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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:15:15,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:15:15,361 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:15:15,378 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:15:15,379 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:15:15,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:15:15,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:15:15,386 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:15:15,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:15:15,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:15:15,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:15:15,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:15:15,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:15:15,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:15:15,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:15:15,403 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:15:15,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:15:15,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:15:15,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:15:15,411 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:15:15,414 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:15:15,417 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:15:15,421 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 01:15:15,421 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 01:15:15,421 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 01:15:15,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 01:15:15,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 01:15:15,426 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 01:15:15,426 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 01:15:15,432 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 01:15:15,432 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 01:15:15,434 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 01:15:15,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:15:15,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:15:15,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:15:15,437 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:15:15,437 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:15:15,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:15:15,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:15:15,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:15:15,466 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:15:15,466 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:15:15,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:15:15,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:15:15,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:15:15,467 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:15:15,467 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:15:15,467 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:15:15,468 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:15:15,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:15:15,468 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:15:15,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:15:15,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:15:15,469 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:15:15,469 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:15:15,469 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:15:15,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:15:15,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:15:15,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:15:15,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:15:15,470 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:15:15,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:15:15,471 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:15:15,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:15:15,471 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:15:15,471 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:15:15,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:15:15,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:15:15,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:15:15,472 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:15:15,472 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:15:15,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:15:15,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:15:15,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:15:15,534 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:15:15,535 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:15:15,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29_true-unreach-call_false-termination.c [2018-11-07 01:15:15,589 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d3f72210/b01a37a435fa4f268fa6f09bec1fd5b9/FLAG6ee56bf8b [2018-11-07 01:15:16,132 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:15:16,133 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label29_true-unreach-call_false-termination.c [2018-11-07 01:15:16,155 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d3f72210/b01a37a435fa4f268fa6f09bec1fd5b9/FLAG6ee56bf8b [2018-11-07 01:15:16,176 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d3f72210/b01a37a435fa4f268fa6f09bec1fd5b9 [2018-11-07 01:15:16,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:15:16,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:15:16,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:15:16,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:15:16,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:15:16,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:16,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c639f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16, skipping insertion in model container [2018-11-07 01:15:16,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:16,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:15:16,269 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:15:16,699 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:15:16,704 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:15:16,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:15:16,875 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:15:16,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16 WrapperNode [2018-11-07 01:15:16,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:15:16,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:15:16,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:15:16,877 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:15:16,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:16,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:15:17,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:15:17,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:15:17,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:15:17,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (1/1) ... [2018-11-07 01:15:17,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:15:17,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:15:17,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:15:17,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:15:17,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (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 01:15:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:15:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:15:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:15:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:15:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:15:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:15:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:15:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:15:17,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:15:20,407 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:15:20,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:20 BoogieIcfgContainer [2018-11-07 01:15:20,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:15:20,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:15:20,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:15:20,413 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:15:20,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:15:16" (1/3) ... [2018-11-07 01:15:20,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fa0f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:20, skipping insertion in model container [2018-11-07 01:15:20,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:16" (2/3) ... [2018-11-07 01:15:20,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fa0f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:20, skipping insertion in model container [2018-11-07 01:15:20,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:20" (3/3) ... [2018-11-07 01:15:20,417 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label29_true-unreach-call_false-termination.c [2018-11-07 01:15:20,428 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:15:20,437 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:15:20,459 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:15:20,512 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:15:20,512 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:15:20,512 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:15:20,513 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:15:20,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:15:20,513 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:15:20,514 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:15:20,514 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:15:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:15:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 01:15:20,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:20,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:20,591 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:20,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash 150214839, now seen corresponding path program 1 times [2018-11-07 01:15:20,601 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:20,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:20,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:20,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:20,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:21,291 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:15:21,534 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 01:15:21,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:21,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:15:21,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:21,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:15:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:15:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:21,565 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:15:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:23,037 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-11-07 01:15:23,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:15:23,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2018-11-07 01:15:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:23,059 INFO L225 Difference]: With dead ends: 627 [2018-11-07 01:15:23,059 INFO L226 Difference]: Without dead ends: 388 [2018-11-07 01:15:23,067 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 01:15:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-07 01:15:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-11-07 01:15:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-07 01:15:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-11-07 01:15:23,166 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 109 [2018-11-07 01:15:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:23,167 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-11-07 01:15:23,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:15:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-11-07 01:15:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 01:15:23,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:23,175 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:23,175 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:23,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 348320458, now seen corresponding path program 1 times [2018-11-07 01:15:23,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:23,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:23,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:23,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:23,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:15:23,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:23,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:15:23,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:23,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:15:23,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:15:23,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:23,397 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 3 states. [2018-11-07 01:15:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:24,566 INFO L93 Difference]: Finished difference Result 1053 states and 1768 transitions. [2018-11-07 01:15:24,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:15:24,569 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2018-11-07 01:15:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:24,577 INFO L225 Difference]: With dead ends: 1053 [2018-11-07 01:15:24,578 INFO L226 Difference]: Without dead ends: 676 [2018-11-07 01:15:24,585 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2018-11-07 01:15:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2018-11-07 01:15:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-11-07 01:15:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1011 transitions. [2018-11-07 01:15:24,646 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1011 transitions. Word has length 118 [2018-11-07 01:15:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:24,647 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 1011 transitions. [2018-11-07 01:15:24,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:15:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1011 transitions. [2018-11-07 01:15:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 01:15:24,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:24,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:24,653 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:24,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:24,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1318631550, now seen corresponding path program 1 times [2018-11-07 01:15:24,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:24,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:24,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:24,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:24,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:24,835 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 01:15:24,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:24,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:15:24,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:24,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:15:24,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:15:24,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:24,837 INFO L87 Difference]: Start difference. First operand 676 states and 1011 transitions. Second operand 3 states. [2018-11-07 01:15:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:26,767 INFO L93 Difference]: Finished difference Result 1926 states and 2979 transitions. [2018-11-07 01:15:26,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:15:26,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2018-11-07 01:15:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:26,778 INFO L225 Difference]: With dead ends: 1926 [2018-11-07 01:15:26,779 INFO L226 Difference]: Without dead ends: 1256 [2018-11-07 01:15:26,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2018-11-07 01:15:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1256. [2018-11-07 01:15:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2018-11-07 01:15:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1828 transitions. [2018-11-07 01:15:26,835 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1828 transitions. Word has length 123 [2018-11-07 01:15:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:26,836 INFO L480 AbstractCegarLoop]: Abstraction has 1256 states and 1828 transitions. [2018-11-07 01:15:26,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:15:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1828 transitions. [2018-11-07 01:15:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 01:15:26,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:26,844 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:26,844 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:26,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:26,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1684085040, now seen corresponding path program 1 times [2018-11-07 01:15:26,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:26,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:26,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:26,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:26,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:27,117 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:15:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 01:15:27,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:15:27,474 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:15:27,475 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-11-07 01:15:27,477 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [56], [59], [63], [64], [68], [72], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:15:27,553 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:15:27,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:15:39,806 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:15:39,808 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-11-07 01:15:39,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:39,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:15:44,514 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 81.15% of their original sizes. [2018-11-07 01:15:44,515 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:15:48,128 INFO L415 sIntCurrentIteration]: We unified 154 AI predicates to 154 [2018-11-07 01:15:48,128 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:15:48,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:15:48,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-07 01:15:48,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:48,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 01:15:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 01:15:48,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-11-07 01:15:48,131 INFO L87 Difference]: Start difference. First operand 1256 states and 1828 transitions. Second operand 14 states. [2018-11-07 01:17:41,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:17:41,691 INFO L93 Difference]: Finished difference Result 2806 states and 4098 transitions. [2018-11-07 01:17:41,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 01:17:41,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2018-11-07 01:17:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:17:41,704 INFO L225 Difference]: With dead ends: 2806 [2018-11-07 01:17:41,704 INFO L226 Difference]: Without dead ends: 1556 [2018-11-07 01:17:41,710 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-11-07 01:17:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-11-07 01:17:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1403. [2018-11-07 01:17:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2018-11-07 01:17:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1989 transitions. [2018-11-07 01:17:41,823 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1989 transitions. Word has length 155 [2018-11-07 01:17:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:17:41,823 INFO L480 AbstractCegarLoop]: Abstraction has 1403 states and 1989 transitions. [2018-11-07 01:17:41,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 01:17:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1989 transitions. [2018-11-07 01:17:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 01:17:41,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:17:41,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:41,830 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:17:41,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:17:41,831 INFO L82 PathProgramCache]: Analyzing trace with hash -47073822, now seen corresponding path program 1 times [2018-11-07 01:17:41,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:17:41,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:17:41,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:17:41,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:17:41,833 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:17:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:17:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:17:42,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:17:42,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:17:42,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 161 with the following transitions: [2018-11-07 01:17:42,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:17:42,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:17:42,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:18:21,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:18:21,216 INFO L272 AbstractInterpreter]: Visited 113 different actions 331 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-11-07 01:18:21,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:18:21,227 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:18:26,139 INFO L227 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 84.17% of their original sizes. [2018-11-07 01:18:26,140 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 01:19:16,165 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:19:16,170 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:19:16,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:16 BoogieIcfgContainer [2018-11-07 01:19:16,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:19:16,172 INFO L168 Benchmark]: Toolchain (without parser) took 239980.98 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -934.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 01:19:16,173 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:19:16,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:16,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 126.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:16,175 INFO L168 Benchmark]: Boogie Preprocessor took 101.89 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:19:16,176 INFO L168 Benchmark]: RCFGBuilder took 3301.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.2 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:16,177 INFO L168 Benchmark]: TraceAbstraction took 235761.43 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -264.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 01:19:16,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 126.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.89 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3301.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.2 MB). Peak memory consumption was 103.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235761.43 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -264.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 478]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 478). Cancelled while BasicCegarLoop was analyzing trace of length 161 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 235.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 118.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 946 SDtfs, 1362 SDslu, 499 SDs, 0 SdLazy, 2001 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 180 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1403occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 50.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9945100641249959 AbsIntWeakeningRatio, 0.21405750798722045 AbsIntAvgWeakeningVarsNumRemoved, 933.6900958466454 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 158 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 505 NumberOfCodeBlocks, 505 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 501 ConstructedInterpolants, 0 QuantifiedInterpolants, 168045 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 60/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown