java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:01:19,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:01:19,261 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:01:19,273 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:01:19,273 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:01:19,274 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:01:19,276 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:01:19,278 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:01:19,279 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:01:19,280 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:01:19,281 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:01:19,281 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:01:19,282 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:01:19,284 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:01:19,285 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:01:19,286 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:01:19,286 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:01:19,288 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:01:19,290 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:01:19,292 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:01:19,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:01:19,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:01:19,297 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:01:19,297 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:01:19,298 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:01:19,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:01:19,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:01:19,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:01:19,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:01:19,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:01:19,303 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:01:19,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:01:19,304 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:01:19,304 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:01:19,305 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:01:19,306 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:01:19,306 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:01:19,329 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:01:19,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:01:19,330 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:01:19,330 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:01:19,331 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:01:19,331 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:01:19,331 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:01:19,331 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:01:19,332 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:01:19,332 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:01:19,332 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:01:19,332 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:01:19,332 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:01:19,333 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:01:19,334 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:01:19,334 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:01:19,334 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:01:19,334 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:01:19,334 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:01:19,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:01:19,335 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:01:19,335 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:01:19,335 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:01:19,335 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:01:19,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:01:19,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:01:19,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:01:19,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:01:19,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:01:19,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:01:19,338 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:01:19,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:01:19,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:01:19,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:01:19,339 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:01:19,339 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:01:19,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:01:19,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:01:19,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:01:19,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:01:19,432 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:01:19,432 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-11-07 06:01:19,500 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793977b6/413c336839f14a0887423583952001ef/FLAG09074be69 [2018-11-07 06:01:20,071 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:01:20,073 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-11-07 06:01:20,094 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793977b6/413c336839f14a0887423583952001ef/FLAG09074be69 [2018-11-07 06:01:20,110 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793977b6/413c336839f14a0887423583952001ef [2018-11-07 06:01:20,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:01:20,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:01:20,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:01:20,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:01:20,128 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:01:20,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5345ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20, skipping insertion in model container [2018-11-07 06:01:20,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:01:20,205 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:01:20,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:01:20,622 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:01:20,777 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:01:20,796 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:01:20,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20 WrapperNode [2018-11-07 06:01:20,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:01:20,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:01:20,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:01:20,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:01:20,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:01:20,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:01:20,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:01:20,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:01:20,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:20,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:21,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:21,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... [2018-11-07 06:01:21,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:01:21,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:01:21,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:01:21,040 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:01:21,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:01:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:01:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:01:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:01:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:01:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:01:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:01:21,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:01:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:01:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:01:23,980 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:01:23,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:01:23 BoogieIcfgContainer [2018-11-07 06:01:23,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:01:23,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:01:23,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:01:23,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:01:23,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:01:20" (1/3) ... [2018-11-07 06:01:23,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2443a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:01:23, skipping insertion in model container [2018-11-07 06:01:23,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:01:20" (2/3) ... [2018-11-07 06:01:23,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2443a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:01:23, skipping insertion in model container [2018-11-07 06:01:23,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:01:23" (3/3) ... [2018-11-07 06:01:23,989 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label12_false-unreach-call.c [2018-11-07 06:01:23,999 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:01:24,009 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:01:24,026 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:01:24,064 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:01:24,064 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:01:24,064 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:01:24,065 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:01:24,065 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:01:24,065 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:01:24,065 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:01:24,066 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:01:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 06:01:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-07 06:01:24,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:01:24,100 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:01:24,102 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:01:24,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:01:24,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1125399135, now seen corresponding path program 1 times [2018-11-07 06:01:24,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:01:24,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:24,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:01:24,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:24,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:01:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:01:24,447 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:01:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:01:24,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:01:24,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:01:24,472 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:01:24,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:01:24,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:01:24,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:01:24,495 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 06:01:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:01:26,194 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 06:01:26,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:01:26,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-07 06:01:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:01:26,214 INFO L225 Difference]: With dead ends: 574 [2018-11-07 06:01:26,214 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 06:01:26,222 INFO L604 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 [2018-11-07 06:01:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 06:01:26,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 06:01:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 06:01:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-11-07 06:01:26,295 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 19 [2018-11-07 06:01:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:01:26,296 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-11-07 06:01:26,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:01:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-11-07 06:01:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 06:01:26,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:01:26,303 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:01:26,305 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:01:26,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:01:26,306 INFO L82 PathProgramCache]: Analyzing trace with hash 407451016, now seen corresponding path program 1 times [2018-11-07 06:01:26,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:01:26,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:26,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:01:26,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:26,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:01:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:01:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 06:01:26,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:01:26,613 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:01:26,614 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 98 with the following transitions: [2018-11-07 06:01:26,616 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:01:26,660 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:01:26,660 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:01:27,381 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:01:27,384 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:01:27,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:01:27,435 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:01:28,006 INFO L227 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 72.55% of their original sizes. [2018-11-07 06:01:28,006 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:01:28,258 INFO L415 sIntCurrentIteration]: We unified 96 AI predicates to 96 [2018-11-07 06:01:28,259 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:01:28,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:01:28,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-11-07 06:01:28,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:01:28,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:01:28,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:01:28,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:01:28,263 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 6 states. [2018-11-07 06:01:50,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:01:50,556 INFO L93 Difference]: Finished difference Result 852 states and 1486 transitions. [2018-11-07 06:01:50,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:01:50,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-11-07 06:01:50,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:01:50,560 INFO L225 Difference]: With dead ends: 852 [2018-11-07 06:01:50,561 INFO L226 Difference]: Without dead ends: 502 [2018-11-07 06:01:50,563 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:01:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-11-07 06:01:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2018-11-07 06:01:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-11-07 06:01:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 762 transitions. [2018-11-07 06:01:50,597 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 762 transitions. Word has length 97 [2018-11-07 06:01:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:01:50,599 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 762 transitions. [2018-11-07 06:01:50,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:01:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 762 transitions. [2018-11-07 06:01:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-07 06:01:50,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:01:50,610 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:01:50,610 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:01:50,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:01:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 922326170, now seen corresponding path program 1 times [2018-11-07 06:01:50,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:01:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:50,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:01:50,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:01:50,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:01:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:01:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 06:01:50,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:01:50,863 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:01:50,863 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-11-07 06:01:50,864 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [498], [499], [503], [507], [511], [515], [519], [523], [526], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:01:50,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:01:50,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:01:51,194 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:01:51,194 INFO L272 AbstractInterpreter]: Visited 86 different actions 331 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:01:51,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:01:51,233 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:01:51,423 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 06:01:51,424 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:01:51,721 INFO L415 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2018-11-07 06:01:51,722 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:01:51,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:01:51,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-11-07 06:01:51,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:01:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:01:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:01:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:01:51,724 INFO L87 Difference]: Start difference. First operand 500 states and 762 transitions. Second operand 10 states. [2018-11-07 06:02:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:02:23,072 INFO L93 Difference]: Finished difference Result 1390 states and 2388 transitions. [2018-11-07 06:02:23,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 06:02:23,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2018-11-07 06:02:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:02:23,082 INFO L225 Difference]: With dead ends: 1390 [2018-11-07 06:02:23,082 INFO L226 Difference]: Without dead ends: 1040 [2018-11-07 06:02:23,085 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-07 06:02:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-11-07 06:02:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1015. [2018-11-07 06:02:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2018-11-07 06:02:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1452 transitions. [2018-11-07 06:02:23,158 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1452 transitions. Word has length 168 [2018-11-07 06:02:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:02:23,161 INFO L480 AbstractCegarLoop]: Abstraction has 1015 states and 1452 transitions. [2018-11-07 06:02:23,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:02:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1452 transitions. [2018-11-07 06:02:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 06:02:23,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:02:23,174 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:02:23,174 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:02:23,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1514660174, now seen corresponding path program 1 times [2018-11-07 06:02:23,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:02:23,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:23,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:23,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:23,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:02:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:02:23,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:23,882 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:02:23,883 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 06:02:23,883 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:02:23,888 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:02:23,888 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:02:24,200 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:02:24,200 INFO L272 AbstractInterpreter]: Visited 129 different actions 500 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:02:24,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:24,205 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:02:24,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:24,205 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:02:24,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:24,215 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:02:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:24,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:02:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:02:24,767 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:02:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:02:25,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:02:25,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-11-07 06:02:25,218 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:02:25,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 06:02:25,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 06:02:25,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-11-07 06:02:25,220 INFO L87 Difference]: Start difference. First operand 1015 states and 1452 transitions. Second operand 16 states. [2018-11-07 06:02:26,519 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-11-07 06:02:28,024 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-11-07 06:02:30,348 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-11-07 06:02:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:02:35,206 INFO L93 Difference]: Finished difference Result 2976 states and 4701 transitions. [2018-11-07 06:02:35,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-07 06:02:35,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 210 [2018-11-07 06:02:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:02:35,224 INFO L225 Difference]: With dead ends: 2976 [2018-11-07 06:02:35,224 INFO L226 Difference]: Without dead ends: 2111 [2018-11-07 06:02:35,233 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 428 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=634, Invalid=2018, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 06:02:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2018-11-07 06:02:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2036. [2018-11-07 06:02:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2018-11-07 06:02:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2793 transitions. [2018-11-07 06:02:35,344 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2793 transitions. Word has length 210 [2018-11-07 06:02:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:02:35,345 INFO L480 AbstractCegarLoop]: Abstraction has 2036 states and 2793 transitions. [2018-11-07 06:02:35,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 06:02:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2793 transitions. [2018-11-07 06:02:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 06:02:35,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:02:35,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 06:02:35,356 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:02:35,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash 581644974, now seen corresponding path program 1 times [2018-11-07 06:02:35,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:02:35,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:35,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:35,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:35,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:02:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:35,742 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:02:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 42 proven. 154 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 06:02:36,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:36,680 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:02:36,680 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 06:02:36,680 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:02:36,688 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:02:36,688 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:02:37,364 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:02:37,364 INFO L272 AbstractInterpreter]: Visited 130 different actions 391 times. Merged at 8 different actions 24 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:02:37,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:37,402 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:02:37,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:37,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:02:37,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:37,424 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:02:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:37,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:02:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-07 06:02:37,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:02:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 117 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 06:02:38,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:02:38,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 06:02:38,169 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:02:38,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 06:02:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 06:02:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 06:02:38,171 INFO L87 Difference]: Start difference. First operand 2036 states and 2793 transitions. Second operand 11 states. [2018-11-07 06:02:41,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:02:41,544 INFO L93 Difference]: Finished difference Result 4917 states and 7039 transitions. [2018-11-07 06:02:41,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 06:02:41,545 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 297 [2018-11-07 06:02:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:02:41,556 INFO L225 Difference]: With dead ends: 4917 [2018-11-07 06:02:41,556 INFO L226 Difference]: Without dead ends: 1898 [2018-11-07 06:02:41,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 601 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-11-07 06:02:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2018-11-07 06:02:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1488. [2018-11-07 06:02:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-11-07 06:02:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1694 transitions. [2018-11-07 06:02:41,617 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1694 transitions. Word has length 297 [2018-11-07 06:02:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:02:41,617 INFO L480 AbstractCegarLoop]: Abstraction has 1488 states and 1694 transitions. [2018-11-07 06:02:41,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 06:02:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1694 transitions. [2018-11-07 06:02:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-11-07 06:02:41,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:02:41,625 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:02:41,626 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:02:41,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:41,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1230776758, now seen corresponding path program 1 times [2018-11-07 06:02:41,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:02:41,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:41,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:41,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:02:41,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:02:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:42,217 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-11-07 06:02:42,571 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 06:02:42,781 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 06:02:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 42 proven. 258 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 06:02:43,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:43,018 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:02:43,018 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-11-07 06:02:43,019 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:02:43,022 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:02:43,022 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:02:43,368 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:02:43,369 INFO L272 AbstractInterpreter]: Visited 130 different actions 388 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:02:43,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:02:43,377 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:02:43,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:02:43,377 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:02:43,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:02:43,387 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:02:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:02:43,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:02:58,011 WARN L179 SmtUtils]: Spent 14.22 s on a formula simplification. DAG size of input: 179 DAG size of output: 50 [2018-11-07 06:02:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-07 06:02:58,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:02:58,967 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-07 06:02:59,091 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-07 06:02:59,833 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:02:59,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26 [2018-11-07 06:03:00,170 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,482 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,529 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,633 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:00,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,191 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,275 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,549 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:01,810 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,466 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,575 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,636 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,784 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,844 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:02,993 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,042 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,191 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,245 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,495 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,646 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,794 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:03,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,896 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:04,988 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,039 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,366 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,413 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,678 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,791 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,842 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:05,966 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,058 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,240 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,418 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,844 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,893 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:06,983 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,209 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,317 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,374 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,623 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,675 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,720 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,767 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,812 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,949 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:07,994 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,038 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:08,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:09,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 06:03:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 42 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:03:09,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:03:09,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2018-11-07 06:03:09,932 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:03:09,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 06:03:09,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 06:03:09,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-11-07 06:03:09,934 INFO L87 Difference]: Start difference. First operand 1488 states and 1694 transitions. Second operand 16 states. [2018-11-07 06:03:22,091 WARN L179 SmtUtils]: Spent 6.66 s on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2018-11-07 06:03:25,829 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2018-11-07 06:03:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:03:26,431 INFO L93 Difference]: Finished difference Result 4807 states and 6060 transitions. [2018-11-07 06:03:26,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-07 06:03:26,432 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 333 [2018-11-07 06:03:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:03:26,454 INFO L225 Difference]: With dead ends: 4807 [2018-11-07 06:03:26,454 INFO L226 Difference]: Without dead ends: 3325 [2018-11-07 06:03:26,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 568 SyntacticMatches, 112 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=622, Invalid=2348, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 06:03:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2018-11-07 06:03:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3046. [2018-11-07 06:03:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3046 states. [2018-11-07 06:03:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 3784 transitions. [2018-11-07 06:03:26,598 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 3784 transitions. Word has length 333 [2018-11-07 06:03:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:03:26,598 INFO L480 AbstractCegarLoop]: Abstraction has 3046 states and 3784 transitions. [2018-11-07 06:03:26,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 06:03:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 3784 transitions. [2018-11-07 06:03:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-07 06:03:26,611 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:03:26,611 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:03:26,612 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:03:26,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:03:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1230076619, now seen corresponding path program 1 times [2018-11-07 06:03:26,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:03:26,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:03:26,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:03:26,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:03:26,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:03:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:03:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 238 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:03:28,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:03:28,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:03:28,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 353 with the following transitions: [2018-11-07 06:03:28,054 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [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], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 06:03:28,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:03:28,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:03:28,493 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:03:28,493 INFO L272 AbstractInterpreter]: Visited 145 different actions 573 times. Merged at 8 different actions 29 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:03:28,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:03:28,519 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:03:28,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:03:28,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:03:28,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:03:28,659 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:03:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:03:28,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:04:04,404 WARN L179 SmtUtils]: Spent 33.33 s on a formula simplification. DAG size of input: 152 DAG size of output: 48 [2018-11-07 06:04:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 42 proven. 199 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 06:04:07,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:04:07,477 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-11-07 06:04:08,164 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-11-07 06:04:08,282 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-11-07 06:04:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 06:04:08,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:04:08,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 9] total 36 [2018-11-07 06:04:08,843 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:04:08,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 06:04:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 06:04:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1107, Unknown=2, NotChecked=0, Total=1260 [2018-11-07 06:04:08,845 INFO L87 Difference]: Start difference. First operand 3046 states and 3784 transitions. Second operand 30 states. [2018-11-07 06:04:09,176 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 21 [2018-11-07 06:04:11,341 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-11-07 06:04:12,783 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 40 [2018-11-07 06:04:13,959 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2018-11-07 06:04:14,268 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-11-07 06:04:35,058 WARN L179 SmtUtils]: Spent 20.54 s on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-11-07 06:04:35,292 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2018-11-07 06:04:58,563 WARN L179 SmtUtils]: Spent 23.21 s on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2018-11-07 06:04:59,040 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2018-11-07 06:04:59,367 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2018-11-07 06:05:24,728 WARN L179 SmtUtils]: Spent 24.64 s on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-11-07 06:05:24,884 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 32 Received shutdown request... [2018-11-07 06:05:29,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-07 06:05:29,001 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:05:29,005 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:05:29,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:05:29 BoogieIcfgContainer [2018-11-07 06:05:29,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:05:29,006 INFO L168 Benchmark]: Toolchain (without parser) took 248884.80 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -335.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 06:05:29,007 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:05:29,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 06:05:29,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:05:29,009 INFO L168 Benchmark]: Boogie Preprocessor took 111.53 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:05:29,010 INFO L168 Benchmark]: RCFGBuilder took 2942.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2018-11-07 06:05:29,011 INFO L168 Benchmark]: TraceAbstraction took 245023.34 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 341.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 06:05:29,018 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.53 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 2942.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.7 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245023.34 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 341.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (3046states) and FLOYD_HOARE automaton (currently 40 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 72 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 244.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 165.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 792 SDtfs, 12586 SDslu, 2165 SDs, 0 SdLazy, 16462 SolverSat, 3618 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 58.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2890 GetRequests, 2542 SyntacticMatches, 126 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3670 ImplicationChecksByTransitivity, 150.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3046occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.995444153003983 AbsIntWeakeningRatio, 0.17490494296577946 AbsIntAvgWeakeningVarsNumRemoved, 13.34980988593156 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 791 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 72.2s InterpolantComputationTime, 2668 NumberOfCodeBlocks, 2668 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3845 ConstructedInterpolants, 140 QuantifiedInterpolants, 12476128 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1993 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 2009/3068 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown