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/Problem11_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 13:56:20,121 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 13:56:20,123 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 13:56:20,136 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 13:56:20,136 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 13:56:20,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 13:56:20,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 13:56:20,143 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 13:56:20,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 13:56:20,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 13:56:20,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 13:56:20,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 13:56:20,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 13:56:20,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 13:56:20,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 13:56:20,157 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 13:56:20,158 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 13:56:20,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 13:56:20,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 13:56:20,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 13:56:20,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 13:56:20,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 13:56:20,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 13:56:20,182 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 13:56:20,182 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 13:56:20,185 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 13:56:20,186 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 13:56:20,187 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 13:56:20,188 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 13:56:20,189 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 13:56:20,189 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 13:56:20,190 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 13:56:20,191 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 13:56:20,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 13:56:20,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 13:56:20,193 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 13:56:20,194 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 13:56:20,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 13:56:20,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 13:56:20,217 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 13:56:20,218 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 13:56:20,220 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 13:56:20,220 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 13:56:20,220 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 13:56:20,221 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 13:56:20,221 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 13:56:20,221 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 13:56:20,221 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 13:56:20,221 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 13:56:20,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 13:56:20,222 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 13:56:20,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 13:56:20,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 13:56:20,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 13:56:20,223 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 13:56:20,223 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 13:56:20,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 13:56:20,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 13:56:20,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 13:56:20,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 13:56:20,224 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 13:56:20,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 13:56:20,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 13:56:20,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 13:56:20,227 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 13:56:20,227 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 13:56:20,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 13:56:20,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 13:56:20,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 13:56:20,228 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 13:56:20,229 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 13:56:20,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 13:56:20,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 13:56:20,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 13:56:20,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 13:56:20,296 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 13:56:20,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label38_true-unreach-call.c [2018-10-27 13:56:20,361 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4f14f53e/5e8d38345a514792b8660c861412e9b1/FLAGbbcb0022c [2018-10-27 13:56:20,923 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 13:56:20,924 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label38_true-unreach-call.c [2018-10-27 13:56:20,954 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4f14f53e/5e8d38345a514792b8660c861412e9b1/FLAGbbcb0022c [2018-10-27 13:56:20,982 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4f14f53e/5e8d38345a514792b8660c861412e9b1 [2018-10-27 13:56:20,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 13:56:20,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 13:56:20,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 13:56:20,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 13:56:21,005 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 13:56:21,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:56:20" (1/1) ... [2018-10-27 13:56:21,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36832d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21, skipping insertion in model container [2018-10-27 13:56:21,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:56:20" (1/1) ... [2018-10-27 13:56:21,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 13:56:21,105 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 13:56:21,739 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:56:21,745 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 13:56:21,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 13:56:21,979 INFO L193 MainTranslator]: Completed translation [2018-10-27 13:56:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21 WrapperNode [2018-10-27 13:56:21,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 13:56:21,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 13:56:21,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 13:56:21,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 13:56:21,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 13:56:22,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 13:56:22,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 13:56:22,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 13:56:22,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (1/1) ... [2018-10-27 13:56:22,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 13:56:22,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 13:56:22,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 13:56:22,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 13:56:22,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (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 13:56:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 13:56:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 13:56:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 13:56:22,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 13:56:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 13:56:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 13:56:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 13:56:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 13:56:26,975 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 13:56:26,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:56:26 BoogieIcfgContainer [2018-10-27 13:56:26,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 13:56:26,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 13:56:26,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 13:56:26,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 13:56:26,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:56:20" (1/3) ... [2018-10-27 13:56:26,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a9a84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:56:26, skipping insertion in model container [2018-10-27 13:56:26,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:56:21" (2/3) ... [2018-10-27 13:56:26,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a9a84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:56:26, skipping insertion in model container [2018-10-27 13:56:26,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:56:26" (3/3) ... [2018-10-27 13:56:26,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label38_true-unreach-call.c [2018-10-27 13:56:26,997 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 13:56:27,007 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 13:56:27,024 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 13:56:27,065 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 13:56:27,066 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 13:56:27,066 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 13:56:27,066 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 13:56:27,067 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 13:56:27,067 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 13:56:27,067 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 13:56:27,067 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 13:56:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 13:56:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-27 13:56:27,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:56:27,109 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] [2018-10-27 13:56:27,112 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:56:27,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:56:27,119 INFO L82 PathProgramCache]: Analyzing trace with hash 296004705, now seen corresponding path program 1 times [2018-10-27 13:56:27,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:56:27,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:27,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:56:27,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:27,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:56:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:56:27,696 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 13:56:27,827 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 13:56:27,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:56:27,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 13:56:27,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:56:27,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 13:56:27,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 13:56:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 13:56:27,861 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-27 13:56:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:56:30,007 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-27 13:56:30,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 13:56:30,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-10-27 13:56:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:56:30,031 INFO L225 Difference]: With dead ends: 782 [2018-10-27 13:56:30,031 INFO L226 Difference]: Without dead ends: 487 [2018-10-27 13:56:30,041 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 13:56:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-27 13:56:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-27 13:56:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-27 13:56:30,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-10-27 13:56:30,133 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 67 [2018-10-27 13:56:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:56:30,134 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-10-27 13:56:30,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 13:56:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-10-27 13:56:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 13:56:30,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:56:30,146 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:56:30,147 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:56:30,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:56:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1433084721, now seen corresponding path program 1 times [2018-10-27 13:56:30,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:56:30,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:30,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:56:30,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:30,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:56:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:56:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:56:30,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:56:30,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:56:30,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:56:30,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:56:30,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:56:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:56:30,510 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-10-27 13:56:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:56:35,986 INFO L93 Difference]: Finished difference Result 1804 states and 3389 transitions. [2018-10-27 13:56:35,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 13:56:35,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 13:56:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:56:36,002 INFO L225 Difference]: With dead ends: 1804 [2018-10-27 13:56:36,002 INFO L226 Difference]: Without dead ends: 1328 [2018-10-27 13:56:36,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 13:56:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2018-10-27 13:56:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1286. [2018-10-27 13:56:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2018-10-27 13:56:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1955 transitions. [2018-10-27 13:56:36,117 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1955 transitions. Word has length 138 [2018-10-27 13:56:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:56:36,118 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1955 transitions. [2018-10-27 13:56:36,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:56:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1955 transitions. [2018-10-27 13:56:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 13:56:36,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:56:36,131 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, 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] [2018-10-27 13:56:36,131 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:56:36,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:56:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1675544195, now seen corresponding path program 1 times [2018-10-27 13:56:36,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:56:36,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:36,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:56:36,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:36,133 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:56:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:56:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:56:36,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 13:56:36,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 13:56:36,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:56:36,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 13:56:36,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 13:56:36,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 13:56:36,745 INFO L87 Difference]: Start difference. First operand 1286 states and 1955 transitions. Second operand 6 states. [2018-10-27 13:56:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 13:56:41,106 INFO L93 Difference]: Finished difference Result 4497 states and 7274 transitions. [2018-10-27 13:56:41,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 13:56:41,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 13:56:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 13:56:41,133 INFO L225 Difference]: With dead ends: 4497 [2018-10-27 13:56:41,134 INFO L226 Difference]: Without dead ends: 3217 [2018-10-27 13:56:41,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 13:56:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2018-10-27 13:56:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3178. [2018-10-27 13:56:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2018-10-27 13:56:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4547 transitions. [2018-10-27 13:56:41,267 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4547 transitions. Word has length 148 [2018-10-27 13:56:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 13:56:41,268 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 4547 transitions. [2018-10-27 13:56:41,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 13:56:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4547 transitions. [2018-10-27 13:56:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-27 13:56:41,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 13:56:41,277 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 13:56:41,277 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 13:56:41,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:56:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1977764724, now seen corresponding path program 1 times [2018-10-27 13:56:41,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 13:56:41,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:41,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 13:56:41,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 13:56:41,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 13:56:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 13:56:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 13:56:41,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 13:56:41,548 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 13:56:41,549 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-27 13:56:41,551 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], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 13:56:41,605 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 13:56:41,605 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 13:56:42,095 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 13:56:42,660 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 13:56:42,662 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 13:56:42,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 13:56:42,706 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 13:56:43,791 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 73.86% of their original sizes. [2018-10-27 13:56:43,792 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 13:56:44,143 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-10-27 13:56:44,144 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 13:56:44,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 13:56:44,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 13:56:44,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 13:56:44,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 13:56:44,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 13:56:44,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 13:56:44,147 INFO L87 Difference]: Start difference. First operand 3178 states and 4547 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown