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/Problem15_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:08:07,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:08:07,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:08:07,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:08:07,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:08:07,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:08:07,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:08:07,369 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:08:07,370 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:08:07,371 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:08:07,372 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:08:07,372 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:08:07,373 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:08:07,374 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:08:07,375 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:08:07,376 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:08:07,377 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:08:07,379 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:08:07,381 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:08:07,382 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:08:07,383 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:08:07,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:08:07,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:08:07,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:08:07,388 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:08:07,389 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:08:07,390 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:08:07,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:08:07,391 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:08:07,392 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:08:07,393 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:08:07,393 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:08:07,394 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:08:07,394 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:08:07,395 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:08:07,396 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:08:07,396 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:08:07,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:08:07,423 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:08:07,426 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:08:07,426 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:08:07,426 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:08:07,427 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:08:07,427 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:08:07,427 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:08:07,427 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:08:07,428 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:08:07,428 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:08:07,428 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:08:07,428 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:08:07,429 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:08:07,429 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:08:07,429 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:08:07,430 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:08:07,431 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:08:07,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:08:07,431 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:08:07,431 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:08:07,432 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:08:07,432 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:08:07,432 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:08:07,433 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:08:07,433 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:08:07,433 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:08:07,434 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:08:07,434 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:08:07,434 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:08:07,434 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:08:07,435 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:08:07,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:08:07,435 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:08:07,436 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:08:07,436 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:08:07,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:08:07,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:08:07,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:08:07,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:08:07,525 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:08:07,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-10-27 08:08:07,592 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ea4b909f/e19255edf7394f9897cd6c72cca76ffd/FLAG3c0acff47 [2018-10-27 08:08:08,355 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:08:08,356 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label04_true-unreach-call.c [2018-10-27 08:08:08,377 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ea4b909f/e19255edf7394f9897cd6c72cca76ffd/FLAG3c0acff47 [2018-10-27 08:08:08,393 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ea4b909f/e19255edf7394f9897cd6c72cca76ffd [2018-10-27 08:08:08,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:08:08,406 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:08:08,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:08:08,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:08:08,416 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:08:08,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:08:08" (1/1) ... [2018-10-27 08:08:08,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:08, skipping insertion in model container [2018-10-27 08:08:08,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:08:08" (1/1) ... [2018-10-27 08:08:08,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:08:08,516 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:08:09,392 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:08:09,397 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:08:09,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:08:09,729 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:08:09,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09 WrapperNode [2018-10-27 08:08:09,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:08:09,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:08:09,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:08:09,731 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:08:09,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:09,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:08:10,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:08:10,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:08:10,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:08:10,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... [2018-10-27 08:08:10,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:08:10,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:08:10,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:08:10,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:08:10,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:08:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:08:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:08:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:08:10,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:08:10,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:08:10,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:08:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:08:10,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:08:10,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:08:10,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:08:16,898 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:08:16,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:08:16 BoogieIcfgContainer [2018-10-27 08:08:16,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:08:16,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:08:16,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:08:16,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:08:16,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:08:08" (1/3) ... [2018-10-27 08:08:16,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:08:16, skipping insertion in model container [2018-10-27 08:08:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:08:09" (2/3) ... [2018-10-27 08:08:16,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:08:16, skipping insertion in model container [2018-10-27 08:08:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:08:16" (3/3) ... [2018-10-27 08:08:16,913 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label04_true-unreach-call.c [2018-10-27 08:08:16,924 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:08:16,938 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:08:16,959 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:08:17,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:08:17,013 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:08:17,013 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:08:17,014 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:08:17,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:08:17,014 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:08:17,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:08:17,015 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:08:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:08:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-27 08:08:17,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:08:17,057 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] [2018-10-27 08:08:17,059 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:08:17,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:08:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1812068772, now seen corresponding path program 1 times [2018-10-27 08:08:17,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:08:17,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:17,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:08:17,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:17,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:08:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:08:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:08:17,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:08:17,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:08:17,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:08:17,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:08:17,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:08:17,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:08:17,587 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:08:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:08:25,881 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-27 08:08:25,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:08:25,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-27 08:08:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:08:25,910 INFO L225 Difference]: With dead ends: 1514 [2018-10-27 08:08:25,911 INFO L226 Difference]: Without dead ends: 1070 [2018-10-27 08:08:25,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:08:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-27 08:08:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-27 08:08:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 08:08:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-27 08:08:26,042 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 38 [2018-10-27 08:08:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:08:26,045 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-27 08:08:26,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:08:26,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-27 08:08:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-27 08:08:26,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:08:26,054 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:08:26,054 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:08:26,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:08:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1548201903, now seen corresponding path program 1 times [2018-10-27 08:08:26,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:08:26,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:26,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:08:26,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:26,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:08:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:08:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:08:26,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:08:26,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:08:26,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:08:26,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:08:26,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:08:26,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:08:26,343 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-10-27 08:08:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:08:32,185 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-10-27 08:08:32,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:08:32,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-27 08:08:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:08:32,216 INFO L225 Difference]: With dead ends: 3988 [2018-10-27 08:08:32,217 INFO L226 Difference]: Without dead ends: 2926 [2018-10-27 08:08:32,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:08:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-10-27 08:08:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-10-27 08:08:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-10-27 08:08:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-10-27 08:08:32,355 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 108 [2018-10-27 08:08:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:08:32,357 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-10-27 08:08:32,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:08:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-10-27 08:08:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-27 08:08:32,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:08:32,385 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:08:32,386 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:08:32,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:08:32,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1266247063, now seen corresponding path program 1 times [2018-10-27 08:08:32,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:08:32,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:32,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:08:32,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:08:32,389 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:08:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:08:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-27 08:08:33,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:08:33,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:08:33,112 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-27 08:08:33,115 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:08:33,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:08:33,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:08:34,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:08:34,573 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:08:34,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:08:34,621 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:08:35,365 INFO L227 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 83.65% of their original sizes. [2018-10-27 08:08:35,366 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:08:35,969 INFO L415 sIntCurrentIteration]: We unified 313 AI predicates to 313 [2018-10-27 08:08:35,970 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:08:35,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:08:35,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:08:35,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:08:35,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:08:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:08:35,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:08:35,976 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 9 states. [2018-10-27 08:09:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:09:21,572 INFO L93 Difference]: Finished difference Result 6162 states and 8750 transitions. [2018-10-27 08:09:21,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:09:21,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-10-27 08:09:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:09:21,592 INFO L225 Difference]: With dead ends: 6162 [2018-10-27 08:09:21,593 INFO L226 Difference]: Without dead ends: 3555 [2018-10-27 08:09:21,604 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 319 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:09:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2018-10-27 08:09:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3552. [2018-10-27 08:09:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2018-10-27 08:09:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4831 transitions. [2018-10-27 08:09:21,698 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4831 transitions. Word has length 314 [2018-10-27 08:09:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:09:21,699 INFO L481 AbstractCegarLoop]: Abstraction has 3552 states and 4831 transitions. [2018-10-27 08:09:21,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:09:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4831 transitions. [2018-10-27 08:09:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-27 08:09:21,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:09:21,712 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:09:21,712 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:09:21,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:21,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2097836364, now seen corresponding path program 1 times [2018-10-27 08:09:21,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:09:21,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:21,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:21,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:21,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:09:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:09:22,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:22,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:09:22,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-10-27 08:09:22,481 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:09:22,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:09:22,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:09:23,485 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:09:23,486 INFO L272 AbstractInterpreter]: Visited 284 different actions 1126 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:09:23,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:23,526 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:09:23,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:23,526 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:09:23,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:23,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:09:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:23,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:09:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:09:24,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:09:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:09:24,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:09:24,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:09:24,669 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:09:24,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:09:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:09:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:09:24,671 INFO L87 Difference]: Start difference. First operand 3552 states and 4831 transitions. Second operand 9 states. [2018-10-27 08:09:40,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:09:40,415 INFO L93 Difference]: Finished difference Result 8183 states and 12318 transitions. [2018-10-27 08:09:40,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 08:09:40,422 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2018-10-27 08:09:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:09:40,465 INFO L225 Difference]: With dead ends: 8183 [2018-10-27 08:09:40,465 INFO L226 Difference]: Without dead ends: 5576 [2018-10-27 08:09:40,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 829 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:09:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2018-10-27 08:09:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5562. [2018-10-27 08:09:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2018-10-27 08:09:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7274 transitions. [2018-10-27 08:09:40,679 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7274 transitions. Word has length 413 [2018-10-27 08:09:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:09:40,680 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7274 transitions. [2018-10-27 08:09:40,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:09:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7274 transitions. [2018-10-27 08:09:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-10-27 08:09:40,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:09:40,698 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:09:40,698 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:09:40,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash -852894676, now seen corresponding path program 1 times [2018-10-27 08:09:40,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:09:40,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:40,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:40,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:40,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:09:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:09:41,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:41,400 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:09:41,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 436 with the following transitions: [2018-10-27 08:09:41,401 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:09:41,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:09:41,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:09:43,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:09:43,018 INFO L272 AbstractInterpreter]: Visited 211 different actions 1044 times. Merged at 8 different actions 36 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:09:43,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:43,058 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:09:43,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:43,058 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:09:43,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:43,070 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:09:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:43,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:09:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:09:43,445 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:09:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:09:43,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:09:43,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:09:43,892 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:09:43,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:09:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:09:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:09:43,895 INFO L87 Difference]: Start difference. First operand 5562 states and 7274 transitions. Second operand 9 states. [2018-10-27 08:09:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:09:54,492 INFO L93 Difference]: Finished difference Result 12221 states and 18382 transitions. [2018-10-27 08:09:54,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:09:54,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 435 [2018-10-27 08:09:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:09:54,558 INFO L225 Difference]: With dead ends: 12221 [2018-10-27 08:09:54,559 INFO L226 Difference]: Without dead ends: 7606 [2018-10-27 08:09:54,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 876 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-27 08:09:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2018-10-27 08:09:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7573. [2018-10-27 08:09:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7573 states. [2018-10-27 08:09:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10142 transitions. [2018-10-27 08:09:54,923 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10142 transitions. Word has length 435 [2018-10-27 08:09:54,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:09:54,924 INFO L481 AbstractCegarLoop]: Abstraction has 7573 states and 10142 transitions. [2018-10-27 08:09:54,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:09:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10142 transitions. [2018-10-27 08:09:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-10-27 08:09:54,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:09:54,940 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:09:54,940 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:09:54,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:54,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1706951362, now seen corresponding path program 1 times [2018-10-27 08:09:54,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:09:54,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:54,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:54,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:09:54,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:09:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:09:55,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:55,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:09:55,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 465 with the following transitions: [2018-10-27 08:09:55,692 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:09:55,697 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:09:55,698 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:09:56,349 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:09:56,349 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:09:56,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:09:56,356 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:09:56,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:09:56,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:09:56,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:09:56,366 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:09:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:09:56,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:09:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-10-27 08:09:57,068 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:09:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-10-27 08:09:58,242 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:09:58,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2018-10-27 08:09:58,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:09:58,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:09:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:09:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:09:58,246 INFO L87 Difference]: Start difference. First operand 7573 states and 10142 transitions. Second operand 5 states. [2018-10-27 08:10:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:04,154 INFO L93 Difference]: Finished difference Result 20274 states and 30300 transitions. [2018-10-27 08:10:04,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:10:04,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2018-10-27 08:10:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:04,289 INFO L225 Difference]: With dead ends: 20274 [2018-10-27 08:10:04,289 INFO L226 Difference]: Without dead ends: 13648 [2018-10-27 08:10:04,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 921 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-10-27 08:10:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2018-10-27 08:10:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 13464. [2018-10-27 08:10:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13464 states. [2018-10-27 08:10:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 18185 transitions. [2018-10-27 08:10:04,889 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 18185 transitions. Word has length 464 [2018-10-27 08:10:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:04,892 INFO L481 AbstractCegarLoop]: Abstraction has 13464 states and 18185 transitions. [2018-10-27 08:10:04,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:10:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 18185 transitions. [2018-10-27 08:10:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-27 08:10:04,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:04,914 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:04,914 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:04,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash -676226944, now seen corresponding path program 1 times [2018-10-27 08:10:04,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:04,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:04,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:04,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:04,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-27 08:10:05,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:10:05,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:10:05,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:05,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:10:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:10:05,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:10:05,528 INFO L87 Difference]: Start difference. First operand 13464 states and 18185 transitions. Second operand 3 states. [2018-10-27 08:10:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:08,955 INFO L93 Difference]: Finished difference Result 29498 states and 43099 transitions. [2018-10-27 08:10:08,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:10:08,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 554 [2018-10-27 08:10:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:09,057 INFO L225 Difference]: With dead ends: 29498 [2018-10-27 08:10:09,058 INFO L226 Difference]: Without dead ends: 16981 [2018-10-27 08:10:09,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:10:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16981 states. [2018-10-27 08:10:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16981 to 16979. [2018-10-27 08:10:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16979 states. [2018-10-27 08:10:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16979 states to 16979 states and 23682 transitions. [2018-10-27 08:10:09,724 INFO L78 Accepts]: Start accepts. Automaton has 16979 states and 23682 transitions. Word has length 554 [2018-10-27 08:10:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:09,725 INFO L481 AbstractCegarLoop]: Abstraction has 16979 states and 23682 transitions. [2018-10-27 08:10:09,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:10:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 16979 states and 23682 transitions. [2018-10-27 08:10:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-10-27 08:10:09,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:09,767 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:09,767 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:09,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:09,768 INFO L82 PathProgramCache]: Analyzing trace with hash 421827042, now seen corresponding path program 1 times [2018-10-27 08:10:09,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:09,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:09,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:09,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:09,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:10,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:10,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:10,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 644 with the following transitions: [2018-10-27 08:10:10,785 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:10,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:10,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:12,250 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:10:12,250 INFO L272 AbstractInterpreter]: Visited 215 different actions 1279 times. Merged at 10 different actions 53 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:10:12,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:12,256 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:10:12,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:12,256 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:10:12,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:12,265 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:10:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:12,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:10:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:12,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:10:13,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:13,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:10:13,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-27 08:10:13,114 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:10:13,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:10:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:10:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:10:13,116 INFO L87 Difference]: Start difference. First operand 16979 states and 23682 transitions. Second operand 7 states. [2018-10-27 08:10:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:25,735 INFO L93 Difference]: Finished difference Result 44810 states and 65762 transitions. [2018-10-27 08:10:25,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:10:25,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2018-10-27 08:10:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:25,910 INFO L225 Difference]: With dead ends: 44810 [2018-10-27 08:10:25,910 INFO L226 Difference]: Without dead ends: 28145 [2018-10-27 08:10:26,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1301 GetRequests, 1287 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-27 08:10:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28145 states. [2018-10-27 08:10:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28145 to 28039. [2018-10-27 08:10:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28039 states. [2018-10-27 08:10:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28039 states to 28039 states and 37726 transitions. [2018-10-27 08:10:26,928 INFO L78 Accepts]: Start accepts. Automaton has 28039 states and 37726 transitions. Word has length 643 [2018-10-27 08:10:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:26,930 INFO L481 AbstractCegarLoop]: Abstraction has 28039 states and 37726 transitions. [2018-10-27 08:10:26,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:10:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 28039 states and 37726 transitions. [2018-10-27 08:10:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-10-27 08:10:26,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:26,991 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:26,991 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:26,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:26,992 INFO L82 PathProgramCache]: Analyzing trace with hash -342694527, now seen corresponding path program 1 times [2018-10-27 08:10:26,992 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:26,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:26,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:26,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:26,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-10-27 08:10:27,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:27,572 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:27,572 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 656 with the following transitions: [2018-10-27 08:10:27,573 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:27,578 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:27,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:32,569 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:10:32,569 INFO L272 AbstractInterpreter]: Visited 288 different actions 856 times. Merged at 9 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 08:10:32,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:32,577 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:10:32,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:32,577 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:10:32,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:32,586 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:10:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:32,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:10:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-10-27 08:10:33,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:10:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-10-27 08:10:33,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:10:33,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-27 08:10:33,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:10:33,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:10:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:10:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:33,511 INFO L87 Difference]: Start difference. First operand 28039 states and 37726 transitions. Second operand 3 states. [2018-10-27 08:10:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:36,207 INFO L93 Difference]: Finished difference Result 54570 states and 73967 transitions. [2018-10-27 08:10:36,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:10:36,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 655 [2018-10-27 08:10:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:36,356 INFO L225 Difference]: With dead ends: 54570 [2018-10-27 08:10:36,357 INFO L226 Difference]: Without dead ends: 28353 [2018-10-27 08:10:36,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1312 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:10:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28353 states. [2018-10-27 08:10:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28353 to 28035. [2018-10-27 08:10:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28035 states. [2018-10-27 08:10:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28035 states to 28035 states and 37678 transitions. [2018-10-27 08:10:37,200 INFO L78 Accepts]: Start accepts. Automaton has 28035 states and 37678 transitions. Word has length 655 [2018-10-27 08:10:37,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:37,202 INFO L481 AbstractCegarLoop]: Abstraction has 28035 states and 37678 transitions. [2018-10-27 08:10:37,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:10:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28035 states and 37678 transitions. [2018-10-27 08:10:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-10-27 08:10:37,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:37,261 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:37,261 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:37,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:37,262 INFO L82 PathProgramCache]: Analyzing trace with hash 375047493, now seen corresponding path program 1 times [2018-10-27 08:10:37,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:37,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:37,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:37,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:37,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-27 08:10:38,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:38,300 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:38,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 687 with the following transitions: [2018-10-27 08:10:38,301 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:38,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:38,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:39,344 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:10:39,344 INFO L272 AbstractInterpreter]: Visited 213 different actions 1054 times. Merged at 10 different actions 36 times. Never widened. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:10:39,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:39,349 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:10:39,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:39,349 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:10:39,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:39,359 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:10:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:39,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:10:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-27 08:10:40,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:10:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 541 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-10-27 08:10:40,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:10:40,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:10:40,493 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:10:40,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:10:40,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:10:40,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:10:40,495 INFO L87 Difference]: Start difference. First operand 28035 states and 37678 transitions. Second operand 9 states. [2018-10-27 08:10:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:10:48,664 INFO L93 Difference]: Finished difference Result 57757 states and 81218 transitions. [2018-10-27 08:10:48,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:10:48,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 686 [2018-10-27 08:10:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:10:48,811 INFO L225 Difference]: With dead ends: 57757 [2018-10-27 08:10:48,811 INFO L226 Difference]: Without dead ends: 31544 [2018-10-27 08:10:48,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1391 GetRequests, 1374 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-10-27 08:10:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31544 states. [2018-10-27 08:10:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31544 to 31513. [2018-10-27 08:10:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31513 states. [2018-10-27 08:10:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31513 states to 31513 states and 41920 transitions. [2018-10-27 08:10:49,741 INFO L78 Accepts]: Start accepts. Automaton has 31513 states and 41920 transitions. Word has length 686 [2018-10-27 08:10:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:10:49,742 INFO L481 AbstractCegarLoop]: Abstraction has 31513 states and 41920 transitions. [2018-10-27 08:10:49,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:10:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 31513 states and 41920 transitions. [2018-10-27 08:10:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2018-10-27 08:10:49,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:10:49,776 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:10:49,776 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:10:49,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1457410845, now seen corresponding path program 1 times [2018-10-27 08:10:49,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:10:49,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:49,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:49,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:10:49,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:10:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 617 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:50,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:50,462 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:10:50,462 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 697 with the following transitions: [2018-10-27 08:10:50,463 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [986], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:10:50,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:10:50,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:10:51,937 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:10:51,938 INFO L272 AbstractInterpreter]: Visited 215 different actions 1275 times. Merged at 10 different actions 49 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 08:10:51,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:10:51,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:10:51,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:10:51,977 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:10:51,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:10:51,988 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:10:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:10:52,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:10:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 617 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:52,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:10:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 617 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:10:53,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:10:53,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:10:53,545 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:10:53,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:10:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:10:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:10:53,547 INFO L87 Difference]: Start difference. First operand 31513 states and 41920 transitions. Second operand 9 states. [2018-10-27 08:11:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:01,889 INFO L93 Difference]: Finished difference Result 57839 states and 74838 transitions. [2018-10-27 08:11:01,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 08:11:01,890 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 696 [2018-10-27 08:11:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:01,957 INFO L225 Difference]: With dead ends: 57839 [2018-10-27 08:11:01,957 INFO L226 Difference]: Without dead ends: 28148 [2018-10-27 08:11:02,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1395 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:11:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28148 states. [2018-10-27 08:11:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28148 to 26841. [2018-10-27 08:11:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26841 states. [2018-10-27 08:11:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26841 states to 26841 states and 29599 transitions. [2018-10-27 08:11:02,471 INFO L78 Accepts]: Start accepts. Automaton has 26841 states and 29599 transitions. Word has length 696 [2018-10-27 08:11:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:02,473 INFO L481 AbstractCegarLoop]: Abstraction has 26841 states and 29599 transitions. [2018-10-27 08:11:02,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:11:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26841 states and 29599 transitions. [2018-10-27 08:11:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2018-10-27 08:11:02,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:02,498 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:11:02,498 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:02,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:02,499 INFO L82 PathProgramCache]: Analyzing trace with hash -680648661, now seen corresponding path program 1 times [2018-10-27 08:11:02,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:02,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:02,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:02,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:02,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2018-10-27 08:11:03,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:03,219 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:11:03,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 699 with the following transitions: [2018-10-27 08:11:03,220 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [888], [893], [895], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:11:03,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:11:03,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:11:04,349 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:11:04,350 INFO L272 AbstractInterpreter]: Visited 217 different actions 1279 times. Merged at 10 different actions 49 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 08:11:04,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:04,357 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:11:04,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:04,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:11:04,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:04,366 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:11:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:04,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:11:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 880 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-27 08:11:05,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:11:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 528 proven. 100 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-10-27 08:11:05,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:11:05,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2018-10-27 08:11:05,875 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:11:05,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:11:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:11:05,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:11:05,877 INFO L87 Difference]: Start difference. First operand 26841 states and 29599 transitions. Second operand 9 states. [2018-10-27 08:11:31,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:31,789 INFO L93 Difference]: Finished difference Result 88970 states and 99945 transitions. [2018-10-27 08:11:31,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-27 08:11:31,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 698 [2018-10-27 08:11:31,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:31,894 INFO L225 Difference]: With dead ends: 88970 [2018-10-27 08:11:31,894 INFO L226 Difference]: Without dead ends: 54009 [2018-10-27 08:11:31,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1424 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=420, Invalid=1742, Unknown=0, NotChecked=0, Total=2162 [2018-10-27 08:11:31,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54009 states. [2018-10-27 08:11:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54009 to 46650. [2018-10-27 08:11:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46650 states. [2018-10-27 08:11:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46650 states to 46650 states and 49986 transitions. [2018-10-27 08:11:32,603 INFO L78 Accepts]: Start accepts. Automaton has 46650 states and 49986 transitions. Word has length 698 [2018-10-27 08:11:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:32,603 INFO L481 AbstractCegarLoop]: Abstraction has 46650 states and 49986 transitions. [2018-10-27 08:11:32,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:11:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 46650 states and 49986 transitions. [2018-10-27 08:11:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-10-27 08:11:32,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:32,635 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:11:32,635 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:32,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1441058242, now seen corresponding path program 1 times [2018-10-27 08:11:32,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:32,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:32,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:32,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:32,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-27 08:11:33,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:33,410 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:11:33,411 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 728 with the following transitions: [2018-10-27 08:11:33,411 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1083], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:11:33,416 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:11:33,416 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:11:37,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:11:37,760 INFO L272 AbstractInterpreter]: Visited 288 different actions 856 times. Merged at 9 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 08:11:37,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:37,795 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:11:37,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:37,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:11:37,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:37,808 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:11:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:38,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:11:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-27 08:11:38,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:11:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 540 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-10-27 08:11:38,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:11:38,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-10-27 08:11:38,801 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:11:38,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:11:38,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:11:38,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:11:38,804 INFO L87 Difference]: Start difference. First operand 46650 states and 49986 transitions. Second operand 7 states. [2018-10-27 08:11:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:48,330 INFO L93 Difference]: Finished difference Result 98404 states and 105480 transitions. [2018-10-27 08:11:48,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:11:48,331 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 727 [2018-10-27 08:11:48,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:48,429 INFO L225 Difference]: With dead ends: 98404 [2018-10-27 08:11:48,429 INFO L226 Difference]: Without dead ends: 56471 [2018-10-27 08:11:48,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1456 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-10-27 08:11:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56471 states. [2018-10-27 08:11:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56471 to 51585. [2018-10-27 08:11:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51585 states. [2018-10-27 08:11:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51585 states to 51585 states and 55227 transitions. [2018-10-27 08:11:49,225 INFO L78 Accepts]: Start accepts. Automaton has 51585 states and 55227 transitions. Word has length 727 [2018-10-27 08:11:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:49,226 INFO L481 AbstractCegarLoop]: Abstraction has 51585 states and 55227 transitions. [2018-10-27 08:11:49,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:11:49,227 INFO L276 IsEmpty]: Start isEmpty. Operand 51585 states and 55227 transitions. [2018-10-27 08:11:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2018-10-27 08:11:49,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:49,258 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:11:49,258 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:49,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:49,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1586564222, now seen corresponding path program 1 times [2018-10-27 08:11:49,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:49,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:49,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:49,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:49,260 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-27 08:11:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 137 proven. 637 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-27 08:11:51,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:51,539 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:11:51,539 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 741 with the following transitions: [2018-10-27 08:11:51,540 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [978], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:11:51,544 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:11:51,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:11:51,545 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:11:51,546 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:11:51,546 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:11:51,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:51,546 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:11:51,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:51,557 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:11:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:51,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:11:51,793 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:11:51,994 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:11:51,995 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:11:52,003 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:11:52,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:11:52 BoogieIcfgContainer [2018-10-27 08:11:52,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:11:52,005 INFO L168 Benchmark]: Toolchain (without parser) took 223599.40 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 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 843.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,007 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:11:52,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1321.15 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 440.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,009 INFO L168 Benchmark]: Boogie Preprocessor took 283.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,010 INFO L168 Benchmark]: RCFGBuilder took 6443.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.8 MB). Peak memory consumption was 318.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,014 INFO L168 Benchmark]: TraceAbstraction took 215102.77 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 536.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:11:52,020 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1321.15 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 440.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 283.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6443.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.8 MB). Peak memory consumption was 318.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215102.77 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 3.0 GB in the end (delta: -1.2 GB). Peak memory consumption was 536.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was analyzing trace of length 741 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 214.9s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 164.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3202 SDtfs, 24227 SDslu, 3906 SDs, 0 SdLazy, 44303 SolverSat, 9271 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 130.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 11379 GetRequests, 11188 SyntacticMatches, 16 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51585occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.4s AbstIntTime, 11 AbstIntIterations, 1 AbstIntStrong, 0.9963753008120411 AbsIntWeakeningRatio, 0.10223642172523961 AbsIntAvgWeakeningVarsNumRemoved, 14.60702875399361 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 14558 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 11848 NumberOfCodeBlocks, 11848 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 17234 ConstructedInterpolants, 0 QuantifiedInterpolants, 21867328 SizeOfPredicates, 7 NumberOfNonLiveVariables, 7736 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 22173/22556 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown