14,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:04:14,378 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:04:14,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:04:14,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:04:14,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:04:14,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:04:14,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:04:14,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:04:14,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:04:14,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:04:14,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:04:14,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:04:14,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:04:14,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:04:14,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:04:14,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:04:14,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:04:14,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:04:14,398 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:04:14,398 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:04:14,399 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:04:14,400 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:04:14,401 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:04:14,402 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:04:14,403 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:04:14,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:04:14,407 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:04:14,407 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:04:14,407 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:04:14,408 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:04:14,409 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:04:14,409 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:04:14,425 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:04:14,426 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:04:14,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:04:14,427 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:04:14,427 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:04:14,427 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:04:14,427 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:04:14,427 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:04:14,428 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:04:14,428 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:04:14,428 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:04:14,428 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:04:14,429 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:04:14,429 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:04:14,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:04:14,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:04:14,430 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:04:14,430 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:04:14,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:04:14,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:04:14,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:04:14,431 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:04:14,431 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:04:14,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:04:14,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:04:14,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:04:14,432 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:04:14,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:04:14,432 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:04:14,432 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:04:14,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:04:14,433 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:04:14,433 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:04:14,433 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:04:14,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:04:14,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:04:14,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:04:14,507 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:04:14,508 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:04:14,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 03:04:14,572 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f77b52c6/62bfc5c3d8004140928067b89bfb9ab2/FLAG127b1ffe2 [2018-10-27 03:04:15,129 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:04:15,132 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 03:04:15,154 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f77b52c6/62bfc5c3d8004140928067b89bfb9ab2/FLAG127b1ffe2 [2018-10-27 03:04:15,169 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f77b52c6/62bfc5c3d8004140928067b89bfb9ab2 [2018-10-27 03:04:15,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:04:15,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:04:15,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:04:15,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:04:15,187 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:04:15,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:04:15" (1/1) ... [2018-10-27 03:04:15,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131b7c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:15, skipping insertion in model container [2018-10-27 03:04:15,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:04:15" (1/1) ... [2018-10-27 03:04:15,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:04:15,273 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:04:15,800 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:04:15,806 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:04:15,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:04:16,013 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:04:16,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16 WrapperNode [2018-10-27 03:04:16,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:04:16,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:04:16,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:04:16,015 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:04:16,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:04:16,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:04:16,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:04:16,231 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:04:16,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... [2018-10-27 03:04:16,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:04:16,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:04:16,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:04:16,331 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:04:16,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 03:04:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:04:16,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:04:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:04:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:04:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:04:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:04:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:04:16,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:04:20,590 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:04:20,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:04:20 BoogieIcfgContainer [2018-10-27 03:04:20,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:04:20,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:04:20,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:04:20,596 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:04:20,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:04:15" (1/3) ... [2018-10-27 03:04:20,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cc021a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:04:20, skipping insertion in model container [2018-10-27 03:04:20,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:16" (2/3) ... [2018-10-27 03:04:20,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cc021a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:04:20, skipping insertion in model container [2018-10-27 03:04:20,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:04:20" (3/3) ... [2018-10-27 03:04:20,600 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 03:04:20,610 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:04:20,619 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:04:20,637 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:04:20,688 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:04:20,688 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:04:20,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:04:20,689 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:04:20,689 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:04:20,689 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:04:20,689 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:04:20,689 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:04:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:04:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 03:04:20,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:04:20,735 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] [2018-10-27 03:04:20,738 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:04:20,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1913036537, now seen corresponding path program 1 times [2018-10-27 03:04:20,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:04:20,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:20,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:04:20,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:20,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:04:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:04:21,274 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:04:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:04:21,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:04:21,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:04:21,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:04:21,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:04:21,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:04:21,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:04:21,410 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 03:04:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:04:23,300 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 03:04:23,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:04:23,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-27 03:04:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:04:23,322 INFO L225 Difference]: With dead ends: 691 [2018-10-27 03:04:23,322 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 03:04:23,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:04:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 03:04:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 03:04:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 03:04:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 03:04:23,422 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 65 [2018-10-27 03:04:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:04:23,423 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 03:04:23,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:04:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 03:04:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 03:04:23,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:04:23,432 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, 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] [2018-10-27 03:04:23,432 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:04:23,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:23,433 INFO L82 PathProgramCache]: Analyzing trace with hash 920993175, now seen corresponding path program 1 times [2018-10-27 03:04:23,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:04:23,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:23,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:04:23,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:23,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:04:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:04:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:04:23,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:04:23,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:04:23,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:04:23,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:04:23,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:04:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:04:23,740 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 03:04:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:04:25,856 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 03:04:25,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:04:25,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 03:04:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:04:25,863 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 03:04:25,863 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 03:04:25,865 INFO L605 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 [2018-10-27 03:04:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 03:04:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 03:04:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 03:04:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 03:04:25,904 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 140 [2018-10-27 03:04:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:04:25,905 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 03:04:25,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:04:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 03:04:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-27 03:04:25,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:04:25,913 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, 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] [2018-10-27 03:04:25,913 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:04:25,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash 409670480, now seen corresponding path program 1 times [2018-10-27 03:04:25,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:04:25,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:25,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:04:25,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:25,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:04:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:04:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:04:26,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:04:26,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:04:26,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:04:26,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:04:26,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:04:26,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:04:26,393 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-10-27 03:04:26,587 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 03:04:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:04:31,655 INFO L93 Difference]: Finished difference Result 1819 states and 2988 transitions. [2018-10-27 03:04:31,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:04:31,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-27 03:04:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:04:31,665 INFO L225 Difference]: With dead ends: 1819 [2018-10-27 03:04:31,665 INFO L226 Difference]: Without dead ends: 1200 [2018-10-27 03:04:31,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:04:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2018-10-27 03:04:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1140. [2018-10-27 03:04:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2018-10-27 03:04:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1733 transitions. [2018-10-27 03:04:31,711 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1733 transitions. Word has length 149 [2018-10-27 03:04:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:04:31,712 INFO L481 AbstractCegarLoop]: Abstraction has 1140 states and 1733 transitions. [2018-10-27 03:04:31,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:04:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1733 transitions. [2018-10-27 03:04:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-27 03:04:31,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:04:31,717 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:04:31,718 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:04:31,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965922, now seen corresponding path program 1 times [2018-10-27 03:04:31,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:04:31,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:31,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:04:31,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:04:31,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:04:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:04:32,193 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:04:32,397 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 03:04:32,631 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:04:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:04:32,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:04:32,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:04:32,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-27 03:04:32,993 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:04:33,070 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:04:33,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:04:37,427 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:04:37,428 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:04:37,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:04:37,449 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:04:40,829 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 79.02% of their original sizes. [2018-10-27 03:04:40,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:05:02,365 INFO L415 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2018-10-27 03:05:02,365 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:05:02,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:05:02,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-27 03:05:02,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:05:02,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:05:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:05:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:05:02,367 INFO L87 Difference]: Start difference. First operand 1140 states and 1733 transitions. Second operand 18 states. [2018-10-27 03:06:06,348 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:07:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:07:57,363 INFO L93 Difference]: Finished difference Result 3350 states and 4982 transitions. [2018-10-27 03:07:57,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 03:07:57,363 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 234 [2018-10-27 03:07:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:07:57,377 INFO L225 Difference]: With dead ends: 3350 [2018-10-27 03:07:57,377 INFO L226 Difference]: Without dead ends: 2216 [2018-10-27 03:07:57,382 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 197 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2018-10-27 03:07:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2018-10-27 03:07:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2182. [2018-10-27 03:07:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2018-10-27 03:07:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2810 transitions. [2018-10-27 03:07:57,572 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2810 transitions. Word has length 234 [2018-10-27 03:07:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:07:57,573 INFO L481 AbstractCegarLoop]: Abstraction has 2182 states and 2810 transitions. [2018-10-27 03:07:57,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 03:07:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2810 transitions. [2018-10-27 03:07:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-27 03:07:57,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:07:57,581 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:07:57,582 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:07:57,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:07:57,582 INFO L82 PathProgramCache]: Analyzing trace with hash 656086570, now seen corresponding path program 1 times [2018-10-27 03:07:57,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:07:57,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:57,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:07:57,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:07:57,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:07:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:07:58,052 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:07:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 124 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:07:58,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:07:58,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:07:58,617 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-27 03:07:58,618 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 03:07:58,625 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:07:58,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 03:08:02,324 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 03:08:02,325 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 03:08:02,326 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 03:08:02,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:08:02,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 03:08:02,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:08:02,340 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:08:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:08:02,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:08:02,498 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 03:08:02,699 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 03:08:02,700 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:08:02,704 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:08:02,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:08:02 BoogieIcfgContainer [2018-10-27 03:08:02,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:08:02,705 INFO L168 Benchmark]: Toolchain (without parser) took 227523.64 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 544.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,706 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 03:08:02,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,708 INFO L168 Benchmark]: Boogie Preprocessor took 100.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,709 INFO L168 Benchmark]: RCFGBuilder took 4260.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,715 INFO L168 Benchmark]: TraceAbstraction took 222112.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 447.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:08:02,723 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 830.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -834.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4260.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222112.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 447.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was analyzing trace of length 271 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 184.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 517 SDtfs, 4382 SDslu, 479 SDs, 0 SdLazy, 6839 SolverSat, 1161 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 23.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2182occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9949384213472666 AbsIntWeakeningRatio, 0.11158798283261803 AbsIntAvgWeakeningVarsNumRemoved, 297.6909871244635 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 103 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1167656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 314/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown