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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:05:43,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:05:43,469 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:05:43,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:05:43,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:05:43,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:05:43,486 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:05:43,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:05:43,489 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:05:43,490 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:05:43,491 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:05:43,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:05:43,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:05:43,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:05:43,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:05:43,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:05:43,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:05:43,498 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:05:43,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:05:43,501 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:05:43,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:05:43,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:05:43,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:05:43,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:05:43,507 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:05:43,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:05:43,509 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:05:43,510 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:05:43,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:05:43,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:05:43,512 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:05:43,513 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 12:05:43,515 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.epf [2018-11-07 12:05:43,536 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:05:43,537 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:05:43,538 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:05:43,538 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:05:43,538 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:05:43,538 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:05:43,538 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:05:43,539 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:05:43,539 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:05:43,539 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:05:43,539 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:05:43,539 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:05:43,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:05:43,540 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:05:43,541 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:05:43,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:05:43,542 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:05:43,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:05:43,542 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:05:43,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:05:43,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:05:43,543 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:05:43,543 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:05:43,543 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:05:43,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:05:43,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:05:43,544 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:05:43,544 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:05:43,544 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:05:43,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:05:43,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:05:43,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:05:43,619 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:05:43,620 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:05:43,620 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 12:05:43,698 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f87649ab/b7b9eed937f14812a1d7449b4cf94c13/FLAG46471ee43 [2018-11-07 12:05:44,349 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:05:44,355 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 12:05:44,380 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f87649ab/b7b9eed937f14812a1d7449b4cf94c13/FLAG46471ee43 [2018-11-07 12:05:44,404 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f87649ab/b7b9eed937f14812a1d7449b4cf94c13 [2018-11-07 12:05:44,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:05:44,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:05:44,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:05:44,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:05:44,431 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:05:44,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:44" (1/1) ... [2018-11-07 12:05:44,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681df771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:44, skipping insertion in model container [2018-11-07 12:05:44,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:44" (1/1) ... [2018-11-07 12:05:44,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:05:44,521 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:05:45,101 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:05:45,108 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:05:45,233 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:05:45,254 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:05:45,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45 WrapperNode [2018-11-07 12:05:45,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:05:45,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:05:45,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:05:45,256 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:05:45,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:05:45,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:05:45,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:05:45,411 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:05:45,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (1/1) ... [2018-11-07 12:05:45,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:05:45,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:05:45,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:05:45,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:05:45,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (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 12:05:45,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:05:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:05:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:05:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:05:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:05:45,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:05:45,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:05:45,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:05:45,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:05:48,973 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:05:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:48 BoogieIcfgContainer [2018-11-07 12:05:48,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:05:48,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:05:48,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:05:48,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:05:48,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:05:44" (1/3) ... [2018-11-07 12:05:48,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7704e4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:48, skipping insertion in model container [2018-11-07 12:05:48,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:45" (2/3) ... [2018-11-07 12:05:48,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7704e4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:48, skipping insertion in model container [2018-11-07 12:05:48,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:48" (3/3) ... [2018-11-07 12:05:48,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label44_false-unreach-call_false-termination.c [2018-11-07 12:05:48,996 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:05:49,006 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:05:49,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:05:49,067 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:05:49,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:05:49,068 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:05:49,068 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:05:49,068 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:05:49,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:05:49,069 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:05:49,069 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:05:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:05:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 12:05:49,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:05:49,110 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:05:49,114 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:05:49,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:05:49,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1864594988, now seen corresponding path program 1 times [2018-11-07 12:05:49,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:05:49,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:49,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:05:49,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:49,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:05:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:05:49,591 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 12:05:49,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:05:49,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:05:49,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:05:49,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:05:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:05:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:05:49,615 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 12:05:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:05:52,689 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 12:05:52,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:05:52,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-07 12:05:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:05:52,715 INFO L225 Difference]: With dead ends: 894 [2018-11-07 12:05:52,716 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 12:05:52,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:05:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 12:05:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 12:05:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 12:05:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 12:05:52,826 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 18 [2018-11-07 12:05:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:05:52,827 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 12:05:52,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:05:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 12:05:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 12:05:52,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:05:52,836 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:05:52,836 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:05:52,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:05:52,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2115592732, now seen corresponding path program 1 times [2018-11-07 12:05:52,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:05:52,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:52,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:05:52,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:52,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:05:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:05:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:05:53,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:05:53,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:05:53,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:05:53,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:05:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:05:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:05:53,141 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 12:05:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:05:55,968 INFO L93 Difference]: Finished difference Result 1594 states and 2534 transitions. [2018-11-07 12:05:55,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:05:55,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-11-07 12:05:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:05:55,986 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 12:05:55,986 INFO L226 Difference]: Without dead ends: 780 [2018-11-07 12:05:55,994 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 12:05:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-11-07 12:05:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-11-07 12:05:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-11-07 12:05:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1153 transitions. [2018-11-07 12:05:56,065 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1153 transitions. Word has length 102 [2018-11-07 12:05:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:05:56,066 INFO L480 AbstractCegarLoop]: Abstraction has 780 states and 1153 transitions. [2018-11-07 12:05:56,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:05:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1153 transitions. [2018-11-07 12:05:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 12:05:56,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:05:56,074 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:05:56,075 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:05:56,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:05:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1798704196, now seen corresponding path program 1 times [2018-11-07 12:05:56,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:05:56,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:56,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:05:56,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:05:56,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:05:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:05:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:05:56,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:05:56,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 12:05:56,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:05:56,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:05:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:05:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:05:56,492 INFO L87 Difference]: Start difference. First operand 780 states and 1153 transitions. Second operand 7 states. [2018-11-07 12:06:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:06:00,710 INFO L93 Difference]: Finished difference Result 2309 states and 3537 transitions. [2018-11-07 12:06:00,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 12:06:00,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-11-07 12:06:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:06:00,727 INFO L225 Difference]: With dead ends: 2309 [2018-11-07 12:06:00,727 INFO L226 Difference]: Without dead ends: 1535 [2018-11-07 12:06:00,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-07 12:06:00,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2018-11-07 12:06:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1471. [2018-11-07 12:06:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2018-11-07 12:06:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2125 transitions. [2018-11-07 12:06:00,811 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2125 transitions. Word has length 114 [2018-11-07 12:06:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:06:00,812 INFO L480 AbstractCegarLoop]: Abstraction has 1471 states and 2125 transitions. [2018-11-07 12:06:00,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:06:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2125 transitions. [2018-11-07 12:06:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 12:06:00,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:00,819 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:00,819 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:00,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:00,820 INFO L82 PathProgramCache]: Analyzing trace with hash 47001231, now seen corresponding path program 1 times [2018-11-07 12:06:00,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:00,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:00,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:00,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:00,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:06:01,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:06:01,044 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:06:01,045 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-11-07 12:06:01,047 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:06:01,112 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:06:01,112 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:06:01,690 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:06:01,694 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:06:01,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:01,729 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:06:02,277 INFO L227 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 77.26% of their original sizes. [2018-11-07 12:06:02,277 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:06:02,436 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-11-07 12:06:02,436 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:06:02,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:06:02,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 12:06:02,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:06:02,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:06:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:06:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:06:02,439 INFO L87 Difference]: Start difference. First operand 1471 states and 2125 transitions. Second operand 7 states. [2018-11-07 12:06:05,593 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:08:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:08:45,721 INFO L93 Difference]: Finished difference Result 3121 states and 4465 transitions. [2018-11-07 12:08:45,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:08:45,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2018-11-07 12:08:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:08:45,730 INFO L225 Difference]: With dead ends: 3121 [2018-11-07 12:08:45,730 INFO L226 Difference]: Without dead ends: 1656 [2018-11-07 12:08:45,736 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:08:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2018-11-07 12:08:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1654. [2018-11-07 12:08:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2018-11-07 12:08:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2316 transitions. [2018-11-07 12:08:45,781 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2316 transitions. Word has length 185 [2018-11-07 12:08:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:08:45,782 INFO L480 AbstractCegarLoop]: Abstraction has 1654 states and 2316 transitions. [2018-11-07 12:08:45,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:08:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2316 transitions. [2018-11-07 12:08:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 12:08:45,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:08:45,786 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:08:45,787 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:08:45,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:08:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash -489192109, now seen corresponding path program 1 times [2018-11-07 12:08:45,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:08:45,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:08:45,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:08:45,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:08:45,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:08:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:08:46,323 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:08:46,527 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 12:08:46,735 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:08:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:08:47,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:08:47,130 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:08:47,130 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 12:08:47,131 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [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], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:08:47,136 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:08:47,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:08:47,317 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:08:47,318 INFO L272 AbstractInterpreter]: Visited 104 different actions 201 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 12:08:47,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:08:47,357 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:08:47,739 INFO L227 lantSequenceWeakener]: Weakened 76 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 12:08:47,740 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:08:48,992 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 12:08:48,993 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:08:48,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:08:48,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [12] total 38 [2018-11-07 12:08:48,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:08:48,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-07 12:08:48,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-07 12:08:48,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2018-11-07 12:08:48,995 INFO L87 Difference]: Start difference. First operand 1654 states and 2316 transitions. Second operand 28 states. [2018-11-07 12:08:59,560 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown