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/Problem03_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:17:40,490 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:17:40,493 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:17:40,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:17:40,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:17:40,515 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:17:40,516 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:17:40,518 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:17:40,522 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:17:40,523 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:17:40,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:17:40,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:17:40,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:17:40,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:17:40,536 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:17:40,538 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:17:40,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:17:40,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:17:40,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:17:40,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:17:40,552 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:17:40,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:17:40,557 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:17:40,565 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:17:40,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:17:40,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:17:40,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:17:40,583 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:17:40,587 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:17:40,587 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:17:40,587 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:17:40,587 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:17:40,587 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:17:40,588 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:17:40,588 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:17:40,588 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:17:40,588 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:17:40,588 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:17:40,590 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:17:40,590 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:17:40,590 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:17:40,590 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:17:40,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:17:40,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:17:40,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:17:40,591 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:17:40,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:17:40,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:17:40,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:17:40,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:17:40,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:40,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:17:40,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:17:40,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:17:40,595 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:17:40,595 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:17:40,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:17:40,595 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:17:40,595 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:17:40,596 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:17:40,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:17:40,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:17:40,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:17:40,659 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:17:40,660 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:17:40,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-10-25 00:17:40,721 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce554a1db/57a2b5f146f44b2d9eff916a939e7ecb/FLAGbb4bb580e [2018-10-25 00:17:41,369 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:17:41,370 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label48_true-unreach-call.c [2018-10-25 00:17:41,390 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce554a1db/57a2b5f146f44b2d9eff916a939e7ecb/FLAGbb4bb580e [2018-10-25 00:17:41,407 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce554a1db/57a2b5f146f44b2d9eff916a939e7ecb [2018-10-25 00:17:41,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:17:41,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:17:41,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:41,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:17:41,429 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:17:41,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:41" (1/1) ... [2018-10-25 00:17:41,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:41, skipping insertion in model container [2018-10-25 00:17:41,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:17:41" (1/1) ... [2018-10-25 00:17:41,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:17:41,536 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:17:42,154 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:42,163 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:17:42,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:17:42,425 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:17:42,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42 WrapperNode [2018-10-25 00:17:42,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:17:42,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:42,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:17:42,427 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:17:42,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:17:42,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:17:42,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:17:42,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:17:42,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... [2018-10-25 00:17:42,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:17:42,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:17:42,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:17:42,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:17:42,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:17:42,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:17:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:17:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:17:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:17:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:17:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:17:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:17:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:17:48,299 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:17:48,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:48 BoogieIcfgContainer [2018-10-25 00:17:48,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:17:48,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:17:48,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:17:48,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:17:48,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:17:41" (1/3) ... [2018-10-25 00:17:48,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d05e0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:48, skipping insertion in model container [2018-10-25 00:17:48,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:17:42" (2/3) ... [2018-10-25 00:17:48,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d05e0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:17:48, skipping insertion in model container [2018-10-25 00:17:48,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:17:48" (3/3) ... [2018-10-25 00:17:48,313 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label48_true-unreach-call.c [2018-10-25 00:17:48,324 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:17:48,334 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:17:48,353 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:17:48,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:17:48,406 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:17:48,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:17:48,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:17:48,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:17:48,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:17:48,407 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:17:48,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:17:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:17:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-25 00:17:48,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:48,463 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:48,465 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:48,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:48,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1967383007, now seen corresponding path program 1 times [2018-10-25 00:17:48,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:48,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:48,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:48,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:48,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:49,438 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-25 00:17:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:49,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:49,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:17:49,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:49,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:17:49,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:17:49,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:49,922 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:17:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:53,198 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-10-25 00:17:53,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:17:53,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-10-25 00:17:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:53,229 INFO L225 Difference]: With dead ends: 1058 [2018-10-25 00:17:53,229 INFO L226 Difference]: Without dead ends: 740 [2018-10-25 00:17:53,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:17:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-10-25 00:17:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-10-25 00:17:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-25 00:17:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-10-25 00:17:53,345 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 190 [2018-10-25 00:17:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:53,346 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-10-25 00:17:53,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:17:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-10-25 00:17:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-25 00:17:53,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:53,356 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:17:53,356 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:53,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 805361829, now seen corresponding path program 1 times [2018-10-25 00:17:53,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:53,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:53,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:53,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:53,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:53,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:53,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:53,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:53,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:53,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:53,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:53,795 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-10-25 00:17:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:55,639 INFO L93 Difference]: Finished difference Result 1473 states and 2531 transitions. [2018-10-25 00:17:55,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:55,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-25 00:17:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:55,656 INFO L225 Difference]: With dead ends: 1473 [2018-10-25 00:17:55,656 INFO L226 Difference]: Without dead ends: 954 [2018-10-25 00:17:55,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-25 00:17:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2018-10-25 00:17:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2018-10-25 00:17:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1506 transitions. [2018-10-25 00:17:55,706 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1506 transitions. Word has length 203 [2018-10-25 00:17:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:55,707 INFO L481 AbstractCegarLoop]: Abstraction has 953 states and 1506 transitions. [2018-10-25 00:17:55,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1506 transitions. [2018-10-25 00:17:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 00:17:55,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:55,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:55,715 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:55,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash 190939521, now seen corresponding path program 1 times [2018-10-25 00:17:55,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:55,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:55,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:55,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:55,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:56,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:56,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:17:56,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:56,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:17:56,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:17:56,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:56,048 INFO L87 Difference]: Start difference. First operand 953 states and 1506 transitions. Second operand 3 states. [2018-10-25 00:17:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:59,314 INFO L93 Difference]: Finished difference Result 2750 states and 4459 transitions. [2018-10-25 00:17:59,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:17:59,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-10-25 00:17:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:59,342 INFO L225 Difference]: With dead ends: 2750 [2018-10-25 00:17:59,342 INFO L226 Difference]: Without dead ends: 1803 [2018-10-25 00:17:59,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:17:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-25 00:17:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-10-25 00:17:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-10-25 00:17:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2785 transitions. [2018-10-25 00:17:59,426 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2785 transitions. Word has length 205 [2018-10-25 00:17:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:59,427 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 2785 transitions. [2018-10-25 00:17:59,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:17:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2785 transitions. [2018-10-25 00:17:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-25 00:17:59,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:59,437 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-25 00:17:59,437 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:59,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash -332724808, now seen corresponding path program 1 times [2018-10-25 00:17:59,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:59,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:59,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:59,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:59,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:59,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:17:59,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:17:59,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:17:59,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:17:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:17:59,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:17:59,687 INFO L87 Difference]: Start difference. First operand 1786 states and 2785 transitions. Second operand 6 states. [2018-10-25 00:18:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:18:02,551 INFO L93 Difference]: Finished difference Result 5463 states and 9326 transitions. [2018-10-25 00:18:02,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:18:02,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-25 00:18:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:18:02,601 INFO L225 Difference]: With dead ends: 5463 [2018-10-25 00:18:02,602 INFO L226 Difference]: Without dead ends: 3683 [2018-10-25 00:18:02,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:18:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2018-10-25 00:18:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3573. [2018-10-25 00:18:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2018-10-25 00:18:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 5686 transitions. [2018-10-25 00:18:02,766 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 5686 transitions. Word has length 208 [2018-10-25 00:18:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:18:02,766 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 5686 transitions. [2018-10-25 00:18:02,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:18:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 5686 transitions. [2018-10-25 00:18:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 00:18:02,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:18:02,783 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:18:02,784 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:18:02,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1900171544, now seen corresponding path program 1 times [2018-10-25 00:18:02,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:18:02,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:02,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:18:02,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:18:02,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:18:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:18:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:18:03,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:18:03,087 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:18:03,087 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-25 00:18:03,090 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:18:03,178 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:18:03,178 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:18:04,286 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:18:04,288 INFO L272 AbstractInterpreter]: Visited 191 different actions 191 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:18:04,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:18:04,332 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:18:05,375 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 73.47% of their original sizes. [2018-10-25 00:18:05,376 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:18:05,931 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-25 00:18:05,931 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:18:05,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:18:05,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:18:05,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:18:05,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:18:05,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:18:05,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:18:05,935 INFO L87 Difference]: Start difference. First operand 3573 states and 5686 transitions. Second operand 13 states. [2018-10-25 00:19:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:19:10,631 INFO L93 Difference]: Finished difference Result 7350 states and 11727 transitions. [2018-10-25 00:19:10,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:19:10,631 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 223 [2018-10-25 00:19:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:19:10,649 INFO L225 Difference]: With dead ends: 7350 [2018-10-25 00:19:10,650 INFO L226 Difference]: Without dead ends: 3783 [2018-10-25 00:19:10,664 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:19:10,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2018-10-25 00:19:10,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2018-10-25 00:19:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2018-10-25 00:19:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5904 transitions. [2018-10-25 00:19:10,773 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5904 transitions. Word has length 223 [2018-10-25 00:19:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:19:10,774 INFO L481 AbstractCegarLoop]: Abstraction has 3781 states and 5904 transitions. [2018-10-25 00:19:10,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:19:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5904 transitions. [2018-10-25 00:19:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-25 00:19:10,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:19:10,792 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:19:10,792 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:19:10,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:10,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2107279691, now seen corresponding path program 1 times [2018-10-25 00:19:10,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:19:10,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:10,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:19:10,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:19:10,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:19:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:19:11,069 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:19:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:19:11,368 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:19:11,368 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:19:11,368 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-10-25 00:19:11,369 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:19:11,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:19:11,379 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:19:12,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:19:12,639 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:19:12,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:19:12,647 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:19:14,366 INFO L232 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 73.31% of their original sizes. [2018-10-25 00:19:14,366 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:19:14,906 INFO L413 sIntCurrentIteration]: We have 234 unified AI predicates [2018-10-25 00:19:14,906 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:19:14,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:19:14,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [10] total 28 [2018-10-25 00:19:14,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:19:14,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:19:14,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:19:14,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:19:14,908 INFO L87 Difference]: Start difference. First operand 3781 states and 5904 transitions. Second operand 20 states. [2018-10-25 00:20:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:38,064 INFO L93 Difference]: Finished difference Result 7562 states and 11951 transitions. [2018-10-25 00:20:38,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:20:38,064 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 235 [2018-10-25 00:20:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:38,082 INFO L225 Difference]: With dead ends: 7562 [2018-10-25 00:20:38,082 INFO L226 Difference]: Without dead ends: 3995 [2018-10-25 00:20:38,093 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:20:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2018-10-25 00:20:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3992. [2018-10-25 00:20:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2018-10-25 00:20:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6132 transitions. [2018-10-25 00:20:38,200 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6132 transitions. Word has length 235 [2018-10-25 00:20:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:38,200 INFO L481 AbstractCegarLoop]: Abstraction has 3992 states and 6132 transitions. [2018-10-25 00:20:38,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:20:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6132 transitions. [2018-10-25 00:20:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-25 00:20:38,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:38,218 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:20:38,218 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:38,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:38,219 INFO L82 PathProgramCache]: Analyzing trace with hash 26603704, now seen corresponding path program 1 times [2018-10-25 00:20:38,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:38,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:38,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:38,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:38,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:20:38,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:38,554 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:38,554 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-25 00:20:38,555 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:38,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:38,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:43,136 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:43,136 INFO L272 AbstractInterpreter]: Visited 198 different actions 588 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:20:43,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:43,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:43,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:43,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:43,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:43,155 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:43,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:20:43,948 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:44,171 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 00:20:44,273 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 00:20:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-25 00:20:44,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:20:44,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-25 00:20:44,866 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:20:44,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:20:44,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:20:44,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:20:44,868 INFO L87 Difference]: Start difference. First operand 3992 states and 6132 transitions. Second operand 8 states. [2018-10-25 00:20:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:20:50,277 INFO L93 Difference]: Finished difference Result 14862 states and 29181 transitions. [2018-10-25 00:20:50,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 00:20:50,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-10-25 00:20:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:20:50,404 INFO L225 Difference]: With dead ends: 14862 [2018-10-25 00:20:50,405 INFO L226 Difference]: Without dead ends: 11295 [2018-10-25 00:20:50,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-25 00:20:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2018-10-25 00:20:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 11055. [2018-10-25 00:20:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11055 states. [2018-10-25 00:20:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11055 states to 11055 states and 18460 transitions. [2018-10-25 00:20:51,055 INFO L78 Accepts]: Start accepts. Automaton has 11055 states and 18460 transitions. Word has length 241 [2018-10-25 00:20:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:20:51,056 INFO L481 AbstractCegarLoop]: Abstraction has 11055 states and 18460 transitions. [2018-10-25 00:20:51,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:20:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 11055 states and 18460 transitions. [2018-10-25 00:20:51,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-25 00:20:51,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:20:51,123 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-25 00:20:51,123 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:20:51,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1105756810, now seen corresponding path program 1 times [2018-10-25 00:20:51,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:20:51,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:51,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:51,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:20:51,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:20:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 90 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-25 00:20:51,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:51,681 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:20:51,681 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-25 00:20:51,681 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:20:51,690 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:20:51,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:20:56,955 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:20:56,955 INFO L272 AbstractInterpreter]: Visited 199 different actions 591 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:20:56,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:20:56,962 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:20:56,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:20:56,962 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:20:56,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:20:56,970 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:20:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:20:57,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:20:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-25 00:20:57,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:20:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 89 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-25 00:20:57,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:20:57,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:20:57,565 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:20:57,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:20:57,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:20:57,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:20:57,567 INFO L87 Difference]: Start difference. First operand 11055 states and 18460 transitions. Second operand 9 states. [2018-10-25 00:21:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:00,694 INFO L93 Difference]: Finished difference Result 31269 states and 54930 transitions. [2018-10-25 00:21:00,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:21:00,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2018-10-25 00:21:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:00,836 INFO L225 Difference]: With dead ends: 31269 [2018-10-25 00:21:00,837 INFO L226 Difference]: Without dead ends: 20639 [2018-10-25 00:21:00,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:21:00,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20639 states. [2018-10-25 00:21:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20639 to 18960. [2018-10-25 00:21:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18960 states. [2018-10-25 00:21:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18960 states to 18960 states and 28625 transitions. [2018-10-25 00:21:01,678 INFO L78 Accepts]: Start accepts. Automaton has 18960 states and 28625 transitions. Word has length 266 [2018-10-25 00:21:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:01,679 INFO L481 AbstractCegarLoop]: Abstraction has 18960 states and 28625 transitions. [2018-10-25 00:21:01,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:21:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 18960 states and 28625 transitions. [2018-10-25 00:21:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-25 00:21:01,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:01,757 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-25 00:21:01,757 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:01,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash -138689525, now seen corresponding path program 1 times [2018-10-25 00:21:01,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:01,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:01,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:21:02,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:02,779 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:02,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-10-25 00:21:02,780 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:02,787 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:02,787 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:07,466 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:07,467 INFO L272 AbstractInterpreter]: Visited 196 different actions 586 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:21:07,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:07,474 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:07,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:07,474 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:07,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:07,483 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:07,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-25 00:21:08,068 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-25 00:21:08,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:21:08,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-25 00:21:08,369 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:21:08,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 00:21:08,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 00:21:08,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:21:08,370 INFO L87 Difference]: Start difference. First operand 18960 states and 28625 transitions. Second operand 8 states. [2018-10-25 00:21:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:21:15,119 INFO L93 Difference]: Finished difference Result 56375 states and 91751 transitions. [2018-10-25 00:21:15,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-25 00:21:15,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2018-10-25 00:21:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:21:15,345 INFO L225 Difference]: With dead ends: 56375 [2018-10-25 00:21:15,346 INFO L226 Difference]: Without dead ends: 37629 [2018-10-25 00:21:15,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2018-10-25 00:21:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2018-10-25 00:21:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 36562. [2018-10-25 00:21:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36562 states. [2018-10-25 00:21:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36562 states to 36562 states and 49985 transitions. [2018-10-25 00:21:16,698 INFO L78 Accepts]: Start accepts. Automaton has 36562 states and 49985 transitions. Word has length 293 [2018-10-25 00:21:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:21:16,698 INFO L481 AbstractCegarLoop]: Abstraction has 36562 states and 49985 transitions. [2018-10-25 00:21:16,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 00:21:16,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36562 states and 49985 transitions. [2018-10-25 00:21:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-25 00:21:16,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:21:16,784 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 00:21:16,784 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:21:16,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:16,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1319546731, now seen corresponding path program 1 times [2018-10-25 00:21:16,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:21:16,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:16,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:16,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:21:16,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:21:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:17,419 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:21:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 191 proven. 88 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-25 00:21:18,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:18,099 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:21:18,099 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-10-25 00:21:18,100 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [111], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [213], [216], [220], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [981], [983], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:21:18,106 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:21:18,106 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:21:22,471 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:21:22,472 INFO L272 AbstractInterpreter]: Visited 199 different actions 594 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:21:22,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:21:22,477 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:21:22,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:21:22,477 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 00:21:22,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:21:22,484 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:21:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:21:22,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:21:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-25 00:21:23,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:21:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 246 proven. 31 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 00:21:23,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:21:23,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:21:23,942 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:21:23,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:21:23,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:21:23,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:21:23,943 INFO L87 Difference]: Start difference. First operand 36562 states and 49985 transitions. Second operand 9 states. [2018-10-25 00:21:24,208 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 Received shutdown request... [2018-10-25 00:21:34,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-25 00:21:34,543 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:21:34,547 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:21:34,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:21:34 BoogieIcfgContainer [2018-10-25 00:21:34,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:21:34,549 INFO L168 Benchmark]: Toolchain (without parser) took 233127.38 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,550 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:21:34,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1002.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 350.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,552 INFO L168 Benchmark]: Boogie Preprocessor took 147.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,553 INFO L168 Benchmark]: RCFGBuilder took 5378.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.8 MB). Peak memory consumption was 252.8 MB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,553 INFO L168 Benchmark]: TraceAbstraction took 226243.22 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -697.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-25 00:21:34,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1002.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 350.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5378.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.8 MB). Peak memory consumption was 252.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226243.22 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -697.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1584]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1584). Cancelled while BasicCegarLoop was constructing difference of abstraction (36562states) and FLOYD_HOARE automaton (currently 40 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (91956 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 226.1s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 185.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2862 SDtfs, 13902 SDslu, 4208 SDs, 0 SdLazy, 29548 SolverSat, 4068 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2962 GetRequests, 2803 SyntacticMatches, 8 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36562occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.4s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.9988488535441477 AbsIntWeakeningRatio, 0.2916666666666667 AbsIntAvgWeakeningVarsNumRemoved, 29.79824561403509 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 3334 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3590 NumberOfCodeBlocks, 3590 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4735 ConstructedInterpolants, 0 QuantifiedInterpolants, 2522152 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 2304/2536 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown