java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:04:37,622 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:04:37,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:04:37,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:04:37,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:04:37,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:04:37,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:04:37,650 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:04:37,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:04:37,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:04:37,654 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:04:37,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:04:37,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:04:37,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:04:37,658 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:04:37,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:04:37,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:04:37,662 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:04:37,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:04:37,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:04:37,666 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:04:37,667 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:04:37,672 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:04:37,672 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:04:37,672 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:04:37,673 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:04:37,674 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:04:37,675 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:04:37,676 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:04:37,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:04:37,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:04:37,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:04:37,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:04:37,678 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:04:37,679 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:04:37,680 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:04:37,680 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:04:37,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:04:37,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:04:37,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:04:37,706 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:04:37,706 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:04:37,707 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:04:37,707 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:04:37,707 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:04:37,707 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:04:37,708 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:04:37,708 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:04:37,708 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:04:37,709 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:04:37,709 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:04:37,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:04:37,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:04:37,710 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:04:37,710 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:04:37,710 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:04:37,710 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:04:37,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:04:37,711 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:04:37,711 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:04:37,711 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:04:37,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:04:37,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:04:37,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:04:37,712 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:04:37,712 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:04:37,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:04:37,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:04:37,713 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:04:37,713 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:04:37,713 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:04:37,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:04:37,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:04:37,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:04:37,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:04:37,781 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:04:37,782 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-11-07 04:04:37,849 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669f3f08c/746d63ba79164b518e97d3087ab41e67/FLAG6c458781e [2018-11-07 04:04:38,627 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:04:38,629 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-11-07 04:04:38,664 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669f3f08c/746d63ba79164b518e97d3087ab41e67/FLAG6c458781e [2018-11-07 04:04:38,684 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669f3f08c/746d63ba79164b518e97d3087ab41e67 [2018-11-07 04:04:38,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:04:38,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:04:38,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:04:38,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:04:38,709 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:04:38,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:38" (1/1) ... [2018-11-07 04:04:38,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627d1230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:38, skipping insertion in model container [2018-11-07 04:04:38,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:04:38" (1/1) ... [2018-11-07 04:04:38,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:04:38,883 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:04:40,027 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:04:40,031 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:04:40,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:04:40,561 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:04:40,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40 WrapperNode [2018-11-07 04:04:40,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:04:40,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:04:40,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:04:40,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:04:40,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:04:40,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:04:40,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:04:40,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:04:40,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:40,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:41,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:41,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (1/1) ... [2018-11-07 04:04:41,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:04:41,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:04:41,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:04:41,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:04:41,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (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 04:04:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:04:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:04:41,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:04:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:04:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:04:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:04:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:04:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:04:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:04:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:04:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:04:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:04:41,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:04:48,560 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:04:48,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:48 BoogieIcfgContainer [2018-11-07 04:04:48,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:04:48,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:04:48,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:04:48,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:04:48,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:04:38" (1/3) ... [2018-11-07 04:04:48,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6306b603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:48, skipping insertion in model container [2018-11-07 04:04:48,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:04:40" (2/3) ... [2018-11-07 04:04:48,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6306b603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:04:48, skipping insertion in model container [2018-11-07 04:04:48,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:04:48" (3/3) ... [2018-11-07 04:04:48,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label18_true-unreach-call.c [2018-11-07 04:04:48,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:04:48,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:04:48,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:04:48,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:04:48,669 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:04:48,669 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:04:48,669 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:04:48,669 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:04:48,670 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:04:48,670 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:04:48,670 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:04:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 04:04:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 04:04:48,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:04:48,724 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:04:48,726 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:04:48,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:04:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash -502294996, now seen corresponding path program 1 times [2018-11-07 04:04:48,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:04:48,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:04:48,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:04:48,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:04:48,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:04:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:04:49,312 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 04:04:49,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:04:49,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:04:49,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:04:49,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:04:49,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:04:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:04:49,345 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 04:04:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:04:55,888 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 04:04:55,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:04:55,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-11-07 04:04:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:04:55,919 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 04:04:55,919 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 04:04:55,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:04:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 04:04:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 04:04:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 04:04:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 04:04:56,086 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 64 [2018-11-07 04:04:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:04:56,087 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 04:04:56,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:04:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 04:04:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 04:04:56,096 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:04:56,097 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:56,097 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:04:56,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:04:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1983682478, now seen corresponding path program 1 times [2018-11-07 04:04:56,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:04:56,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:04:56,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:04:56,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:04:56,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:04:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:04:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:04:56,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:04:56,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:04:56,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:04:56,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:04:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:04:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:04:56,439 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 04:05:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:05:06,056 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-11-07 04:05:06,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:05:06,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 04:05:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:05:06,079 INFO L225 Difference]: With dead ends: 4416 [2018-11-07 04:05:06,080 INFO L226 Difference]: Without dead ends: 2948 [2018-11-07 04:05:06,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:05:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-11-07 04:05:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-11-07 04:05:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-11-07 04:05:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-11-07 04:05:06,173 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 154 [2018-11-07 04:05:06,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:05:06,173 INFO L480 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-11-07 04:05:06,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:05:06,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-11-07 04:05:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 04:05:06,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:05:06,187 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:05:06,187 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:05:06,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:05:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 119738927, now seen corresponding path program 1 times [2018-11-07 04:05:06,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:05:06,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:06,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:05:06,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:06,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:05:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:05:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:05:06,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:05:06,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:05:06,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:05:06,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:05:06,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:05:06,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:05:06,390 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-11-07 04:05:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:05:16,939 INFO L93 Difference]: Finished difference Result 11793 states and 22898 transitions. [2018-11-07 04:05:16,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:05:16,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-11-07 04:05:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:05:17,004 INFO L225 Difference]: With dead ends: 11793 [2018-11-07 04:05:17,004 INFO L226 Difference]: Without dead ends: 8877 [2018-11-07 04:05:17,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:05:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2018-11-07 04:05:17,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 8802. [2018-11-07 04:05:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8802 states. [2018-11-07 04:05:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 14072 transitions. [2018-11-07 04:05:17,315 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 14072 transitions. Word has length 155 [2018-11-07 04:05:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:05:17,315 INFO L480 AbstractCegarLoop]: Abstraction has 8802 states and 14072 transitions. [2018-11-07 04:05:17,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:05:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 14072 transitions. [2018-11-07 04:05:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 04:05:17,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:05:17,323 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 04:05:17,323 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:05:17,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:05:17,324 INFO L82 PathProgramCache]: Analyzing trace with hash -720272287, now seen corresponding path program 1 times [2018-11-07 04:05:17,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:05:17,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:17,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:05:17,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:17,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:05:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:05:17,602 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:05:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:05:17,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:05:17,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:05:17,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 04:05:17,970 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:05:18,064 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:05:18,064 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:05:20,090 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:05:20,091 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 04:05:20,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:05:20,181 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:05:21,979 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.33% of their original sizes. [2018-11-07 04:05:21,979 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:05:22,296 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 04:05:22,297 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:05:22,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:05:22,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 04:05:22,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:05:22,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:05:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:05:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:05:22,300 INFO L87 Difference]: Start difference. First operand 8802 states and 14072 transitions. Second operand 7 states. [2018-11-07 04:05:25,241 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:06:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:06:46,455 INFO L93 Difference]: Finished difference Result 18303 states and 29044 transitions. [2018-11-07 04:06:46,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:06:46,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-11-07 04:06:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:06:46,499 INFO L225 Difference]: With dead ends: 18303 [2018-11-07 04:06:46,499 INFO L226 Difference]: Without dead ends: 9507 [2018-11-07 04:06:46,526 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:06:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9507 states. [2018-11-07 04:06:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9507 to 9505. [2018-11-07 04:06:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9505 states. [2018-11-07 04:06:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9505 states to 9505 states and 14784 transitions. [2018-11-07 04:06:46,772 INFO L78 Accepts]: Start accepts. Automaton has 9505 states and 14784 transitions. Word has length 225 [2018-11-07 04:06:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:06:46,773 INFO L480 AbstractCegarLoop]: Abstraction has 9505 states and 14784 transitions. [2018-11-07 04:06:46,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 04:06:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9505 states and 14784 transitions. [2018-11-07 04:06:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-07 04:06:46,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:06:46,787 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:06:46,788 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:06:46,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:06:46,788 INFO L82 PathProgramCache]: Analyzing trace with hash -572310658, now seen corresponding path program 1 times [2018-11-07 04:06:46,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:06:46,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:46,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:06:46,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:46,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:06:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:06:47,309 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:06:47,741 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 04:06:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 230 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:06:48,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:06:48,225 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:06:48,226 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-07 04:06:48,226 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [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], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:06:48,240 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:06:48,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:07:01,052 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:07:01,052 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 04:07:01,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:01,061 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:07:06,573 INFO L227 lantSequenceWeakener]: Weakened 156 states. On average, predicates are now at 78.53% of their original sizes. [2018-11-07 04:07:06,573 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:07:33,178 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-07 04:07:33,178 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:07:33,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:07:33,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 04:07:33,179 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:07:33,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 04:07:33,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 04:07:33,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 04:07:33,182 INFO L87 Difference]: Start difference. First operand 9505 states and 14784 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 04:08:28,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 04:08:28,216 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:08:28,222 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:08:28,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:08:28 BoogieIcfgContainer [2018-11-07 04:08:28,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:08:28,225 INFO L168 Benchmark]: Toolchain (without parser) took 229526.26 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 498.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,226 INFO L168 Benchmark]: CDTParser took 0.21 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 04:08:28,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1859.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 289.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -958.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,230 INFO L168 Benchmark]: Boogie Preprocessor took 201.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,231 INFO L168 Benchmark]: RCFGBuilder took 7506.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,232 INFO L168 Benchmark]: TraceAbstraction took 219661.09 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:08:28,238 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1859.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 289.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -958.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7506.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 511.5 MB). Peak memory consumption was 511.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219661.09 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (9505states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (173 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 166.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1171 SDtfs, 8385 SDslu, 659 SDs, 0 SdLazy, 15442 SolverSat, 4295 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 666 GetRequests, 589 SyntacticMatches, 37 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 26.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9505occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961514321579368 AbsIntWeakeningRatio, 0.09133858267716535 AbsIntAvgWeakeningVarsNumRemoved, 331.3748031496063 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 103 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 1010 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1005 ConstructedInterpolants, 0 QuantifiedInterpolants, 1478553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 468/700 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown