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/Problem18_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:41:43,288 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:41:43,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:41:43,307 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:41:43,307 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:41:43,309 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:41:43,311 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:41:43,314 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:41:43,317 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:41:43,325 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:41:43,326 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:41:43,326 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:41:43,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:41:43,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:41:43,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:41:43,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:41:43,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:41:43,338 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:41:43,340 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:41:43,341 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:41:43,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:41:43,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:41:43,350 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:41:43,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:41:43,351 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:41:43,352 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:41:43,353 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:41:43,354 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:41:43,355 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:41:43,358 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:41:43,358 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:41:43,359 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:41:43,359 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:41:43,359 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:41:43,361 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:41:43,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:41:43,362 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 15:41:43,380 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:41:43,380 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:41:43,381 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:41:43,381 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:41:43,382 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:41:43,382 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:41:43,382 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:41:43,382 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:41:43,382 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:41:43,383 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:41:43,383 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:41:43,383 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:41:43,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:41:43,384 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:41:43,384 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:41:43,384 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:41:43,384 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:41:43,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:41:43,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:41:43,385 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:41:43,385 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:41:43,385 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:41:43,386 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:41:43,386 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:41:43,386 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:41:43,386 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:41:43,386 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:41:43,387 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:41:43,387 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:41:43,387 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:41:43,387 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:41:43,387 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:41:43,388 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:41:43,388 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:41:43,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:41:43,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:41:43,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:41:43,463 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:41:43,464 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:41:43,465 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-11-07 15:41:43,526 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963d7081c/4abac88beed3488cb6a2fd5480bdde48/FLAG97bfe9617 [2018-11-07 15:41:44,214 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:41:44,215 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label21_true-unreach-call.c [2018-11-07 15:41:44,242 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963d7081c/4abac88beed3488cb6a2fd5480bdde48/FLAG97bfe9617 [2018-11-07 15:41:44,258 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963d7081c/4abac88beed3488cb6a2fd5480bdde48 [2018-11-07 15:41:44,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:41:44,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:41:44,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:44,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:41:44,277 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:41:44,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:44" (1/1) ... [2018-11-07 15:41:44,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e13d335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:44, skipping insertion in model container [2018-11-07 15:41:44,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:44" (1/1) ... [2018-11-07 15:41:44,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:41:44,437 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:41:45,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:45,659 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:41:46,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:46,170 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:41:46,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46 WrapperNode [2018-11-07 15:41:46,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:46,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:46,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:41:46,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:41:46,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:46,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:41:46,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:41:46,451 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:41:46,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (1/1) ... [2018-11-07 15:41:46,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:41:46,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:41:46,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:41:46,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:41:46,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (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 15:41:46,710 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:41:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:41:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:41:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:41:46,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:41:46,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:41:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:41:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:41:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:41:46,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:41:46,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:41:46,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:41:46,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:41:54,314 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:41:54,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:54 BoogieIcfgContainer [2018-11-07 15:41:54,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:41:54,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:41:54,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:41:54,320 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:41:54,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:41:44" (1/3) ... [2018-11-07 15:41:54,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d2c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:54, skipping insertion in model container [2018-11-07 15:41:54,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:46" (2/3) ... [2018-11-07 15:41:54,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d2c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:54, skipping insertion in model container [2018-11-07 15:41:54,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:54" (3/3) ... [2018-11-07 15:41:54,324 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label21_true-unreach-call.c [2018-11-07 15:41:54,334 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:41:54,344 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:41:54,363 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:41:54,416 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:41:54,417 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:41:54,417 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:41:54,417 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:41:54,417 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:41:54,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:41:54,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:41:54,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:41:54,481 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:41:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 15:41:54,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:54,497 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:41:54,500 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:54,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1608730383, now seen corresponding path program 1 times [2018-11-07 15:41:54,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:54,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:54,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:54,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:54,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:55,125 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:41:55,240 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 15:41:55,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:55,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:41:55,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:55,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:41:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:41:55,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:41:55,268 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:42:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:02,088 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:42:02,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:42:02,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-11-07 15:42:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:02,121 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:42:02,122 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:42:02,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:42:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:42:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:42:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:42:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 15:42:02,278 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 65 [2018-11-07 15:42:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:02,279 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 15:42:02,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:42:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 15:42:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 15:42:02,293 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:02,294 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, 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] [2018-11-07 15:42:02,294 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:02,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash -172634104, now seen corresponding path program 1 times [2018-11-07 15:42:02,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:02,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:02,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:02,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:02,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:02,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:02,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:02,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:02,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:02,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:02,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:02,629 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 15:42:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:14,360 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 15:42:14,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:14,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 15:42:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:14,399 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 15:42:14,399 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 15:42:14,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:42:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 15:42:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 15:42:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 15:42:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 15:42:14,576 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 139 [2018-11-07 15:42:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:14,577 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 15:42:14,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 15:42:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-07 15:42:14,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:14,595 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, 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] [2018-11-07 15:42:14,595 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:14,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:14,596 INFO L82 PathProgramCache]: Analyzing trace with hash -399833123, now seen corresponding path program 1 times [2018-11-07 15:42:14,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:14,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:14,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:14,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:14,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:15,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:15,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:15,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:15,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:15,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:15,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:15,037 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 6 states. [2018-11-07 15:42:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:21,192 INFO L93 Difference]: Finished difference Result 10084 states and 16817 transitions. [2018-11-07 15:42:21,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:21,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2018-11-07 15:42:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:21,230 INFO L225 Difference]: With dead ends: 10084 [2018-11-07 15:42:21,230 INFO L226 Difference]: Without dead ends: 5795 [2018-11-07 15:42:21,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:42:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2018-11-07 15:42:21,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5766. [2018-11-07 15:42:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5766 states. [2018-11-07 15:42:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 9291 transitions. [2018-11-07 15:42:21,410 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 9291 transitions. Word has length 228 [2018-11-07 15:42:21,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:21,411 INFO L480 AbstractCegarLoop]: Abstraction has 5766 states and 9291 transitions. [2018-11-07 15:42:21,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 9291 transitions. [2018-11-07 15:42:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 15:42:21,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:21,421 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 15:42:21,421 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:21,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2045090159, now seen corresponding path program 1 times [2018-11-07 15:42:21,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:21,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:21,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:21,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:21,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:21,738 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 116 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:42:22,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:42:22,047 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:42:22,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 15:42:22,050 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], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2043], [2045], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:42:22,121 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:42:22,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:42:22,696 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:42:22,697 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:42:22,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:22,747 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:42:23,437 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 78.08% of their original sizes. [2018-11-07 15:42:23,437 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:42:23,751 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 15:42:23,757 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:42:23,758 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:42:23,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:42:23,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:23,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:42:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:42:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:42:23,760 INFO L87 Difference]: Start difference. First operand 5766 states and 9291 transitions. Second operand 7 states. [2018-11-07 15:42:30,737 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