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/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:38:56,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:38:56,204 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:38:56,216 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:38:56,216 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:38:56,217 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:38:56,219 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:38:56,221 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:38:56,222 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:38:56,223 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:38:56,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:38:56,225 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:38:56,226 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:38:56,227 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:38:56,228 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:38:56,229 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:38:56,230 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:38:56,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:38:56,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:38:56,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:38:56,236 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:38:56,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:38:56,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:38:56,241 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:38:56,241 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:38:56,242 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:38:56,243 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:38:56,244 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:38:56,244 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:38:56,245 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:38:56,246 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:38:56,246 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:38:56,247 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:38:56,247 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:38:56,248 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:38:56,249 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:38:56,249 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:38:56,276 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:38:56,276 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:38:56,277 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:38:56,277 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:38:56,277 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:38:56,278 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:38:56,278 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:38:56,278 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:38:56,278 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:38:56,279 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:38:56,279 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:38:56,279 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:38:56,279 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:38:56,279 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:38:56,281 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:38:56,281 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:38:56,281 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:38:56,281 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:38:56,281 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:38:56,282 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:38:56,282 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:38:56,282 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:38:56,282 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:38:56,282 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:38:56,283 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:38:56,284 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:38:56,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:38:56,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:38:56,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:38:56,285 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:38:56,285 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:38:56,285 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:38:56,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:38:56,286 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:38:56,286 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:38:56,287 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:38:56,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:38:56,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:38:56,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:38:56,371 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:38:56,371 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:38:56,372 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-27 08:38:56,429 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99d47593/02bce4e3c41d41848cd15b1d97d34d3b/FLAGc29bc43cc [2018-10-27 08:38:57,109 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:38:57,112 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-27 08:38:57,138 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99d47593/02bce4e3c41d41848cd15b1d97d34d3b/FLAGc29bc43cc [2018-10-27 08:38:57,160 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c99d47593/02bce4e3c41d41848cd15b1d97d34d3b [2018-10-27 08:38:57,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:38:57,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:38:57,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:38:57,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:38:57,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:38:57,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:57" (1/1) ... [2018-10-27 08:38:57,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba4e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:57, skipping insertion in model container [2018-10-27 08:38:57,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:57" (1/1) ... [2018-10-27 08:38:57,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:38:57,331 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:38:58,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:38:58,280 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:38:58,702 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:38:58,726 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:38:58,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58 WrapperNode [2018-10-27 08:38:58,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:38:58,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:38:58,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:38:58,728 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:38:58,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:58,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:38:59,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:38:59,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:38:59,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:38:59,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... [2018-10-27 08:38:59,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:38:59,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:38:59,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:38:59,519 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:38:59,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:38:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:38:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:38:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:38:59,591 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:38:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:38:59,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:38:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:38:59,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:38:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:38:59,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:39:09,499 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:39:09,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:09 BoogieIcfgContainer [2018-10-27 08:39:09,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:39:09,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:39:09,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:39:09,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:39:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:38:57" (1/3) ... [2018-10-27 08:39:09,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba90990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:09, skipping insertion in model container [2018-10-27 08:39:09,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:58" (2/3) ... [2018-10-27 08:39:09,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba90990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:09, skipping insertion in model container [2018-10-27 08:39:09,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:09" (3/3) ... [2018-10-27 08:39:09,509 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-10-27 08:39:09,519 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:39:09,528 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:39:09,546 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:39:09,590 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:39:09,590 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:39:09,590 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:39:09,590 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:39:09,590 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:39:09,591 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:39:09,591 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:39:09,591 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:39:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:39:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 08:39:09,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:09,638 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:09,640 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:09,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:09,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-10-27 08:39:09,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:09,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:09,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:09,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:09,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:10,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:10,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:39:10,187 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:10,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:39:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:39:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:39:10,212 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:39:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:19,425 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-27 08:39:19,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:39:19,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-27 08:39:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:19,462 INFO L225 Difference]: With dead ends: 2164 [2018-10-27 08:39:19,462 INFO L226 Difference]: Without dead ends: 1554 [2018-10-27 08:39:19,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:39:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-27 08:39:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-27 08:39:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-27 08:39:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-27 08:39:19,614 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 39 [2018-10-27 08:39:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:19,615 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-27 08:39:19,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:39:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-27 08:39:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-27 08:39:19,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:19,623 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:19,623 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:19,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-10-27 08:39:19,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:19,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:19,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:19,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:19,625 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:19,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:19,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:39:19,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:19,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:39:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:39:19,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:39:19,932 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-27 08:39:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:31,769 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-27 08:39:31,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:39:31,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-10-27 08:39:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:31,786 INFO L225 Difference]: With dead ends: 3031 [2018-10-27 08:39:31,786 INFO L226 Difference]: Without dead ends: 1985 [2018-10-27 08:39:31,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:39:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-27 08:39:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-27 08:39:31,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 08:39:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-27 08:39:31,871 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 111 [2018-10-27 08:39:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:31,871 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-27 08:39:31,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:39:31,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-27 08:39:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 08:39:31,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:31,880 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:31,880 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:31,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:31,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-10-27 08:39:31,881 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:31,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:31,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:31,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:31,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:32,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:32,378 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:39:32,379 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-27 08:39:32,381 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:39:32,428 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:39:32,429 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:39:33,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:39:33,341 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:39:33,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:33,388 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:39:33,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:33,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:39:33,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:33,407 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:39:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:33,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:39:38,027 WARN L179 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-27 08:39:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:38,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:39:38,964 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-27 08:39:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:39,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:39:39,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-27 08:39:39,358 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:39,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:39:39,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:39:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-27 08:39:39,359 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-27 08:40:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:13,013 INFO L93 Difference]: Finished difference Result 7518 states and 12893 transitions. [2018-10-27 08:40:13,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:40:13,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-27 08:40:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:13,055 INFO L225 Difference]: With dead ends: 7518 [2018-10-27 08:40:13,055 INFO L226 Difference]: Without dead ends: 5565 [2018-10-27 08:40:13,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-27 08:40:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2018-10-27 08:40:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5555. [2018-10-27 08:40:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5555 states. [2018-10-27 08:40:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9340 transitions. [2018-10-27 08:40:13,249 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 9340 transitions. Word has length 114 [2018-10-27 08:40:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:13,252 INFO L481 AbstractCegarLoop]: Abstraction has 5555 states and 9340 transitions. [2018-10-27 08:40:13,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 9340 transitions. [2018-10-27 08:40:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 08:40:13,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:13,260 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:13,260 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:13,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-10-27 08:40:13,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:13,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:13,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:13,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:13,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:13,610 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:40:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:13,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:13,998 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:13,998 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-27 08:40:13,999 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:14,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:14,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:14,256 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:14,256 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:40:14,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:14,283 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:14,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:14,283 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 [2018-10-27 08:40:14,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:14,300 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:14,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:14,437 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:14,583 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:40:14,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 08:40:14,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:14,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:40:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:40:14,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:40:14,585 INFO L87 Difference]: Start difference. First operand 5555 states and 9340 transitions. Second operand 3 states. [2018-10-27 08:40:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:18,615 INFO L93 Difference]: Finished difference Result 13726 states and 22953 transitions. [2018-10-27 08:40:18,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:40:18,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-10-27 08:40:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:18,660 INFO L225 Difference]: With dead ends: 13726 [2018-10-27 08:40:18,661 INFO L226 Difference]: Without dead ends: 8177 [2018-10-27 08:40:18,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:40:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2018-10-27 08:40:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8176. [2018-10-27 08:40:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8176 states. [2018-10-27 08:40:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12764 transitions. [2018-10-27 08:40:18,926 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12764 transitions. Word has length 127 [2018-10-27 08:40:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:18,927 INFO L481 AbstractCegarLoop]: Abstraction has 8176 states and 12764 transitions. [2018-10-27 08:40:18,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:40:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12764 transitions. [2018-10-27 08:40:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-27 08:40:18,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:18,937 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:40:18,938 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:18,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:18,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-10-27 08:40:18,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:18,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:18,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:18,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:18,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:19,262 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:40:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 08:40:19,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:19,542 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:19,542 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-27 08:40:19,543 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:19,547 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:19,548 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:20,075 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:20,075 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:40:20,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:20,113 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:20,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:20,113 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 [2018-10-27 08:40:20,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:20,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:20,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:20,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:21,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:40:21,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:40:21,014 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:40:21,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:40:21,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:40:21,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:40:21,016 INFO L87 Difference]: Start difference. First operand 8176 states and 12764 transitions. Second operand 9 states. [2018-10-27 08:40:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:30,292 INFO L93 Difference]: Finished difference Result 16005 states and 25151 transitions. [2018-10-27 08:40:30,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:40:30,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2018-10-27 08:40:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:30,326 INFO L225 Difference]: With dead ends: 16005 [2018-10-27 08:40:30,331 INFO L226 Difference]: Without dead ends: 6865 [2018-10-27 08:40:30,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 422 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:40:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2018-10-27 08:40:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6832. [2018-10-27 08:40:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-27 08:40:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 8194 transitions. [2018-10-27 08:40:30,511 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 8194 transitions. Word has length 212 [2018-10-27 08:40:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:30,512 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 8194 transitions. [2018-10-27 08:40:30,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:40:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 8194 transitions. [2018-10-27 08:40:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-27 08:40:30,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:30,518 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:30,518 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:30,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:30,518 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-10-27 08:40:30,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:30,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:30,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:30,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:30,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:40:30,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:30,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:40:30,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:30,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:40:30,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:40:30,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:30,917 INFO L87 Difference]: Start difference. First operand 6832 states and 8194 transitions. Second operand 4 states. [2018-10-27 08:40:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:36,169 INFO L93 Difference]: Finished difference Result 24673 states and 30270 transitions. [2018-10-27 08:40:36,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:40:36,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-10-27 08:40:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:36,218 INFO L225 Difference]: With dead ends: 24673 [2018-10-27 08:40:36,218 INFO L226 Difference]: Without dead ends: 14271 [2018-10-27 08:40:36,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2018-10-27 08:40:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 14265. [2018-10-27 08:40:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14265 states. [2018-10-27 08:40:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 16712 transitions. [2018-10-27 08:40:36,499 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 16712 transitions. Word has length 293 [2018-10-27 08:40:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:36,499 INFO L481 AbstractCegarLoop]: Abstraction has 14265 states and 16712 transitions. [2018-10-27 08:40:36,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:40:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 16712 transitions. [2018-10-27 08:40:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-27 08:40:36,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:36,515 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:36,515 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:36,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-10-27 08:40:36,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:36,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:36,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:36,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:36,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:37,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:37,029 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:37,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-27 08:40:37,030 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:37,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:37,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:38,142 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:38,142 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:40:38,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:38,169 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:38,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:38,169 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 [2018-10-27 08:40:38,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:38,184 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:38,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:38,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:38,940 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:40:39,043 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:40:39,153 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:40:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:39,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:40:39,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-27 08:40:39,936 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:39,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:39,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:40:39,938 INFO L87 Difference]: Start difference. First operand 14265 states and 16712 transitions. Second operand 6 states. [2018-10-27 08:40:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:48,484 INFO L93 Difference]: Finished difference Result 30283 states and 35476 transitions. [2018-10-27 08:40:48,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:40:48,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-10-27 08:40:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:48,530 INFO L225 Difference]: With dead ends: 30283 [2018-10-27 08:40:48,531 INFO L226 Difference]: Without dead ends: 15590 [2018-10-27 08:40:48,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:40:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2018-10-27 08:40:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 15148. [2018-10-27 08:40:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15148 states. [2018-10-27 08:40:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 17757 transitions. [2018-10-27 08:40:48,822 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 17757 transitions. Word has length 387 [2018-10-27 08:40:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:48,823 INFO L481 AbstractCegarLoop]: Abstraction has 15148 states and 17757 transitions. [2018-10-27 08:40:48,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 17757 transitions. [2018-10-27 08:40:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-10-27 08:40:48,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:48,855 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:48,855 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:48,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-10-27 08:40:48,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:48,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:48,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:48,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:48,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-27 08:40:49,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:49,695 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:49,695 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-10-27 08:40:49,696 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:49,704 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:49,704 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:50,182 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:50,182 INFO L272 AbstractInterpreter]: Visited 216 different actions 435 times. Merged at 9 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:40:50,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:50,218 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:50,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:50,219 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) [2018-10-27 08:40:50,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:50,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:40:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:50,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-27 08:40:50,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-27 08:40:51,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:40:51,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-27 08:40:51,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:51,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:40:51,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:40:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:51,138 INFO L87 Difference]: Start difference. First operand 15148 states and 17757 transitions. Second operand 3 states. [2018-10-27 08:40:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:54,434 INFO L93 Difference]: Finished difference Result 41252 states and 49246 transitions. [2018-10-27 08:40:54,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:40:54,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-10-27 08:40:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:54,530 INFO L225 Difference]: With dead ends: 41252 [2018-10-27 08:40:54,530 INFO L226 Difference]: Without dead ends: 26110 [2018-10-27 08:40:54,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26110 states. [2018-10-27 08:40:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26110 to 26091. [2018-10-27 08:40:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26091 states. [2018-10-27 08:40:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26091 states to 26091 states and 30731 transitions. [2018-10-27 08:40:55,295 INFO L78 Accepts]: Start accepts. Automaton has 26091 states and 30731 transitions. Word has length 575 [2018-10-27 08:40:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:55,296 INFO L481 AbstractCegarLoop]: Abstraction has 26091 states and 30731 transitions. [2018-10-27 08:40:55,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:40:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 26091 states and 30731 transitions. [2018-10-27 08:40:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-10-27 08:40:55,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:55,351 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:40:55,351 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:55,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:55,352 INFO L82 PathProgramCache]: Analyzing trace with hash 905567621, now seen corresponding path program 1 times [2018-10-27 08:40:55,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:55,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:55,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:55,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-10-27 08:40:56,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:56,105 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:56,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 654 with the following transitions: [2018-10-27 08:40:56,106 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1810], [1815], [1817], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1917], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:56,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:56,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:57,380 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:57,380 INFO L272 AbstractInterpreter]: Visited 230 different actions 462 times. Merged at 9 different actions 16 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:40:57,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:57,417 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:57,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:57,418 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:40:57,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:57,699 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:57,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-27 08:40:58,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-10-27 08:40:58,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:40:58,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 08:40:58,761 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:40:58,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:40:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:40:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:40:58,763 INFO L87 Difference]: Start difference. First operand 26091 states and 30731 transitions. Second operand 7 states. [2018-10-27 08:41:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:41:06,475 INFO L93 Difference]: Finished difference Result 60428 states and 73530 transitions. [2018-10-27 08:41:06,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 08:41:06,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-10-27 08:41:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:41:06,576 INFO L225 Difference]: With dead ends: 60428 [2018-10-27 08:41:06,576 INFO L226 Difference]: Without dead ends: 34777 [2018-10-27 08:41:06,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1307 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-27 08:41:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34777 states. [2018-10-27 08:41:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34777 to 33347. [2018-10-27 08:41:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33347 states. [2018-10-27 08:41:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33347 states to 33347 states and 39814 transitions. [2018-10-27 08:41:07,534 INFO L78 Accepts]: Start accepts. Automaton has 33347 states and 39814 transitions. Word has length 653 [2018-10-27 08:41:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:41:07,535 INFO L481 AbstractCegarLoop]: Abstraction has 33347 states and 39814 transitions. [2018-10-27 08:41:07,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:41:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 33347 states and 39814 transitions. [2018-10-27 08:41:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-10-27 08:41:07,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:41:07,588 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:41:07,588 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:41:07,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash -176426799, now seen corresponding path program 1 times [2018-10-27 08:41:07,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:41:07,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:07,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:07,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:07,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:41:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-27 08:41:08,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:08,327 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:41:08,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 721 with the following transitions: [2018-10-27 08:41:08,328 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [590], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:41:08,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:41:08,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:41:09,360 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:41:09,361 INFO L272 AbstractInterpreter]: Visited 418 different actions 836 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:41:09,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:09,397 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:41:09,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:09,397 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 08:41:09,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:09,412 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:41:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:09,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:41:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-27 08:41:10,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:41:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 150 proven. 8 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-27 08:41:10,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:41:10,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-10-27 08:41:10,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:41:10,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:41:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:41:10,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:41:10,751 INFO L87 Difference]: Start difference. First operand 33347 states and 39814 transitions. Second operand 3 states. [2018-10-27 08:41:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:41:12,275 INFO L93 Difference]: Finished difference Result 62703 states and 75002 transitions. [2018-10-27 08:41:12,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:41:12,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 720 [2018-10-27 08:41:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:41:12,353 INFO L225 Difference]: With dead ends: 62703 [2018-10-27 08:41:12,353 INFO L226 Difference]: Without dead ends: 29795 [2018-10-27 08:41:12,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1435 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:41:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29795 states. [2018-10-27 08:41:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29795 to 29357. [2018-10-27 08:41:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29357 states. [2018-10-27 08:41:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29357 states to 29357 states and 35018 transitions. [2018-10-27 08:41:12,857 INFO L78 Accepts]: Start accepts. Automaton has 29357 states and 35018 transitions. Word has length 720 [2018-10-27 08:41:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:41:12,858 INFO L481 AbstractCegarLoop]: Abstraction has 29357 states and 35018 transitions. [2018-10-27 08:41:12,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:41:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29357 states and 35018 transitions. [2018-10-27 08:41:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-27 08:41:12,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:41:12,906 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:41:12,906 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:41:12,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2080661305, now seen corresponding path program 1 times [2018-10-27 08:41:12,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:41:12,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:12,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:12,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:12,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:41:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 326 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-27 08:41:13,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:13,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:41:13,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 729 with the following transitions: [2018-10-27 08:41:13,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:41:13,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:41:13,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:41:14,821 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:41:14,822 INFO L272 AbstractInterpreter]: Visited 325 different actions 654 times. Merged at 9 different actions 19 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:41:14,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:14,844 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:41:14,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:14,844 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:41:14,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:14,853 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:41:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:15,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:41:15,488 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 08:41:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-10-27 08:41:15,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:41:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-27 08:41:17,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:41:17,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-27 08:41:17,158 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:41:17,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:41:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:41:17,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-27 08:41:17,160 INFO L87 Difference]: Start difference. First operand 29357 states and 35018 transitions. Second operand 9 states. [2018-10-27 08:42:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:42:56,063 INFO L93 Difference]: Finished difference Result 68661 states and 83415 transitions. [2018-10-27 08:42:56,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 08:42:56,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 728 [2018-10-27 08:42:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:42:56,176 INFO L225 Difference]: With dead ends: 68661 [2018-10-27 08:42:56,177 INFO L226 Difference]: Without dead ends: 39744 [2018-10-27 08:42:56,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1485 GetRequests, 1460 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:42:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39744 states. [2018-10-27 08:42:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39744 to 37692. [2018-10-27 08:42:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37692 states. [2018-10-27 08:42:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37692 states to 37692 states and 44300 transitions. [2018-10-27 08:42:56,879 INFO L78 Accepts]: Start accepts. Automaton has 37692 states and 44300 transitions. Word has length 728 [2018-10-27 08:42:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:42:56,880 INFO L481 AbstractCegarLoop]: Abstraction has 37692 states and 44300 transitions. [2018-10-27 08:42:56,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:42:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 37692 states and 44300 transitions. [2018-10-27 08:42:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-10-27 08:42:56,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:42:56,931 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:42:56,931 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:42:56,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:56,932 INFO L82 PathProgramCache]: Analyzing trace with hash 175578229, now seen corresponding path program 1 times [2018-10-27 08:42:56,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:42:56,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:56,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:42:56,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:56,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:42:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:42:58,333 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 08:42:59,014 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-27 08:42:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 182 proven. 615 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-27 08:42:59,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:42:59,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:42:59,693 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 839 with the following transitions: [2018-10-27 08:42:59,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:42:59,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:42:59,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 08:43:00,156 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:43:00,157 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:43:00,158 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:43:00,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:43:00,158 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:43:00,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:43:00,169 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:43:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:43:00,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:43:00,414 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:43:00,615 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:43:00,615 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:43:00,622 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:43:00,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:43:00 BoogieIcfgContainer [2018-10-27 08:43:00,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:43:00,623 INFO L168 Benchmark]: Toolchain (without parser) took 243450.01 ms. Allocated memory was 1.6 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 321.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:00,625 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:43:00,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1551.12 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:00,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 439.81 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 809.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -963.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:00,628 INFO L168 Benchmark]: Boogie Preprocessor took 350.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:00,630 INFO L168 Benchmark]: RCFGBuilder took 9981.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 477.6 MB). Peak memory consumption was 477.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:43:00,631 INFO L168 Benchmark]: TraceAbstraction took 231120.91 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:43:00,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1551.12 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 439.81 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 809.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -963.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 350.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9981.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 477.6 MB). Peak memory consumption was 477.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231120.91 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was analyzing trace of length 839 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 231.0s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 194.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2912 SDtfs, 17346 SDslu, 2008 SDs, 0 SdLazy, 28614 SolverSat, 7919 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 182.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7145 GetRequests, 7032 SyntacticMatches, 20 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37692occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.4s AbstIntTime, 9 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 4959 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 7475 NumberOfCodeBlocks, 7475 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 10964 ConstructedInterpolants, 173 QuantifiedInterpolants, 13770105 SizeOfPredicates, 14 NumberOfNonLiveVariables, 5323 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 8577/9685 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown