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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:08:01,125 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:08:01,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:08:01,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:08:01,142 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:08:01,143 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:08:01,144 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:08:01,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:08:01,148 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:08:01,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:08:01,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:08:01,150 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:08:01,151 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:08:01,152 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:08:01,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:08:01,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:08:01,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:08:01,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:08:01,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:08:01,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:08:01,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:08:01,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:08:01,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:08:01,168 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:08:01,168 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:08:01,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:08:01,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:08:01,173 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:08:01,174 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:08:01,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:08:01,175 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:08:01,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:08:01,178 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:08:01,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:08:01,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:08:01,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:08:01,180 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:08:01,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:08:01,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:08:01,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:08:01,207 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:08:01,208 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:08:01,208 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:08:01,208 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:08:01,208 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:08:01,208 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:08:01,209 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:08:01,209 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:08:01,209 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:08:01,209 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:08:01,209 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:08:01,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:08:01,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:08:01,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:08:01,211 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:08:01,211 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:08:01,211 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:08:01,211 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:08:01,211 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:08:01,212 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:08:01,212 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:08:01,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:08:01,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:08:01,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:08:01,213 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:08:01,213 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:08:01,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:08:01,213 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:08:01,213 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:08:01,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:08:01,214 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:08:01,214 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:08:01,214 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:08:01,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:08:01,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:08:01,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:08:01,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:08:01,292 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:08:01,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-27 05:08:01,356 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9503d16d1/fcdacb0f16244972b64cc302f06ae79e/FLAGc2b504024 [2018-10-27 05:08:01,920 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:08:01,921 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-27 05:08:01,941 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9503d16d1/fcdacb0f16244972b64cc302f06ae79e/FLAGc2b504024 [2018-10-27 05:08:01,963 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9503d16d1/fcdacb0f16244972b64cc302f06ae79e [2018-10-27 05:08:01,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:08:01,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:08:01,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:08:01,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:08:01,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:08:01,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:01" (1/1) ... [2018-10-27 05:08:01,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b8a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:01, skipping insertion in model container [2018-10-27 05:08:01,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:08:01" (1/1) ... [2018-10-27 05:08:02,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:08:02,092 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:08:02,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:08:02,663 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:08:02,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:08:02,871 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:08:02,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02 WrapperNode [2018-10-27 05:08:02,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:08:02,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:08:02,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:08:02,874 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:08:02,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:02,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:08:03,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:08:03,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:08:03,127 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:08:03,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (1/1) ... [2018-10-27 05:08:03,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:08:03,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:08:03,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:08:03,258 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:08:03,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (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 05:08:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:08:03,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:08:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:08:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:08:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:08:03,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:08:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:08:03,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:08:07,514 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:08:07,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:07 BoogieIcfgContainer [2018-10-27 05:08:07,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:08:07,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:08:07,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:08:07,525 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:08:07,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:08:01" (1/3) ... [2018-10-27 05:08:07,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfb0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:07, skipping insertion in model container [2018-10-27 05:08:07,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:08:02" (2/3) ... [2018-10-27 05:08:07,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfb0a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:08:07, skipping insertion in model container [2018-10-27 05:08:07,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:08:07" (3/3) ... [2018-10-27 05:08:07,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-10-27 05:08:07,543 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:08:07,557 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:08:07,575 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:08:07,616 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:08:07,617 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:08:07,617 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:08:07,617 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:08:07,617 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:08:07,618 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:08:07,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:08:07,618 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:08:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 05:08:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 05:08:07,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:08:07,661 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] [2018-10-27 05:08:07,663 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:08:07,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash 90592777, now seen corresponding path program 1 times [2018-10-27 05:08:07,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:08:07,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:07,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:07,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:07,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:08:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:08,110 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-27 05:08:08,120 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 05:08:08,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:08:08,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:08:08,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:08:08,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:08:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:08:08,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:08:08,150 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 05:08:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:08:11,731 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-27 05:08:11,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:08:11,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-27 05:08:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:08:11,768 INFO L225 Difference]: With dead ends: 985 [2018-10-27 05:08:11,768 INFO L226 Difference]: Without dead ends: 686 [2018-10-27 05:08:11,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:08:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-27 05:08:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-27 05:08:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-27 05:08:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-27 05:08:11,931 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 21 [2018-10-27 05:08:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:08:11,932 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-27 05:08:11,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:08:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-27 05:08:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 05:08:11,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:08:11,943 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:08:11,944 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:08:11,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2082581707, now seen corresponding path program 1 times [2018-10-27 05:08:11,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:08:11,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:11,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:11,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:11,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:08:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:08:12,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:08:12,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:08:12,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:08:12,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:08:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:08:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:08:12,384 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-27 05:08:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:08:17,843 INFO L93 Difference]: Finished difference Result 2338 states and 3734 transitions. [2018-10-27 05:08:17,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:08:17,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 05:08:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:08:17,855 INFO L225 Difference]: With dead ends: 2338 [2018-10-27 05:08:17,856 INFO L226 Difference]: Without dead ends: 1658 [2018-10-27 05:08:17,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:08:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-10-27 05:08:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1641. [2018-10-27 05:08:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-10-27 05:08:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2354 transitions. [2018-10-27 05:08:17,921 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2354 transitions. Word has length 102 [2018-10-27 05:08:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:08:17,922 INFO L481 AbstractCegarLoop]: Abstraction has 1641 states and 2354 transitions. [2018-10-27 05:08:17,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:08:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2354 transitions. [2018-10-27 05:08:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 05:08:17,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:08:17,931 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:08:17,931 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:08:17,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash 712970381, now seen corresponding path program 1 times [2018-10-27 05:08:17,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:08:17,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:17,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:17,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:17,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:08:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:08:18,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:08:18,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:08:18,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:08:18,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:08:18,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:08:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:08:18,142 INFO L87 Difference]: Start difference. First operand 1641 states and 2354 transitions. Second operand 4 states. [2018-10-27 05:08:21,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:08:21,030 INFO L93 Difference]: Finished difference Result 6228 states and 9297 transitions. [2018-10-27 05:08:21,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:08:21,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-27 05:08:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:08:21,069 INFO L225 Difference]: With dead ends: 6228 [2018-10-27 05:08:21,069 INFO L226 Difference]: Without dead ends: 4593 [2018-10-27 05:08:21,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:08:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2018-10-27 05:08:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4563. [2018-10-27 05:08:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-27 05:08:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6349 transitions. [2018-10-27 05:08:21,249 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6349 transitions. Word has length 153 [2018-10-27 05:08:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:08:21,250 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 6349 transitions. [2018-10-27 05:08:21,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:08:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6349 transitions. [2018-10-27 05:08:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 05:08:21,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:08:21,265 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:08:21,265 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:08:21,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:21,266 INFO L82 PathProgramCache]: Analyzing trace with hash -657545899, now seen corresponding path program 1 times [2018-10-27 05:08:21,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:08:21,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:21,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:21,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:21,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:08:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:08:21,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:08:21,552 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:08:21,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-10-27 05:08:21,555 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:08:21,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:08:21,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:08:22,605 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:08:22,607 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 05:08:22,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:22,652 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:08:23,563 INFO L227 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 73.02% of their original sizes. [2018-10-27 05:08:23,563 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:08:23,791 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-10-27 05:08:23,792 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:08:23,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:08:23,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 05:08:23,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:08:23,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:08:23,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:08:23,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:08:23,795 INFO L87 Difference]: Start difference. First operand 4563 states and 6349 transitions. Second operand 6 states. [2018-10-27 05:08:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:08:56,438 INFO L93 Difference]: Finished difference Result 8934 states and 12486 transitions. [2018-10-27 05:08:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:08:56,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-27 05:08:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:08:56,465 INFO L225 Difference]: With dead ends: 8934 [2018-10-27 05:08:56,465 INFO L226 Difference]: Without dead ends: 4566 [2018-10-27 05:08:56,483 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:08:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-27 05:08:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2018-10-27 05:08:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-27 05:08:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6335 transitions. [2018-10-27 05:08:56,600 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6335 transitions. Word has length 189 [2018-10-27 05:08:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:08:56,600 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 6335 transitions. [2018-10-27 05:08:56,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:08:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6335 transitions. [2018-10-27 05:08:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-27 05:08:56,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:08:56,605 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 05:08:56,605 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:08:56,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1702589905, now seen corresponding path program 1 times [2018-10-27 05:08:56,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:08:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:56,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:08:56,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:08:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 05:08:56,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:08:56,947 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:08:56,948 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-27 05:08:56,948 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 05:08:56,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:08:56,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:08:57,436 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:08:57,437 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 05:08:57,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:08:57,477 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:08:57,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:08:57,477 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 05:08:57,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:08:57,492 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:08:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:08:57,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:09:11,187 WARN L179 SmtUtils]: Spent 13.04 s on a formula simplification. DAG size of input: 335 DAG size of output: 37 [2018-10-27 05:09:23,795 WARN L179 SmtUtils]: Spent 12.24 s on a formula simplification. DAG size of input: 131 DAG size of output: 61 [2018-10-27 05:09:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 29 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:09:24,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:09:24,542 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2018-10-27 05:09:45,258 WARN L179 SmtUtils]: Spent 20.31 s on a formula simplification. DAG size of input: 476 DAG size of output: 38 [2018-10-27 05:09:45,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 05:09:45,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2018-10-27 05:09:45,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2018-10-27 05:09:45,362 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 12816 conjuctions. This might take some time... [2018-10-27 05:09:47,528 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 1152 conjuctions. [2018-10-27 05:09:47,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 22