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_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:30:35,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:30:35,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:30:35,140 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:30:35,140 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:30:35,141 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:30:35,142 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:30:35,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:30:35,146 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:30:35,147 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:30:35,148 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:30:35,148 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:30:35,149 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:30:35,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:30:35,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:30:35,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:30:35,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:30:35,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:30:35,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:30:35,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:30:35,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:30:35,163 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:30:35,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:30:35,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:30:35,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:30:35,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:30:35,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:30:35,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:30:35,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:30:35,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:30:35,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:30:35,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:30:35,175 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 [2018-10-25 01:30:35,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:30:35,203 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:30:35,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:30:35,204 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:30:35,204 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:30:35,205 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:30:35,205 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:30:35,205 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:30:35,205 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:30:35,205 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:30:35,206 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:30:35,206 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:30:35,206 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:30:35,206 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:30:35,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:30:35,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:30:35,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:30:35,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:30:35,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:30:35,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:30:35,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:30:35,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:30:35,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:30:35,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:30:35,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:30:35,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:30:35,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:30:35,210 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:30:35,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:30:35,210 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:30:35,210 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:30:35,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:30:35,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:30:35,211 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:30:35,211 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:30:35,211 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:30:35,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:30:35,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:30:35,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:30:35,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:30:35,276 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:30:35,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-10-25 01:30:35,352 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e410a5b4/4038c3852a384e4f817ffc67bf05df61/FLAG2b2321f0b [2018-10-25 01:30:36,057 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:30:36,059 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-10-25 01:30:36,075 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e410a5b4/4038c3852a384e4f817ffc67bf05df61/FLAG2b2321f0b [2018-10-25 01:30:36,098 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e410a5b4/4038c3852a384e4f817ffc67bf05df61 [2018-10-25 01:30:36,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:30:36,113 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:30:36,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:36,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:30:36,119 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:30:36,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:36" (1/1) ... [2018-10-25 01:30:36,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:36, skipping insertion in model container [2018-10-25 01:30:36,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:30:36" (1/1) ... [2018-10-25 01:30:36,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:30:36,232 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:30:36,881 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:36,886 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:30:37,166 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:37,188 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:30:37,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37 WrapperNode [2018-10-25 01:30:37,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:37,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:37,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:30:37,191 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:30:37,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:37,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:30:37,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:30:37,501 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:30:37,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (1/1) ... [2018-10-25 01:30:37,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:30:37,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:30:37,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:30:37,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:30:37,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (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 [2018-10-25 01:30:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:30:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:30:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:30:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:30:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:30:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:30:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:30:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:30:42,435 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:30:42,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:42 BoogieIcfgContainer [2018-10-25 01:30:42,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:30:42,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:30:42,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:30:42,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:30:42,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:30:36" (1/3) ... [2018-10-25 01:30:42,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:42, skipping insertion in model container [2018-10-25 01:30:42,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:37" (2/3) ... [2018-10-25 01:30:42,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:42, skipping insertion in model container [2018-10-25 01:30:42,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:42" (3/3) ... [2018-10-25 01:30:42,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label30_true-unreach-call.c [2018-10-25 01:30:42,459 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:30:42,478 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:30:42,498 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:30:42,545 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:30:42,545 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:30:42,545 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:30:42,546 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:30:42,546 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:30:42,546 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:30:42,546 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:30:42,546 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:30:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:30:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-25 01:30:42,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:42,584 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:42,586 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:42,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash 814847676, now seen corresponding path program 1 times [2018-10-25 01:30:42,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:42,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:42,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:42,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:42,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:43,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:43,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:43,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:43,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:43,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:43,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:43,143 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:30:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:47,053 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-25 01:30:47,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:47,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-25 01:30:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:47,080 INFO L225 Difference]: With dead ends: 1001 [2018-10-25 01:30:47,080 INFO L226 Difference]: Without dead ends: 702 [2018-10-25 01:30:47,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-25 01:30:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-25 01:30:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-25 01:30:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-25 01:30:47,193 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 36 [2018-10-25 01:30:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:47,194 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-25 01:30:47,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-25 01:30:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-25 01:30:47,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:47,202 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:47,202 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:47,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash -25993205, now seen corresponding path program 1 times [2018-10-25 01:30:47,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:47,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:47,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:47,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:47,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:47,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:47,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:47,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:47,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:47,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:47,566 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-25 01:30:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:52,984 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-25 01:30:52,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:30:52,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-25 01:30:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:53,004 INFO L225 Difference]: With dead ends: 2534 [2018-10-25 01:30:53,004 INFO L226 Difference]: Without dead ends: 1841 [2018-10-25 01:30:53,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:30:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-25 01:30:53,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-25 01:30:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-25 01:30:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-25 01:30:53,120 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 109 [2018-10-25 01:30:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:53,121 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-25 01:30:53,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:30:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-25 01:30:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-25 01:30:53,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:53,128 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:53,128 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:53,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1434902368, now seen corresponding path program 1 times [2018-10-25 01:30:53,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:53,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:53,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:53,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:53,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:53,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:53,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:53,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:53,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:53,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:53,323 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-25 01:30:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:56,139 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-10-25 01:30:56,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:56,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-25 01:30:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:56,162 INFO L225 Difference]: With dead ends: 4796 [2018-10-25 01:30:56,162 INFO L226 Difference]: Without dead ends: 2987 [2018-10-25 01:30:56,175 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 [2018-10-25 01:30:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-10-25 01:30:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-10-25 01:30:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-10-25 01:30:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-10-25 01:30:56,270 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 110 [2018-10-25 01:30:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:56,271 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-10-25 01:30:56,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-10-25 01:30:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-25 01:30:56,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:56,276 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:56,276 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:56,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash 579016823, now seen corresponding path program 1 times [2018-10-25 01:30:56,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:56,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:56,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:56,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:56,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:56,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:56,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:56,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:56,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:56,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:56,511 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-10-25 01:31:01,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:01,127 INFO L93 Difference]: Finished difference Result 11412 states and 20997 transitions. [2018-10-25 01:31:01,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:31:01,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-25 01:31:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:01,224 INFO L225 Difference]: With dead ends: 11412 [2018-10-25 01:31:01,225 INFO L226 Difference]: Without dead ends: 8448 [2018-10-25 01:31:01,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:31:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-25 01:31:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 7652. [2018-10-25 01:31:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2018-10-25 01:31:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11186 transitions. [2018-10-25 01:31:01,670 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11186 transitions. Word has length 135 [2018-10-25 01:31:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:01,671 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 11186 transitions. [2018-10-25 01:31:01,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11186 transitions. [2018-10-25 01:31:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-25 01:31:01,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:01,681 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:31:01,681 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:01,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1556909905, now seen corresponding path program 1 times [2018-10-25 01:31:01,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:01,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:01,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:01,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:01,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:02,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:02,042 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:02,043 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-10-25 01:31:02,045 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:02,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:02,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:02,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:31:02,544 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:31:02,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:02,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:31:03,117 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 73.35% of their original sizes. [2018-10-25 01:31:03,117 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:31:03,300 INFO L413 sIntCurrentIteration]: We have 182 unified AI predicates [2018-10-25 01:31:03,300 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:31:03,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:31:03,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:31:03,302 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:03,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:31:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:31:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:31:03,305 INFO L87 Difference]: Start difference. First operand 7652 states and 11186 transitions. Second operand 6 states. [2018-10-25 01:32:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:07,167 INFO L93 Difference]: Finished difference Result 15490 states and 22585 transitions. [2018-10-25 01:32:07,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:32:07,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-25 01:32:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:07,225 INFO L225 Difference]: With dead ends: 15490 [2018-10-25 01:32:07,225 INFO L226 Difference]: Without dead ends: 7844 [2018-10-25 01:32:07,255 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2018-10-25 01:32:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 7842. [2018-10-25 01:32:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2018-10-25 01:32:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 11387 transitions. [2018-10-25 01:32:07,519 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 11387 transitions. Word has length 183 [2018-10-25 01:32:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:07,520 INFO L481 AbstractCegarLoop]: Abstraction has 7842 states and 11387 transitions. [2018-10-25 01:32:07,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:32:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 11387 transitions. [2018-10-25 01:32:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-25 01:32:07,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:07,528 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:07,529 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:07,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash -386225441, now seen corresponding path program 1 times [2018-10-25 01:32:07,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:07,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:07,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:07,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:08,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:08,055 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:08,055 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-25 01:32:08,055 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [502], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:08,063 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:08,063 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:08,568 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:08,568 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:32:08,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:08,608 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:08,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:08,609 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 [2018-10-25 01:32:08,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:08,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:08,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:09,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:10,121 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:10,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:32:10,122 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:10,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:32:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:32:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:32:10,128 INFO L87 Difference]: Start difference. First operand 7842 states and 11387 transitions. Second operand 9 states. [2018-10-25 01:32:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:19,319 INFO L93 Difference]: Finished difference Result 21964 states and 42564 transitions. [2018-10-25 01:32:19,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:32:19,320 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2018-10-25 01:32:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:19,468 INFO L225 Difference]: With dead ends: 21964 [2018-10-25 01:32:19,468 INFO L226 Difference]: Without dead ends: 14318 [2018-10-25 01:32:19,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 483 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:32:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14318 states. [2018-10-25 01:32:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14318 to 14159. [2018-10-25 01:32:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14159 states. [2018-10-25 01:32:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14159 states to 14159 states and 24876 transitions. [2018-10-25 01:32:20,511 INFO L78 Accepts]: Start accepts. Automaton has 14159 states and 24876 transitions. Word has length 240 [2018-10-25 01:32:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:20,511 INFO L481 AbstractCegarLoop]: Abstraction has 14159 states and 24876 transitions. [2018-10-25 01:32:20,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:32:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14159 states and 24876 transitions. [2018-10-25 01:32:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-25 01:32:20,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:20,526 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:32:20,526 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:20,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1046651030, now seen corresponding path program 1 times [2018-10-25 01:32:20,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:20,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:20,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:20,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:20,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:21,038 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:32:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 61 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-25 01:32:21,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:21,252 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:21,252 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-10-25 01:32:21,253 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:21,258 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:21,258 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:21,983 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:21,983 INFO L272 AbstractInterpreter]: Visited 136 different actions 404 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:32:21,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:21,993 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:21,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:21,993 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 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 [2018-10-25 01:32:22,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:22,006 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:22,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 59 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:23,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:23,353 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-10-25 01:32:23,663 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-25 01:32:23,970 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:32:24,125 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:32:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 59 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:25,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:25,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-10-25 01:32:25,194 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:25,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:32:25,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:32:25,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:32:25,196 INFO L87 Difference]: Start difference. First operand 14159 states and 24876 transitions. Second operand 15 states. [2018-10-25 01:32:29,949 WARN L179 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-10-25 01:32:31,276 WARN L179 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-10-25 01:32:32,298 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-25 01:32:32,891 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-10-25 01:32:34,796 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-25 01:32:37,414 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-10-25 01:32:38,599 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-25 01:32:40,886 WARN L179 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-25 01:32:46,252 WARN L179 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-25 01:32:47,623 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-25 01:32:55,888 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-10-25 01:32:58,675 WARN L179 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2018-10-25 01:33:01,453 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-10-25 01:33:04,407 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-10-25 01:33:05,953 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-25 01:33:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:20,304 INFO L93 Difference]: Finished difference Result 49118 states and 95983 transitions. [2018-10-25 01:33:20,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-25 01:33:20,304 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 258 [2018-10-25 01:33:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:20,684 INFO L225 Difference]: With dead ends: 49118 [2018-10-25 01:33:20,684 INFO L226 Difference]: Without dead ends: 34831 [2018-10-25 01:33:20,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 509 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9312 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=2748, Invalid=21432, Unknown=0, NotChecked=0, Total=24180 [2018-10-25 01:33:20,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34831 states. [2018-10-25 01:33:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34831 to 34508. [2018-10-25 01:33:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34508 states. [2018-10-25 01:33:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34508 states to 34508 states and 62600 transitions. [2018-10-25 01:33:22,738 INFO L78 Accepts]: Start accepts. Automaton has 34508 states and 62600 transitions. Word has length 258 [2018-10-25 01:33:22,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:22,739 INFO L481 AbstractCegarLoop]: Abstraction has 34508 states and 62600 transitions. [2018-10-25 01:33:22,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 01:33:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 34508 states and 62600 transitions. [2018-10-25 01:33:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-25 01:33:22,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:22,751 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:33:22,751 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:22,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:22,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1681288795, now seen corresponding path program 1 times [2018-10-25 01:33:22,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:22,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:22,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:22,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:22,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 01:33:23,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:23,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:23,149 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-10-25 01:33:23,150 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:23,156 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:23,157 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:24,148 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:24,148 INFO L272 AbstractInterpreter]: Visited 141 different actions 560 times. Merged at 7 different actions 30 times. Widened at 1 different actions 3 times. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:33:24,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:24,175 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:24,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:24,175 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 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 [2018-10-25 01:33:24,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:24,187 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:24,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:24,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:24,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:24,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-25 01:33:24,529 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:24,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 01:33:24,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 01:33:24,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:33:24,530 INFO L87 Difference]: Start difference. First operand 34508 states and 62600 transitions. Second operand 11 states. [2018-10-25 01:33:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:31,049 INFO L93 Difference]: Finished difference Result 86327 states and 184150 transitions. [2018-10-25 01:33:31,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:33:31,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2018-10-25 01:33:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:31,593 INFO L225 Difference]: With dead ends: 86327 [2018-10-25 01:33:31,593 INFO L226 Difference]: Without dead ends: 50291 [2018-10-25 01:33:31,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 518 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-25 01:33:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50291 states. [2018-10-25 01:33:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50291 to 49065. [2018-10-25 01:33:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49065 states. [2018-10-25 01:33:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49065 states to 49065 states and 82804 transitions. [2018-10-25 01:33:35,166 INFO L78 Accepts]: Start accepts. Automaton has 49065 states and 82804 transitions. Word has length 258 [2018-10-25 01:33:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:35,167 INFO L481 AbstractCegarLoop]: Abstraction has 49065 states and 82804 transitions. [2018-10-25 01:33:35,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 01:33:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 49065 states and 82804 transitions. [2018-10-25 01:33:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-25 01:33:35,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:35,177 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:33:35,177 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:35,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 48645367, now seen corresponding path program 1 times [2018-10-25 01:33:35,178 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:35,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:35,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:35,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:35,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-25 01:33:35,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:35,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:33:35,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:35,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:33:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:33:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:33:35,386 INFO L87 Difference]: Start difference. First operand 49065 states and 82804 transitions. Second operand 3 states. [2018-10-25 01:33:40,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:40,407 INFO L93 Difference]: Finished difference Result 109653 states and 188358 transitions. [2018-10-25 01:33:40,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:33:40,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-10-25 01:33:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:40,929 INFO L225 Difference]: With dead ends: 109653 [2018-10-25 01:33:40,929 INFO L226 Difference]: Without dead ends: 58477 [2018-10-25 01:33:41,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:33:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58477 states. [2018-10-25 01:33:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58477 to 58283. [2018-10-25 01:33:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58283 states. [2018-10-25 01:33:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58283 states to 58283 states and 95515 transitions. [2018-10-25 01:33:44,898 INFO L78 Accepts]: Start accepts. Automaton has 58283 states and 95515 transitions. Word has length 260 [2018-10-25 01:33:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:44,899 INFO L481 AbstractCegarLoop]: Abstraction has 58283 states and 95515 transitions. [2018-10-25 01:33:44,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:33:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 58283 states and 95515 transitions. [2018-10-25 01:33:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-25 01:33:44,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:44,910 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:33:44,910 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:44,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1408350140, now seen corresponding path program 1 times [2018-10-25 01:33:44,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:44,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:44,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:44,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:44,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 65 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:45,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:45,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:45,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-25 01:33:45,504 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:45,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:45,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:46,295 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:46,296 INFO L272 AbstractInterpreter]: Visited 141 different actions 555 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:33:46,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:46,302 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:46,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:46,302 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 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 [2018-10-25 01:33:46,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:46,310 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:46,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:46,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:46,900 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-25 01:33:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 59 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:47,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:47,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-10-25 01:33:47,667 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:47,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:33:47,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:33:47,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:33:47,668 INFO L87 Difference]: Start difference. First operand 58283 states and 95515 transitions. Second operand 16 states. [2018-10-25 01:33:53,627 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-25 01:34:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:03,891 INFO L93 Difference]: Finished difference Result 135759 states and 292658 transitions. [2018-10-25 01:34:03,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-25 01:34:03,891 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 263 [2018-10-25 01:34:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:04,810 INFO L225 Difference]: With dead ends: 135759 [2018-10-25 01:34:04,811 INFO L226 Difference]: Without dead ends: 77112 [2018-10-25 01:34:05,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 517 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=929, Invalid=3493, Unknown=0, NotChecked=0, Total=4422 [2018-10-25 01:34:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77112 states. [2018-10-25 01:34:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77112 to 70100. [2018-10-25 01:34:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70100 states. [2018-10-25 01:34:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70100 states to 70100 states and 124446 transitions. [2018-10-25 01:34:10,248 INFO L78 Accepts]: Start accepts. Automaton has 70100 states and 124446 transitions. Word has length 263 [2018-10-25 01:34:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:10,248 INFO L481 AbstractCegarLoop]: Abstraction has 70100 states and 124446 transitions. [2018-10-25 01:34:10,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:34:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 70100 states and 124446 transitions. [2018-10-25 01:34:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-25 01:34:10,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:10,261 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:34:10,261 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:10,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:10,262 INFO L82 PathProgramCache]: Analyzing trace with hash 290792217, now seen corresponding path program 1 times [2018-10-25 01:34:10,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:10,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:10,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:10,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:10,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:10,612 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:34:10,955 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-25 01:34:11,201 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-25 01:34:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:11,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:11,792 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:11,793 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-10-25 01:34:11,793 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:11,796 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:11,797 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 01:34:16,140 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 01:34:16,141 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 01:34:16,141 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 01:34:16,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:16,141 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:16,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:16,153 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:16,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:16,280 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:34:16,481 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:16,482 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:34:16,487 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:34:16,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:34:16 BoogieIcfgContainer [2018-10-25 01:34:16,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:34:16,489 INFO L168 Benchmark]: Toolchain (without parser) took 220377.39 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 736.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:16,490 INFO L168 Benchmark]: CDTParser took 1.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:34:16,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1075.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:16,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 309.76 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -812.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:16,492 INFO L168 Benchmark]: Boogie Preprocessor took 166.06 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:34:16,492 INFO L168 Benchmark]: RCFGBuilder took 4769.84 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:16,493 INFO L168 Benchmark]: TraceAbstraction took 214050.46 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 579.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:34:16,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1075.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 309.76 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -812.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.06 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4769.84 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214050.46 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 579.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 93). Cancelled while BasicCegarLoop was analyzing trace of length 280 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 213.9s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 177.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2486 SDtfs, 19914 SDslu, 4249 SDs, 0 SdLazy, 42130 SolverSat, 6872 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 125.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2512 GetRequests, 2221 SyntacticMatches, 9 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10732 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70100occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.9s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9973957452803608 AbsIntWeakeningRatio, 0.15384615384615385 AbsIntAvgWeakeningVarsNumRemoved, 18.060439560439562 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 9758 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 2871 NumberOfCodeBlocks, 2871 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3872 ConstructedInterpolants, 7 QuantifiedInterpolants, 5927343 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1851 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 1668/2119 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown