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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:44:10,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:44:10,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:44:10,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:44:10,119 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:44:10,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:44:10,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:44:10,124 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:44:10,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:44:10,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:44:10,127 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:44:10,127 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:44:10,128 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:44:10,129 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:44:10,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:44:10,131 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:44:10,132 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:44:10,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:44:10,136 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:44:10,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:44:10,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:44:10,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:44:10,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:44:10,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:44:10,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:44:10,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:44:10,145 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:44:10,146 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:44:10,147 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:44:10,148 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:44:10,148 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:44:10,149 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:44:10,149 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:44:10,149 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:44:10,150 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:44:10,151 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:44:10,151 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 13:44:10,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:44:10,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:44:10,168 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:44:10,168 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:44:10,168 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:44:10,168 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:44:10,169 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:44:10,170 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:44:10,170 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:44:10,171 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:44:10,172 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:44:10,172 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:44:10,172 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:44:10,172 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:44:10,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:44:10,173 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:44:10,173 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:44:10,173 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:44:10,173 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:44:10,173 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:44:10,174 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:44:10,174 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:44:10,174 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:44:10,174 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:44:10,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:44:10,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:44:10,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:44:10,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:44:10,236 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:44:10,237 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-10-27 13:44:10,295 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d378b8a1d/24b613e2b9d546afa9713069eeddcc3f/FLAG056929587 [2018-10-27 13:44:10,850 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:44:10,852 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-10-27 13:44:10,874 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d378b8a1d/24b613e2b9d546afa9713069eeddcc3f/FLAG056929587 [2018-10-27 13:44:10,897 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d378b8a1d/24b613e2b9d546afa9713069eeddcc3f [2018-10-27 13:44:10,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:44:10,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:44:10,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:44:10,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:44:10,920 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:44:10,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:10" (1/1) ... [2018-10-27 13:44:10,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a13cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:10, skipping insertion in model container [2018-10-27 13:44:10,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:10" (1/1) ... [2018-10-27 13:44:10,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:44:11,009 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:44:11,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:44:11,500 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:44:11,681 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:44:11,707 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:44:11,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11 WrapperNode [2018-10-27 13:44:11,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:44:11,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:44:11,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:44:11,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:44:11,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:11,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:11,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:44:11,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:44:11,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:44:11,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:44:11,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:11,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:11,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:11,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:12,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:12,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:12,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (1/1) ... [2018-10-27 13:44:12,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:44:12,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:44:12,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:44:12,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:44:12,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (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 13:44:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:44:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:44:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:44:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:44:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:44:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:44:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:44:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:44:15,178 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:44:15,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:15 BoogieIcfgContainer [2018-10-27 13:44:15,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:44:15,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:44:15,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:44:15,187 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:44:15,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:44:10" (1/3) ... [2018-10-27 13:44:15,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349df598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:15, skipping insertion in model container [2018-10-27 13:44:15,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:11" (2/3) ... [2018-10-27 13:44:15,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349df598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:15, skipping insertion in model container [2018-10-27 13:44:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:15" (3/3) ... [2018-10-27 13:44:15,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label38_true-unreach-call.c [2018-10-27 13:44:15,203 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:44:15,215 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:44:15,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:44:15,284 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:44:15,284 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:44:15,284 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:44:15,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:44:15,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:44:15,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:44:15,285 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:44:15,285 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:44:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 13:44:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 13:44:15,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:15,319 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] [2018-10-27 13:44:15,321 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:15,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:15,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1705771087, now seen corresponding path program 1 times [2018-10-27 13:44:15,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:15,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:15,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:15,755 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 13:44:15,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:44:15,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 13:44:15,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:15,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 13:44:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 13:44:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:44:15,785 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 13:44:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:44:17,480 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 13:44:17,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 13:44:17,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-10-27 13:44:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:44:17,500 INFO L225 Difference]: With dead ends: 574 [2018-10-27 13:44:17,501 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 13:44:17,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:44:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 13:44:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 13:44:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 13:44:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 607 transitions. [2018-10-27 13:44:17,579 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 607 transitions. Word has length 39 [2018-10-27 13:44:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:44:17,580 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 607 transitions. [2018-10-27 13:44:17,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 13:44:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 607 transitions. [2018-10-27 13:44:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 13:44:17,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:44:17,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:17,589 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:44:17,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1698105396, now seen corresponding path program 1 times [2018-10-27 13:44:17,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:44:17,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:17,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:44:17,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:44:17,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:44:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:44:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 13:44:18,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:44:18,038 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:44:18,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-27 13:44:18,042 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], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 13:44:18,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:44:18,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:44:18,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:44:18,770 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 13:44:18,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:44:18,812 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:44:19,386 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 73.81% of their original sizes. [2018-10-27 13:44:19,387 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:44:20,375 INFO L415 sIntCurrentIteration]: We unified 126 AI predicates to 126 [2018-10-27 13:44:20,375 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:44:20,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:44:20,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 13:44:20,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:44:20,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 13:44:20,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 13:44:20,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:44:20,379 INFO L87 Difference]: Start difference. First operand 356 states and 607 transitions. Second operand 10 states. [2018-10-27 13:44:24,171 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown