java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:04:49,455 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:04:49,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:04:49,474 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:04:49,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:04:49,476 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:04:49,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:04:49,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:04:49,481 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:04:49,481 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:04:49,482 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:04:49,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:04:49,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:04:49,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:04:49,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:04:49,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:04:49,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:04:49,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:04:49,492 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:04:49,494 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:04:49,495 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:04:49,496 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:04:49,499 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:04:49,499 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:04:49,499 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:04:49,500 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:04:49,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:04:49,502 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:04:49,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:04:49,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:04:49,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:04:49,505 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:04:49,505 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:04:49,506 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:04:49,507 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:04:49,508 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:04:49,508 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:04:49,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:04:49,530 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:04:49,532 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:04:49,532 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:04:49,532 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:04:49,532 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:04:49,532 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:04:49,533 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:04:49,534 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:04:49,535 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:04:49,535 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:04:49,535 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:04:49,535 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:04:49,535 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:04:49,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:04:49,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:04:49,536 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:04:49,536 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:04:49,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:04:49,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:04:49,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:04:49,538 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:04:49,538 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:04:49,538 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:04:49,538 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:04:49,539 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:04:49,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:04:49,539 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:04:49,540 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:04:49,540 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:04:49,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:04:49,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:04:49,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:04:49,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:04:49,619 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:04:49,619 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 18:04:49,682 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd3ace9f/a5d409a31f3046f699f3755619a2747d/FLAG65c53b0eb [2018-11-07 18:04:50,298 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:04:50,302 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 18:04:50,329 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd3ace9f/a5d409a31f3046f699f3755619a2747d/FLAG65c53b0eb [2018-11-07 18:04:50,351 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd3ace9f/a5d409a31f3046f699f3755619a2747d [2018-11-07 18:04:50,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:04:50,366 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:04:50,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:04:50,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:04:50,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:04:50,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:04:50" (1/1) ... [2018-11-07 18:04:50,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:50, skipping insertion in model container [2018-11-07 18:04:50,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:04:50" (1/1) ... [2018-11-07 18:04:50,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:04:50,480 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:04:51,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:04:51,084 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:04:51,255 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:04:51,275 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:04:51,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51 WrapperNode [2018-11-07 18:04:51,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:04:51,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:04:51,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:04:51,278 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:04:51,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:04:51,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:04:51,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:04:51,431 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:04:51,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... [2018-11-07 18:04:51,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:04:51,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:04:51,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:04:51,529 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:04:51,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:04:51,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:04:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:04:51,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:04:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:04:51,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:04:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:04:51,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:04:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:04:51,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:04:55,375 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:04:55,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:04:55 BoogieIcfgContainer [2018-11-07 18:04:55,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:04:55,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:04:55,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:04:55,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:04:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:04:50" (1/3) ... [2018-11-07 18:04:55,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:04:55, skipping insertion in model container [2018-11-07 18:04:55,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:04:51" (2/3) ... [2018-11-07 18:04:55,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f47c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:04:55, skipping insertion in model container [2018-11-07 18:04:55,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:04:55" (3/3) ... [2018-11-07 18:04:55,386 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 18:04:55,395 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:04:55,403 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:04:55,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:04:55,459 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:04:55,459 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:04:55,460 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:04:55,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:04:55,460 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:04:55,460 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:04:55,460 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:04:55,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:04:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 18:04:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 18:04:55,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:04:55,498 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] [2018-11-07 18:04:55,501 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:04:55,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:04:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-11-07 18:04:55,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:04:55,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:04:55,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:04:55,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:04:55,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:04:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:04:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:04:55,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:04:55,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:04:55,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:04:55,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:04:55,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:04:55,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:04:55,990 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 18:04:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:04:58,864 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 18:04:58,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:04:58,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 18:04:58,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:04:58,889 INFO L225 Difference]: With dead ends: 894 [2018-11-07 18:04:58,889 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 18:04:58,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:04:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 18:04:58,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 18:04:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 18:04:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 18:04:59,008 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-11-07 18:04:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:04:59,008 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 18:04:59,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:04:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 18:04:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 18:04:59,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:04:59,017 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:04:59,018 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:04:59,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:04:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-11-07 18:04:59,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:04:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:04:59,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:04:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:04:59,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:04:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:04:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:04:59,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:04:59,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:04:59,358 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:04:59,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:04:59,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:04:59,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:04:59,361 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 18:05:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:02,658 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-11-07 18:05:02,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:02,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 18:05:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:02,679 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 18:05:02,680 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 18:05:02,686 INFO L604 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 [2018-11-07 18:05:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 18:05:02,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 18:05:02,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 18:05:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-07 18:05:02,792 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-11-07 18:05:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:02,793 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-07 18:05:02,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-07 18:05:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 18:05:02,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:02,806 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:05:02,808 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:02,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-11-07 18:05:02,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:02,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:02,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:02,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:02,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:05:03,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:03,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:05:03,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:03,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:05:03,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:05:03,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:03,147 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-11-07 18:05:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:06,387 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-11-07 18:05:06,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:06,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-07 18:05:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:06,430 INFO L225 Difference]: With dead ends: 6200 [2018-11-07 18:05:06,430 INFO L226 Difference]: Without dead ends: 4475 [2018-11-07 18:05:06,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-11-07 18:05:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-11-07 18:05:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-11-07 18:05:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-11-07 18:05:06,616 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-11-07 18:05:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:06,617 INFO L480 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-11-07 18:05:06,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-11-07 18:05:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 18:05:06,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:06,632 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:05:06,632 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:06,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-11-07 18:05:06,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:06,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:06,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:06,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:06,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:07,048 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:05:07,261 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-07 18:05:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:05:07,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:07,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:07,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 18:05:07,926 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:05:07,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:07,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:08,543 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:08,790 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:08,791 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:05:08,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:08,829 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:09,594 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 18:05:09,594 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:05:09,944 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 18:05:09,944 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:05:09,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:05:09,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-07 18:05:09,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:09,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:05:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:05:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:05:09,947 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 7 states. [2018-11-07 18:05:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:18,860 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-11-07 18:05:18,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:05:18,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-11-07 18:05:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:18,889 INFO L225 Difference]: With dead ends: 8763 [2018-11-07 18:05:18,890 INFO L226 Difference]: Without dead ends: 4477 [2018-11-07 18:05:18,915 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:05:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-11-07 18:05:19,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-11-07 18:05:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-11-07 18:05:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-11-07 18:05:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-11-07 18:05:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:19,047 INFO L480 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-11-07 18:05:19,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:05:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-11-07 18:05:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-07 18:05:19,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:19,061 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:05:19,062 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:19,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-11-07 18:05:19,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:19,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:19,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:19,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:19,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:19,581 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:05:19,773 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 18:05:19,994 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:05:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:05:20,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:20,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:20,749 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-07 18:05:20,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:05:20,759 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:20,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:21,071 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:21,072 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:05:21,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:21,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:21,692 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 18:05:21,693 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:05:22,939 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-11-07 18:05:22,940 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:05:22,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:05:22,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 18:05:22,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:22,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:05:22,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:05:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:05:22,942 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 25 states. [2018-11-07 18:05:30,733 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:46,768 INFO L93 Difference]: Finished difference Result 9477 states and 13843 transitions. [2018-11-07 18:05:46,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 18:05:46,769 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 324 [2018-11-07 18:05:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:46,794 INFO L225 Difference]: With dead ends: 9477 [2018-11-07 18:05:46,795 INFO L226 Difference]: Without dead ends: 5191 [2018-11-07 18:05:46,819 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 339 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 18:05:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2018-11-07 18:05:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5183. [2018-11-07 18:05:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5183 states. [2018-11-07 18:05:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7293 transitions. [2018-11-07 18:05:46,954 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7293 transitions. Word has length 324 [2018-11-07 18:05:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:46,954 INFO L480 AbstractCegarLoop]: Abstraction has 5183 states and 7293 transitions. [2018-11-07 18:05:46,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 18:05:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7293 transitions. [2018-11-07 18:05:46,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 18:05:46,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:46,978 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:05:46,979 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:46,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1429919366, now seen corresponding path program 1 times [2018-11-07 18:05:46,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:46,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:46,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:46,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:46,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:47,603 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:05:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 254 proven. 224 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 18:05:48,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:48,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:48,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 18:05:48,210 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:05:48,214 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:48,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:48,248 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:48,454 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:48,455 INFO L272 AbstractInterpreter]: Visited 141 different actions 276 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:05:48,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:48,492 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:49,486 INFO L227 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-07 18:05:49,487 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:05:49,964 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 18:05:49,965 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:05:49,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:05:49,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 33 [2018-11-07 18:05:49,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:05:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:05:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:05:49,967 INFO L87 Difference]: Start difference. First operand 5183 states and 7293 transitions. Second operand 21 states. [2018-11-07 18:06:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:06:06,173 INFO L93 Difference]: Finished difference Result 9842 states and 14071 transitions. [2018-11-07 18:06:06,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 18:06:06,173 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 424 [2018-11-07 18:06:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:06:06,199 INFO L225 Difference]: With dead ends: 9842 [2018-11-07 18:06:06,199 INFO L226 Difference]: Without dead ends: 5556 [2018-11-07 18:06:06,216 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:06:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2018-11-07 18:06:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5551. [2018-11-07 18:06:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5551 states. [2018-11-07 18:06:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7689 transitions. [2018-11-07 18:06:06,378 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7689 transitions. Word has length 424 [2018-11-07 18:06:06,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:06:06,379 INFO L480 AbstractCegarLoop]: Abstraction has 5551 states and 7689 transitions. [2018-11-07 18:06:06,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 18:06:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7689 transitions. [2018-11-07 18:06:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-11-07 18:06:06,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:06:06,406 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:06:06,406 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:06:06,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:06,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1815734301, now seen corresponding path program 1 times [2018-11-07 18:06:06,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:06:06,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:06,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:06,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:06,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:06:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 149 proven. 166 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-11-07 18:06:07,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:07,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:06:07,082 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 436 with the following transitions: [2018-11-07 18:06:07,083 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:06:07,086 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:06:07,086 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:06:07,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:06:07,642 INFO L272 AbstractInterpreter]: Visited 141 different actions 421 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:06:07,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:07,648 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:06:08,265 INFO L227 lantSequenceWeakener]: Weakened 105 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-07 18:06:08,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:06:08,876 INFO L415 sIntCurrentIteration]: We unified 434 AI predicates to 434 [2018-11-07 18:06:08,876 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:06:08,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:06:08,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-07 18:06:08,877 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:06:08,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:06:08,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:06:08,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:06:08,879 INFO L87 Difference]: Start difference. First operand 5551 states and 7689 transitions. Second operand 25 states. [2018-11-07 18:06:19,698 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:06:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:06:41,701 INFO L93 Difference]: Finished difference Result 11784 states and 16409 transitions. [2018-11-07 18:06:41,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-07 18:06:41,701 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 435 [2018-11-07 18:06:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:06:41,732 INFO L225 Difference]: With dead ends: 11784 [2018-11-07 18:06:41,733 INFO L226 Difference]: Without dead ends: 7498 [2018-11-07 18:06:41,744 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 461 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 18:06:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7498 states. [2018-11-07 18:06:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7498 to 6648. [2018-11-07 18:06:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6648 states. [2018-11-07 18:06:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6648 states to 6648 states and 8889 transitions. [2018-11-07 18:06:41,897 INFO L78 Accepts]: Start accepts. Automaton has 6648 states and 8889 transitions. Word has length 435 [2018-11-07 18:06:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:06:41,898 INFO L480 AbstractCegarLoop]: Abstraction has 6648 states and 8889 transitions. [2018-11-07 18:06:41,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 18:06:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6648 states and 8889 transitions. [2018-11-07 18:06:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-11-07 18:06:41,921 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:06:41,922 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:06:41,922 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:06:41,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash -676378677, now seen corresponding path program 1 times [2018-11-07 18:06:41,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:06:41,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:41,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:41,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:41,924 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:06:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-11-07 18:06:43,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:43,475 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:06:43,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-11-07 18:06:43,476 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:06:43,482 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:06:43,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:06:43,523 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:06:44,088 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:06:44,088 INFO L272 AbstractInterpreter]: Visited 123 different actions 615 times. Merged at 10 different actions 47 times. Widened at 1 different actions 1 times. Found 12 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:06:44,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:44,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:06:44,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:44,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:06:44,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:44,153 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:06:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:44,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:06:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 668 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-11-07 18:06:44,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:06:45,161 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 18:06:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-11-07 18:06:45,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:06:45,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 18:06:45,757 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:06:45,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:06:45,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:06:45,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:06:45,760 INFO L87 Difference]: Start difference. First operand 6648 states and 8889 transitions. Second operand 10 states. [2018-11-07 18:06:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:06:51,069 INFO L93 Difference]: Finished difference Result 16630 states and 24055 transitions. [2018-11-07 18:06:51,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:06:51,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 480 [2018-11-07 18:06:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:06:51,117 INFO L225 Difference]: With dead ends: 16630 [2018-11-07 18:06:51,118 INFO L226 Difference]: Without dead ends: 11249 [2018-11-07 18:06:51,158 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 972 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:06:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11249 states. [2018-11-07 18:06:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11249 to 10831. [2018-11-07 18:06:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10831 states. [2018-11-07 18:06:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10831 states to 10831 states and 14262 transitions. [2018-11-07 18:06:51,442 INFO L78 Accepts]: Start accepts. Automaton has 10831 states and 14262 transitions. Word has length 480 [2018-11-07 18:06:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:06:51,442 INFO L480 AbstractCegarLoop]: Abstraction has 10831 states and 14262 transitions. [2018-11-07 18:06:51,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:06:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 10831 states and 14262 transitions. [2018-11-07 18:06:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-11-07 18:06:51,478 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:06:51,479 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:06:51,479 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:06:51,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash -613228998, now seen corresponding path program 1 times [2018-11-07 18:06:51,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:06:51,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:51,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:51,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:51,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:06:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:52,993 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 18:06:53,266 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 18:06:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 389 proven. 409 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-07 18:06:54,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:54,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:06:54,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 534 with the following transitions: [2018-11-07 18:06:54,504 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:06:54,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:06:54,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:06:54,823 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:06:55,550 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:06:55,551 INFO L272 AbstractInterpreter]: Visited 143 different actions 712 times. Merged at 10 different actions 44 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:06:55,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:55,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:06:55,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:55,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:06:55,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:55,603 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:06:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:55,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:06:56,108 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 18:06:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 687 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-11-07 18:06:56,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:06:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 383 proven. 86 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-11-07 18:06:57,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:06:57,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 18:06:57,931 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:06:57,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:06:57,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:06:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:06:57,933 INFO L87 Difference]: Start difference. First operand 10831 states and 14262 transitions. Second operand 17 states. [2018-11-07 18:06:58,719 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 22 [2018-11-07 18:07:05,648 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 18:07:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:06,439 INFO L93 Difference]: Finished difference Result 21954 states and 31584 transitions. [2018-11-07 18:07:06,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:07:06,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 533 [2018-11-07 18:07:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:06,487 INFO L225 Difference]: With dead ends: 21954 [2018-11-07 18:07:06,488 INFO L226 Difference]: Without dead ends: 9461 [2018-11-07 18:07:06,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1077 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 18:07:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2018-11-07 18:07:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 8751. [2018-11-07 18:07:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8751 states. [2018-11-07 18:07:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8751 states to 8751 states and 10669 transitions. [2018-11-07 18:07:06,785 INFO L78 Accepts]: Start accepts. Automaton has 8751 states and 10669 transitions. Word has length 533 [2018-11-07 18:07:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:06,786 INFO L480 AbstractCegarLoop]: Abstraction has 8751 states and 10669 transitions. [2018-11-07 18:07:06,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:07:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 8751 states and 10669 transitions. [2018-11-07 18:07:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-07 18:07:06,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:06,797 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:07:06,797 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:06,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash -201219189, now seen corresponding path program 1 times [2018-11-07 18:07:06,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:06,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:06,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:06,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:06,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:08,086 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:07:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 427 proven. 513 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-11-07 18:07:09,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:09,367 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:09,368 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 673 with the following transitions: [2018-11-07 18:07:09,368 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:07:09,371 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:09,371 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:09,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:10,542 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:10,542 INFO L272 AbstractInterpreter]: Visited 192 different actions 964 times. Merged at 10 different actions 52 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:07:10,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:10,580 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:10,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:10,581 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:07:10,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:10,597 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:10,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:11,660 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-07 18:07:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-11-07 18:07:12,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 473 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 18:07:12,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:12,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-07 18:07:12,877 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:12,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:07:12,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:07:12,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:07:12,879 INFO L87 Difference]: Start difference. First operand 8751 states and 10669 transitions. Second operand 17 states. [2018-11-07 18:07:13,831 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2018-11-07 18:07:16,953 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 18:07:17,495 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-07 18:07:17,768 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-11-07 18:07:18,322 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 18:07:19,513 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-11-07 18:07:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:21,111 INFO L93 Difference]: Finished difference Result 20430 states and 25201 transitions. [2018-11-07 18:07:21,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-07 18:07:21,112 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 672 [2018-11-07 18:07:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:21,150 INFO L225 Difference]: With dead ends: 20430 [2018-11-07 18:07:21,150 INFO L226 Difference]: Without dead ends: 11872 [2018-11-07 18:07:21,176 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1416 GetRequests, 1366 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 18:07:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11872 states. [2018-11-07 18:07:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11872 to 11159. [2018-11-07 18:07:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11159 states. [2018-11-07 18:07:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11159 states to 11159 states and 13445 transitions. [2018-11-07 18:07:21,366 INFO L78 Accepts]: Start accepts. Automaton has 11159 states and 13445 transitions. Word has length 672 [2018-11-07 18:07:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:21,367 INFO L480 AbstractCegarLoop]: Abstraction has 11159 states and 13445 transitions. [2018-11-07 18:07:21,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:07:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11159 states and 13445 transitions. [2018-11-07 18:07:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-11-07 18:07:21,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:21,379 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2018-11-07 18:07:21,379 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:21,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1619755602, now seen corresponding path program 1 times [2018-11-07 18:07:21,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:21,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:21,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:21,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:21,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-11-07 18:07:22,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:22,036 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:22,036 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 705 with the following transitions: [2018-11-07 18:07:22,036 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:07:22,039 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:22,039 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:22,280 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:23,148 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:23,149 INFO L272 AbstractInterpreter]: Visited 193 different actions 978 times. Merged at 11 different actions 61 times. Widened at 1 different actions 1 times. Found 16 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:07:23,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:23,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:23,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:23,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:07:23,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:23,165 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:23,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 1043 proven. 2 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-11-07 18:07:23,659 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-11-07 18:07:24,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:24,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 18:07:24,332 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:24,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:07:24,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:07:24,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:07:24,333 INFO L87 Difference]: Start difference. First operand 11159 states and 13445 transitions. Second operand 7 states. [2018-11-07 18:07:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:26,205 INFO L93 Difference]: Finished difference Result 26378 states and 32709 transitions. [2018-11-07 18:07:26,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:07:26,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 704 [2018-11-07 18:07:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:26,252 INFO L225 Difference]: With dead ends: 26378 [2018-11-07 18:07:26,252 INFO L226 Difference]: Without dead ends: 15593 [2018-11-07 18:07:26,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1409 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:07:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15593 states. [2018-11-07 18:07:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15593 to 15024. [2018-11-07 18:07:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15024 states. [2018-11-07 18:07:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15024 states to 15024 states and 17773 transitions. [2018-11-07 18:07:26,533 INFO L78 Accepts]: Start accepts. Automaton has 15024 states and 17773 transitions. Word has length 704 [2018-11-07 18:07:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:26,534 INFO L480 AbstractCegarLoop]: Abstraction has 15024 states and 17773 transitions. [2018-11-07 18:07:26,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:07:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15024 states and 17773 transitions. [2018-11-07 18:07:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2018-11-07 18:07:26,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:26,553 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:07:26,553 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:26,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash -316914258, now seen corresponding path program 1 times [2018-11-07 18:07:26,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:26,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:26,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:26,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:26,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 485 proven. 1065 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-11-07 18:07:29,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:29,269 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:29,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 876 with the following transitions: [2018-11-07 18:07:29,270 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:07:29,273 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:29,273 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:29,609 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:30,727 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:30,728 INFO L272 AbstractInterpreter]: Visited 193 different actions 1167 times. Merged at 11 different actions 68 times. Widened at 1 different actions 2 times. Found 21 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 18:07:30,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:30,734 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:30,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:30,734 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 18:07:30,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:30,754 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:30,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 1555 proven. 2 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2018-11-07 18:07:32,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 479 proven. 335 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2018-11-07 18:07:33,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:33,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-11-07 18:07:33,795 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:33,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:07:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:07:33,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:07:33,798 INFO L87 Difference]: Start difference. First operand 15024 states and 17773 transitions. Second operand 18 states. [2018-11-07 18:07:35,470 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-11-07 18:07:36,345 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-11-07 18:07:36,869 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-11-07 18:07:37,057 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-11-07 18:07:40,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:40,224 INFO L93 Difference]: Finished difference Result 31248 states and 37268 transitions. [2018-11-07 18:07:40,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 18:07:40,225 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 875 [2018-11-07 18:07:40,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:40,263 INFO L225 Difference]: With dead ends: 31248 [2018-11-07 18:07:40,263 INFO L226 Difference]: Without dead ends: 16598 [2018-11-07 18:07:40,294 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1809 GetRequests, 1764 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070 [2018-11-07 18:07:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16598 states. [2018-11-07 18:07:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16598 to 15796. [2018-11-07 18:07:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15796 states. [2018-11-07 18:07:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15796 states to 15796 states and 18608 transitions. [2018-11-07 18:07:40,550 INFO L78 Accepts]: Start accepts. Automaton has 15796 states and 18608 transitions. Word has length 875 [2018-11-07 18:07:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:40,551 INFO L480 AbstractCegarLoop]: Abstraction has 15796 states and 18608 transitions. [2018-11-07 18:07:40,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:07:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 15796 states and 18608 transitions. [2018-11-07 18:07:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2018-11-07 18:07:40,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:40,575 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:07:40,575 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:40,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2016771542, now seen corresponding path program 1 times [2018-11-07 18:07:40,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:40,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:40,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:40,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:40,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 6 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2018-11-07 18:07:41,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:41,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:41,533 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 928 with the following transitions: [2018-11-07 18:07:41,534 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:07:41,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:41,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:41,720 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:42,573 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:42,573 INFO L272 AbstractInterpreter]: Visited 194 different actions 1173 times. Merged at 11 different actions 68 times. Widened at 1 different actions 2 times. Found 25 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 18:07:42,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:42,581 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:42,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:42,581 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 18:07:42,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:42,590 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:42,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 6 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2018-11-07 18:07:43,904 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 86 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2018-11-07 18:07:44,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:44,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-11-07 18:07:44,776 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:44,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:07:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:07:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 18:07:44,778 INFO L87 Difference]: Start difference. First operand 15796 states and 18608 transitions. Second operand 8 states. [2018-11-07 18:07:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:48,459 INFO L93 Difference]: Finished difference Result 34379 states and 40718 transitions. [2018-11-07 18:07:48,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 18:07:48,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 927 [2018-11-07 18:07:48,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:48,503 INFO L225 Difference]: With dead ends: 34379 [2018-11-07 18:07:48,504 INFO L226 Difference]: Without dead ends: 18774 [2018-11-07 18:07:48,533 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1875 GetRequests, 1855 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:07:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18774 states. [2018-11-07 18:07:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 17117. [2018-11-07 18:07:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17117 states. [2018-11-07 18:07:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17117 states to 17117 states and 20029 transitions. [2018-11-07 18:07:48,809 INFO L78 Accepts]: Start accepts. Automaton has 17117 states and 20029 transitions. Word has length 927 [2018-11-07 18:07:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:48,810 INFO L480 AbstractCegarLoop]: Abstraction has 17117 states and 20029 transitions. [2018-11-07 18:07:48,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:07:48,810 INFO L276 IsEmpty]: Start isEmpty. Operand 17117 states and 20029 transitions. [2018-11-07 18:07:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-11-07 18:07:48,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:48,833 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-11-07 18:07:48,834 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:48,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:48,834 INFO L82 PathProgramCache]: Analyzing trace with hash -926939718, now seen corresponding path program 1 times [2018-11-07 18:07:48,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:48,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:48,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:48,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:48,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 795 proven. 1576 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2018-11-07 18:07:52,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:52,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:52,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1059 with the following transitions: [2018-11-07 18:07:52,034 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:07:52,037 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:52,037 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:52,192 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:52,969 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:52,970 INFO L272 AbstractInterpreter]: Visited 195 different actions 1185 times. Merged at 12 different actions 74 times. Widened at 1 different actions 2 times. Found 28 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 18:07:52,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:52,978 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:52,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:52,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 18:07:52,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:52,989 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:53,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 1400 proven. 2 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2018-11-07 18:07:53,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 846 proven. 86 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2018-11-07 18:07:55,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:55,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 19 [2018-11-07 18:07:55,023 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:55,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:07:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:07:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:07:55,025 INFO L87 Difference]: Start difference. First operand 17117 states and 20029 transitions. Second operand 18 states. [2018-11-07 18:08:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:01,324 INFO L93 Difference]: Finished difference Result 33267 states and 39340 transitions. [2018-11-07 18:08:01,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-07 18:08:01,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1058 [2018-11-07 18:08:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:01,356 INFO L225 Difference]: With dead ends: 33267 [2018-11-07 18:08:01,356 INFO L226 Difference]: Without dead ends: 16341 [2018-11-07 18:08:01,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2211 GetRequests, 2150 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=642, Invalid=2780, Unknown=0, NotChecked=0, Total=3422 [2018-11-07 18:08:01,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16341 states. [2018-11-07 18:08:01,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16341 to 16035. [2018-11-07 18:08:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16035 states. [2018-11-07 18:08:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16035 states to 16035 states and 18078 transitions. [2018-11-07 18:08:01,618 INFO L78 Accepts]: Start accepts. Automaton has 16035 states and 18078 transitions. Word has length 1058 [2018-11-07 18:08:01,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:01,620 INFO L480 AbstractCegarLoop]: Abstraction has 16035 states and 18078 transitions. [2018-11-07 18:08:01,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:08:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16035 states and 18078 transitions. [2018-11-07 18:08:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2018-11-07 18:08:01,643 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:01,644 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:08:01,644 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:01,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash 715368498, now seen corresponding path program 1 times [2018-11-07 18:08:01,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:01,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:01,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6322 backedges. 1204 proven. 3890 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2018-11-07 18:08:05,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:05,255 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:05,256 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1502 with the following transitions: [2018-11-07 18:08:05,256 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:08:05,259 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:05,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:05,456 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:08:06,409 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:08:06,409 INFO L272 AbstractInterpreter]: Visited 201 different actions 1228 times. Merged at 13 different actions 81 times. Widened at 1 different actions 2 times. Found 37 fixpoints after 7 different actions. Largest state had 24 variables. [2018-11-07 18:08:06,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:06,417 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:08:06,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:06,417 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 18:08:06,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:06,426 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:08:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:06,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:08:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6322 backedges. 2093 proven. 2 refuted. 0 times theorem prover too weak. 4227 trivial. 0 not checked. [2018-11-07 18:08:08,073 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:08:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6322 backedges. 1293 proven. 86 refuted. 0 times theorem prover too weak. 4943 trivial. 0 not checked. [2018-11-07 18:08:10,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:08:10,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 5, 5] total 26 [2018-11-07 18:08:10,282 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:08:10,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:08:10,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:08:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:08:10,284 INFO L87 Difference]: Start difference. First operand 16035 states and 18078 transitions. Second operand 24 states. [2018-11-07 18:08:17,743 WARN L179 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-11-07 18:08:22,524 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 22 Received shutdown request... [2018-11-07 18:08:23,398 WARN L187 SmtUtils]: Removed 8 from assertion stack [2018-11-07 18:08:23,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-07 18:08:23,399 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:08:23,409 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:08:23,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:08:23 BoogieIcfgContainer [2018-11-07 18:08:23,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:08:23,410 INFO L168 Benchmark]: Toolchain (without parser) took 213045.26 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:08:23,415 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:08:23,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:23,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 153.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:23,416 INFO L168 Benchmark]: Boogie Preprocessor took 97.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:08:23,423 INFO L168 Benchmark]: RCFGBuilder took 3848.01 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: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:23,424 INFO L168 Benchmark]: TraceAbstraction took 208031.19 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -913.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:08:23,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 908.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 153.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3848.01 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: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208031.19 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -913.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (16035states) and FLOYD_HOARE automaton (currently 62 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 29. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 207.9s OverallTime, 15 OverallIterations, 12 TraceHistogramMax, 145.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2107 SDtfs, 40652 SDslu, 4463 SDs, 0 SdLazy, 49842 SolverSat, 7375 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.8s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 15563 GetRequests, 15075 SyntacticMatches, 14 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6384 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17117occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 12 AbstIntIterations, 4 AbstIntStrong, 0.9971212802428573 AbsIntWeakeningRatio, 0.0938337801608579 AbsIntAvgWeakeningVarsNumRemoved, 14.768766756032171 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 6223 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 28.4s InterpolantComputationTime, 15306 NumberOfCodeBlocks, 15306 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 22025 ConstructedInterpolants, 0 QuantifiedInterpolants, 90529309 SizeOfPredicates, 29 NumberOfNonLiveVariables, 9660 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 31 InterpolantComputations, 3 PerfectInterpolantSequences, 47128/56606 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown