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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:19:35,668 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:19:35,670 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:19:35,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:19:35,682 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:19:35,683 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:19:35,684 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:19:35,686 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:19:35,688 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:19:35,688 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:19:35,689 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:19:35,690 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:19:35,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:19:35,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:19:35,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:19:35,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:19:35,694 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:19:35,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:19:35,698 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:19:35,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:19:35,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:19:35,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:19:35,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:19:35,710 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:19:35,710 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:19:35,711 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:19:35,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:19:35,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:19:35,719 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:19:35,721 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:19:35,721 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:19:35,724 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:19:35,724 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:19:35,724 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:19:35,725 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:19:35,726 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:19:35,726 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-LIM.epf [2018-11-07 20:19:35,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:19:35,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:19:35,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:19:35,759 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:19:35,759 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:19:35,759 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:19:35,759 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:19:35,759 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:19:35,760 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:19:35,760 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:19:35,760 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:19:35,760 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:19:35,760 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:19:35,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:19:35,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:19:35,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:19:35,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:19:35,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:19:35,763 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:19:35,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:19:35,765 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:19:35,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:19:35,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:19:35,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:19:35,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:19:35,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:19:35,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:19:35,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:19:35,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:19:35,767 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:19:35,767 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:19:35,767 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:19:35,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:19:35,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:19:35,768 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:19:35,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:19:35,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:19:35,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:19:35,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:19:35,848 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:19:35,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-07 20:19:35,921 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801c2267c/a5256d0f92f84aedab76848f1b9bf06e/FLAG76891de36 [2018-11-07 20:19:36,710 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:19:36,711 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-11-07 20:19:36,751 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801c2267c/a5256d0f92f84aedab76848f1b9bf06e/FLAG76891de36 [2018-11-07 20:19:36,770 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/801c2267c/a5256d0f92f84aedab76848f1b9bf06e [2018-11-07 20:19:36,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:19:36,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:19:36,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:19:36,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:19:36,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:19:36,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:19:36" (1/1) ... [2018-11-07 20:19:36,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516be650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:36, skipping insertion in model container [2018-11-07 20:19:36,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:19:36" (1/1) ... [2018-11-07 20:19:36,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:19:36,959 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:19:38,217 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:19:38,222 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:19:38,904 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:19:38,940 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:19:38,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38 WrapperNode [2018-11-07 20:19:38,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:19:38,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:19:38,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:19:38,942 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:19:38,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:19:39,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:19:39,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:19:39,280 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:19:39,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (1/1) ... [2018-11-07 20:19:39,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:19:39,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:19:39,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:19:39,542 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:19:39,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (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 20:19:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:19:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:19:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:19:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:19:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:19:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:19:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:19:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:19:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:19:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:19:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:19:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:19:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:19:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:19:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:19:49,403 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:19:49,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:19:49 BoogieIcfgContainer [2018-11-07 20:19:49,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:19:49,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:19:49,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:19:49,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:19:49,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:19:36" (1/3) ... [2018-11-07 20:19:49,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eef6327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:19:49, skipping insertion in model container [2018-11-07 20:19:49,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:19:38" (2/3) ... [2018-11-07 20:19:49,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eef6327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:19:49, skipping insertion in model container [2018-11-07 20:19:49,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:19:49" (3/3) ... [2018-11-07 20:19:49,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-11-07 20:19:49,421 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:19:49,430 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:19:49,448 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:19:49,492 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:19:49,492 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:19:49,492 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:19:49,492 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:19:49,492 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:19:49,493 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:19:49,493 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:19:49,493 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:19:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:19:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 20:19:49,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:49,538 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] [2018-11-07 20:19:49,541 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:49,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1410046180, now seen corresponding path program 1 times [2018-11-07 20:19:49,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:49,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:49,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:49,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:49,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:49,982 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:19:50,098 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 20:19:50,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:50,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:19:50,101 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:50,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:19:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:19:50,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:19:50,127 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:19:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:56,914 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:19:56,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:19:56,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-07 20:19:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:56,954 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:19:56,955 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:19:56,965 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 20:19:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:19:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:19:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:19:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-11-07 20:19:57,127 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 38 [2018-11-07 20:19:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:57,128 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-11-07 20:19:57,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:19:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-11-07 20:19:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 20:19:57,140 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:57,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:57,141 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:57,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:57,142 INFO L82 PathProgramCache]: Analyzing trace with hash -552195830, now seen corresponding path program 1 times [2018-11-07 20:19:57,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:57,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:57,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:57,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:57,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:19:57,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:57,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:19:57,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:19:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:19:57,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:19:57,510 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-11-07 20:20:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:20:07,652 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-11-07 20:20:07,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:20:07,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-11-07 20:20:07,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:20:07,674 INFO L225 Difference]: With dead ends: 4038 [2018-11-07 20:20:07,674 INFO L226 Difference]: Without dead ends: 2440 [2018-11-07 20:20:07,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:20:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-11-07 20:20:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-11-07 20:20:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-11-07 20:20:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-11-07 20:20:07,761 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 112 [2018-11-07 20:20:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:20:07,762 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-11-07 20:20:07,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:20:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-11-07 20:20:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 20:20:07,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:20:07,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:20:07,770 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:20:07,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1294703450, now seen corresponding path program 1 times [2018-11-07 20:20:07,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:20:07,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:07,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:20:07,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:07,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:20:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:20:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:20:08,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:20:08,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:20:08,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-11-07 20:20:08,031 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], [2071], [2073], [2076], [2084], [2092], [2100], [2108], [2116], [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], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:20:08,077 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:20:08,077 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:20:08,867 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:20:08,869 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:20:08,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:08,915 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:20:09,341 INFO L227 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 75.6% of their original sizes. [2018-11-07 20:20:09,342 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:20:09,855 INFO L415 sIntCurrentIteration]: We unified 113 AI predicates to 113 [2018-11-07 20:20:09,855 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:20:09,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:20:09,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 20:20:09,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:20:09,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:20:09,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:20:09,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:20:09,858 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 11 states. [2018-11-07 20:20:19,861 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:21:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:21:12,318 INFO L93 Difference]: Finished difference Result 7130 states and 12346 transitions. [2018-11-07 20:21:12,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:21:12,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2018-11-07 20:21:12,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:21:12,339 INFO L225 Difference]: With dead ends: 7130 [2018-11-07 20:21:12,340 INFO L226 Difference]: Without dead ends: 4723 [2018-11-07 20:21:12,348 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:21:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-11-07 20:21:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4720. [2018-11-07 20:21:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2018-11-07 20:21:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6479 transitions. [2018-11-07 20:21:12,460 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6479 transitions. Word has length 114 [2018-11-07 20:21:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:21:12,461 INFO L480 AbstractCegarLoop]: Abstraction has 4720 states and 6479 transitions. [2018-11-07 20:21:12,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:21:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6479 transitions. [2018-11-07 20:21:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-07 20:21:12,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:21:12,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:21:12,468 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:21:12,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash -105372228, now seen corresponding path program 1 times [2018-11-07 20:21:12,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:21:12,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:12,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:21:12,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:12,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:21:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:21:13,275 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-07 20:21:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 104 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:21:13,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:21:13,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:21:13,485 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-11-07 20:21:13,486 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], [2071], [2073], [2076], [2084], [2092], [2100], [2108], [2116], [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], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:21:13,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:21:13,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:21:13,665 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:21:13,948 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:21:13,948 INFO L272 AbstractInterpreter]: Visited 155 different actions 461 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 20:21:13,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:13,958 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:21:13,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:21:13,958 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:21:13,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:21:13,979 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:21:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:21:14,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:21:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 20:21:14,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:21:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 20:21:14,595 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:21:14,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-11-07 20:21:14,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:21:14,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:21:14,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:21:14,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:21:14,597 INFO L87 Difference]: Start difference. First operand 4720 states and 6479 transitions. Second operand 3 states. [2018-11-07 20:21:19,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:21:19,893 INFO L93 Difference]: Finished difference Result 9469 states and 14833 transitions. [2018-11-07 20:21:19,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:21:19,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-11-07 20:21:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:21:19,933 INFO L225 Difference]: With dead ends: 9469 [2018-11-07 20:21:19,933 INFO L226 Difference]: Without dead ends: 7062 [2018-11-07 20:21:19,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 520 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:21:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2018-11-07 20:21:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 7062. [2018-11-07 20:21:20,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2018-11-07 20:21:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 9466 transitions. [2018-11-07 20:21:20,748 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 9466 transitions. Word has length 260 [2018-11-07 20:21:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:21:20,750 INFO L480 AbstractCegarLoop]: Abstraction has 7062 states and 9466 transitions. [2018-11-07 20:21:20,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:21:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 9466 transitions. [2018-11-07 20:21:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-07 20:21:20,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:21:20,759 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:21:20,759 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:21:20,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash 46370913, now seen corresponding path program 1 times [2018-11-07 20:21:20,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:21:20,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:20,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:21:20,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:21:20,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:21:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:21:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:21:21,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:21:21,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:21:21,267 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-07 20:21:21,267 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], [2071], [2073], [2076], [2084], [2092], [2100], [2108], [2116], [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], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:21:21,272 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:21:21,273 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:21:21,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:21:21,784 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:21:21,784 INFO L272 AbstractInterpreter]: Visited 154 different actions 302 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:21:21,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:21:21,820 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:21:22,440 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.39% of their original sizes. [2018-11-07 20:21:22,440 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:21:24,948 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-07 20:21:24,948 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:21:24,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:21:24,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 20:21:24,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:21:24,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:21:24,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:21:24,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:21:24,950 INFO L87 Difference]: Start difference. First operand 7062 states and 9466 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 20:23:03,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:23:03,483 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:23:03,488 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:23:03,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:23:03 BoogieIcfgContainer [2018-11-07 20:23:03,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:23:03,489 INFO L168 Benchmark]: Toolchain (without parser) took 206704.67 ms. Allocated memory was 1.5 GB in the beginning and 7.0 GB in the end (delta: 5.5 GB). Free memory was 1.4 GB in the beginning and 4.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,490 INFO L168 Benchmark]: CDTParser took 0.19 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 20:23:03,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2154.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 337.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,493 INFO L168 Benchmark]: Boogie Preprocessor took 261.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,493 INFO L168 Benchmark]: RCFGBuilder took 9862.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 155.7 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -162.8 MB). Peak memory consumption was 670.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,494 INFO L168 Benchmark]: TraceAbstraction took 194083.52 ms. Allocated memory was 2.5 GB in the beginning and 7.0 GB in the end (delta: 4.5 GB). Free memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:23:03,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2154.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 337.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9862.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 155.7 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -162.8 MB). Peak memory consumption was 670.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194083.52 ms. Allocated memory was 2.5 GB in the beginning and 7.0 GB in the end (delta: 4.5 GB). Free memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (7062states) and FLOYD_HOARE automaton (currently 20 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (10832 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 194.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 183.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2731 SDtfs, 12560 SDslu, 1367 SDs, 0 SdLazy, 30798 SolverSat, 4493 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 939 GetRequests, 828 SyntacticMatches, 47 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7062occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.9s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.997077836295111 AbsIntWeakeningRatio, 0.128686327077748 AbsIntAvgWeakeningVarsNumRemoved, 18.27077747989276 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1045 NumberOfCodeBlocks, 1045 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1298 ConstructedInterpolants, 0 QuantifiedInterpolants, 1329079 SizeOfPredicates, 2 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 563/615 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown