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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:50:34,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:50:34,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:50:34,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:50:34,545 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:50:34,546 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:50:34,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:50:34,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:50:34,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:50:34,552 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:50:34,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:50:34,553 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:50:34,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:50:34,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:50:34,556 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:50:34,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:50:34,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:50:34,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:50:34,561 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:50:34,563 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:50:34,564 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:50:34,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:50:34,568 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:50:34,568 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:50:34,568 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:50:34,569 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:50:34,570 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:50:34,571 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:50:34,572 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:50:34,573 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:50:34,573 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:50:34,574 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:50:34,574 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:50:34,574 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:50:34,575 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:50:34,576 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:50:34,577 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:50:34,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:50:34,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:50:34,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:50:34,594 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:50:34,594 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:50:34,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:50:34,594 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:50:34,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:50:34,595 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:50:34,595 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:50:34,595 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:50:34,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:50:34,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:50:34,596 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:50:34,596 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:50:34,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:50:34,597 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:50:34,597 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:50:34,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:50:34,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:50:34,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:50:34,598 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:50:34,598 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:50:34,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:50:34,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:50:34,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:50:34,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:50:34,599 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:50:34,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:50:34,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:50:34,599 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:50:34,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:50:34,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:50:34,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:50:34,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:50:34,600 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:50:34,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:50:34,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:50:34,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:50:34,672 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:50:34,673 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:50:34,673 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-27 07:50:34,729 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c00f731e4/2f73a6f3ff5b4b9099c1764a47880f09/FLAG6f3640013 [2018-10-27 07:50:35,484 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:50:35,485 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-27 07:50:35,515 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c00f731e4/2f73a6f3ff5b4b9099c1764a47880f09/FLAG6f3640013 [2018-10-27 07:50:35,532 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c00f731e4/2f73a6f3ff5b4b9099c1764a47880f09 [2018-10-27 07:50:35,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:50:35,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:50:35,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:35,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:50:35,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:50:35,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:35" (1/1) ... [2018-10-27 07:50:35,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116b2aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:35, skipping insertion in model container [2018-10-27 07:50:35,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:35" (1/1) ... [2018-10-27 07:50:35,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:50:35,748 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:50:37,028 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:37,033 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:50:37,696 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:37,734 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:50:37,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37 WrapperNode [2018-10-27 07:50:37,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:37,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:37,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:50:37,737 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:50:37,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:37,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:38,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:50:38,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:50:38,212 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:50:38,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (1/1) ... [2018-10-27 07:50:38,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:50:38,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:50:38,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:50:38,575 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:50:38,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (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 07:50:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:50:38,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:50:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:50:38,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:50:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:50:38,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:50:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:50:38,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:50:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:50:38,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:50:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:50:38,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:50:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:50:38,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:50:50,408 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:50:50,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:50:50 BoogieIcfgContainer [2018-10-27 07:50:50,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:50:50,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:50:50,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:50:50,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:50:50,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:50:35" (1/3) ... [2018-10-27 07:50:50,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70333da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:50:50, skipping insertion in model container [2018-10-27 07:50:50,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:37" (2/3) ... [2018-10-27 07:50:50,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70333da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:50:50, skipping insertion in model container [2018-10-27 07:50:50,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:50:50" (3/3) ... [2018-10-27 07:50:50,418 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-10-27 07:50:50,428 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:50:50,438 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:50:50,455 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:50:50,501 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:50:50,501 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:50:50,502 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:50:50,502 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:50:50,502 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:50:50,502 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:50:50,502 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:50:50,502 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:50:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:50:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-27 07:50:50,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:50:50,556 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] [2018-10-27 07:50:50,558 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:50:50,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:50:50,563 INFO L82 PathProgramCache]: Analyzing trace with hash -937997924, now seen corresponding path program 1 times [2018-10-27 07:50:50,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:50:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:50,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:50:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:50,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:50:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:50:51,076 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 07:50:51,095 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 07:50:51,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:50:51,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:50:51,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:50:51,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:50:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:50:51,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:50:51,149 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-27 07:51:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:04,719 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-27 07:51:04,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:51:04,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-27 07:51:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:04,761 INFO L225 Difference]: With dead ends: 3234 [2018-10-27 07:51:04,761 INFO L226 Difference]: Without dead ends: 2388 [2018-10-27 07:51:04,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:51:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-27 07:51:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-27 07:51:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-27 07:51:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-10-27 07:51:04,960 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 44 [2018-10-27 07:51:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:04,961 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-10-27 07:51:04,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:51:04,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-10-27 07:51:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-27 07:51:04,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:04,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:04,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:04,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:04,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1418156750, now seen corresponding path program 1 times [2018-10-27 07:51:04,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:04,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:04,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:04,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:04,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:05,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:05,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:51:05,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:05,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:05,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:05,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:05,453 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-10-27 07:51:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:22,554 INFO L93 Difference]: Finished difference Result 9459 states and 16272 transitions. [2018-10-27 07:51:22,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 07:51:22,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-27 07:51:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:22,616 INFO L225 Difference]: With dead ends: 9459 [2018-10-27 07:51:22,617 INFO L226 Difference]: Without dead ends: 7077 [2018-10-27 07:51:22,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:51:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2018-10-27 07:51:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 7026. [2018-10-27 07:51:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7026 states. [2018-10-27 07:51:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 10545 transitions. [2018-10-27 07:51:22,853 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 10545 transitions. Word has length 144 [2018-10-27 07:51:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:22,854 INFO L481 AbstractCegarLoop]: Abstraction has 7026 states and 10545 transitions. [2018-10-27 07:51:22,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:51:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 10545 transitions. [2018-10-27 07:51:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-27 07:51:22,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:22,868 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:51:22,868 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:22,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash -455141647, now seen corresponding path program 1 times [2018-10-27 07:51:22,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:22,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:22,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:22,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:22,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:51:23,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:51:23,123 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:51:23,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-27 07:51:23,126 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:51:23,174 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:51:23,174 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:51:23,697 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:51:23,698 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:51:23,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:23,720 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:51:24,185 INFO L227 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 75.53% of their original sizes. [2018-10-27 07:51:24,187 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:51:24,281 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-10-27 07:51:24,281 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:51:24,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:51:24,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 07:51:24,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:24,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:24,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:24,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:24,284 INFO L87 Difference]: Start difference. First operand 7026 states and 10545 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown