java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:04:23,400 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:04:23,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:04:23,414 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:04:23,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:04:23,415 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:04:23,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:04:23,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:04:23,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:04:23,422 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:04:23,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:04:23,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:04:23,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:04:23,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:04:23,435 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:04:23,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:04:23,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:04:23,443 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:04:23,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:04:23,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:04:23,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:04:23,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:04:23,465 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:04:23,465 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:04:23,465 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:04:23,470 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:04:23,471 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:04:23,475 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:04:23,476 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:04:23,478 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:04:23,479 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:04:23,479 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:04:23,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:04:23,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:04:23,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:04:23,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:04:23,484 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:04:23,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:04:23,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:04:23,520 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:04:23,520 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:04:23,520 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:04:23,520 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:04:23,521 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:04:23,521 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:04:23,522 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:04:23,522 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:04:23,522 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:04:23,522 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:04:23,523 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:04:23,523 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:04:23,524 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:04:23,524 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:04:23,524 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:04:23,524 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:04:23,524 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:04:23,525 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:04:23,525 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:04:23,525 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:04:23,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:04:23,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:04:23,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:04:23,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:04:23,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:04:23,528 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:04:23,528 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:04:23,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:04:23,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:04:23,529 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:04:23,529 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:04:23,529 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:04:23,597 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:04:23,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:04:23,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:04:23,619 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:04:23,619 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:04:23,620 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 15:04:23,686 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da10895d/208963fc016743d0a5d9faf4643cfbbb/FLAG7057cd74b [2018-10-27 15:04:24,402 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:04:24,403 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-27 15:04:24,427 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da10895d/208963fc016743d0a5d9faf4643cfbbb/FLAG7057cd74b [2018-10-27 15:04:24,443 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da10895d/208963fc016743d0a5d9faf4643cfbbb [2018-10-27 15:04:24,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:04:24,457 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:04:24,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:04:24,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:04:24,463 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:04:24,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:04:24" (1/1) ... [2018-10-27 15:04:24,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:24, skipping insertion in model container [2018-10-27 15:04:24,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:04:24" (1/1) ... [2018-10-27 15:04:24,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:04:24,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:04:25,767 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:04:25,772 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:04:26,186 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:04:26,216 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:04:26,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26 WrapperNode [2018-10-27 15:04:26,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:04:26,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:04:26,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:04:26,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:04:26,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:04:26,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:04:26,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:04:26,597 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:04:26,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... [2018-10-27 15:04:26,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:04:26,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:04:26,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:04:26,820 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:04:26,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:04:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:04:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:04:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:04:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:04:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:04:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:04:26,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:04:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:04:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:04:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:04:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:04:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:04:34,440 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:04:34,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:04:34 BoogieIcfgContainer [2018-10-27 15:04:34,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:04:34,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:04:34,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:04:34,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:04:34,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:04:24" (1/3) ... [2018-10-27 15:04:34,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc95e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:04:34, skipping insertion in model container [2018-10-27 15:04:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:04:26" (2/3) ... [2018-10-27 15:04:34,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc95e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:04:34, skipping insertion in model container [2018-10-27 15:04:34,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:04:34" (3/3) ... [2018-10-27 15:04:34,450 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-10-27 15:04:34,459 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:04:34,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:04:34,486 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:04:34,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:04:34,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:04:34,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:04:34,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:04:34,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:04:34,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:04:34,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:04:34,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:04:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 15:04:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 15:04:34,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:04:34,581 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:04:34,583 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:04:34,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-10-27 15:04:34,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:04:34,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:34,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:04:34,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:34,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:04:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:04:35,065 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:04:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:04:35,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:04:35,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:04:35,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:04:35,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:04:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:04:35,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:04:35,215 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 15:04:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:04:41,223 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 15:04:41,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:04:41,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-27 15:04:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:04:41,273 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 15:04:41,274 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 15:04:41,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:04:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 15:04:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 15:04:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 15:04:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-27 15:04:41,484 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-10-27 15:04:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:04:41,485 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-27 15:04:41,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:04:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-27 15:04:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 15:04:41,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:04:41,501 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:04:41,501 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:04:41,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:41,501 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-10-27 15:04:41,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:04:41,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:41,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:04:41,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:41,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:04:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:04:41,877 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:04:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:04:42,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:04:42,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:04:42,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:04:42,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:04:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:04:42,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:04:42,124 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-27 15:04:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:04:51,626 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-27 15:04:51,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:04:51,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-27 15:04:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:04:51,650 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 15:04:51,650 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 15:04:51,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:04:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 15:04:51,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 15:04:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 15:04:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-27 15:04:51,750 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-10-27 15:04:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:04:51,751 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-27 15:04:51,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:04:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-27 15:04:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 15:04:51,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:04:51,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:04:51,766 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:04:51,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:51,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-10-27 15:04:51,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:04:51,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:51,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:04:51,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:51,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:04:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:04:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:04:52,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:04:52,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:04:52,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:04:52,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:04:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:04:52,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:04:52,028 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-27 15:05:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:05:05,491 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-27 15:05:05,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 15:05:05,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-27 15:05:05,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:05:05,552 INFO L225 Difference]: With dead ends: 11199 [2018-10-27 15:05:05,553 INFO L226 Difference]: Without dead ends: 8280 [2018-10-27 15:05:05,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 15:05:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-27 15:05:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-27 15:05:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-27 15:05:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-27 15:05:05,829 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 130 [2018-10-27 15:05:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:05:05,830 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-27 15:05:05,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:05:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-27 15:05:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 15:05:05,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:05:05,834 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:05:05,834 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:05:05,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:05:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash -703578010, now seen corresponding path program 1 times [2018-10-27 15:05:05,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:05:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:05:05,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:05:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:05:05,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:05:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:05:06,086 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:05:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:05:06,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:05:06,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:05:06,320 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:05:06,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:05:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:05:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:05:06,322 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-27 15:05:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:05:12,167 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-27 15:05:12,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:05:12,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 15:05:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:05:12,248 INFO L225 Difference]: With dead ends: 20964 [2018-10-27 15:05:12,249 INFO L226 Difference]: Without dead ends: 12768 [2018-10-27 15:05:12,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:05:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-27 15:05:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-27 15:05:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-27 15:05:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-27 15:05:12,645 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 162 [2018-10-27 15:05:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:05:12,645 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-27 15:05:12,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:05:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-27 15:05:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 15:05:12,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:05:12,655 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:05:12,659 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:05:12,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:05:12,660 INFO L82 PathProgramCache]: Analyzing trace with hash 371580129, now seen corresponding path program 1 times [2018-10-27 15:05:12,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:05:12,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:05:12,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:05:12,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:05:12,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:05:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:05:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:05:13,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:05:13,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:05:13,118 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 15:05:13,121 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 15:05:13,170 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:05:13,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:05:13,624 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:05:13,626 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 15:05:13,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:05:13,665 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:05:14,238 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-27 15:05:14,239 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:05:14,479 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-10-27 15:05:14,479 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:05:14,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:05:14,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 15:05:14,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:05:14,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:05:14,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:05:14,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:05:14,483 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 6 states. [2018-10-27 15:05:21,329 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