java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:17:07,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:17:07,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:17:07,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:17:07,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:17:07,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:17:07,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:17:07,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:17:07,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:17:07,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:17:07,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:17:07,761 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:17:07,764 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:17:07,767 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:17:07,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:17:07,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:17:07,770 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:17:07,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:17:07,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:17:07,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:17:07,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:17:07,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:17:07,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:17:07,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:17:07,780 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:17:07,781 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:17:07,782 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:17:07,783 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:17:07,784 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:17:07,785 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:17:07,785 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:17:07,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:17:07,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:17:07,786 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:17:07,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:17:07,788 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:17:07,788 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:17:07,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:17:07,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:17:07,815 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:17:07,815 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:17:07,815 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:17:07,815 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:17:07,816 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:17:07,816 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:17:07,817 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:17:07,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:17:07,819 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:17:07,819 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:17:07,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:17:07,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:17:07,820 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:17:07,820 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:17:07,820 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:17:07,820 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:17:07,820 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:17:07,820 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:17:07,821 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:17:07,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:17:07,821 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:17:07,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:17:07,822 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:17:07,822 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:17:07,822 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:17:07,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:17:07,822 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:17:07,823 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:17:07,823 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:17:07,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:17:07,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:17:07,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:17:07,899 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:17:07,900 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:17:07,900 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-27 08:17:07,964 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0c1c243e/9c745fa9b1854cacbbba499eeb7a92ec/FLAG5b9d8523b [2018-10-27 08:17:08,594 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:17:08,596 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-27 08:17:08,619 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0c1c243e/9c745fa9b1854cacbbba499eeb7a92ec/FLAG5b9d8523b [2018-10-27 08:17:08,637 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0c1c243e/9c745fa9b1854cacbbba499eeb7a92ec [2018-10-27 08:17:08,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:17:08,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:17:08,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:17:08,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:17:08,661 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:17:08,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:17:08" (1/1) ... [2018-10-27 08:17:08,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea74f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:08, skipping insertion in model container [2018-10-27 08:17:08,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:17:08" (1/1) ... [2018-10-27 08:17:08,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:17:08,782 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:17:09,558 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:17:09,562 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:17:09,844 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:17:09,864 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:17:09,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09 WrapperNode [2018-10-27 08:17:09,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:17:09,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:17:09,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:17:09,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:17:09,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:09,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:17:10,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:17:10,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:17:10,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:17:10,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... [2018-10-27 08:17:10,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:17:10,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:17:10,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:17:10,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:17:10,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:17:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:17:10,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:17:10,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:17:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:17:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:17:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:17:10,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:17:10,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:17:10,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:17:10,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:17:17,779 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:17:17,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:17:17 BoogieIcfgContainer [2018-10-27 08:17:17,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:17:17,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:17:17,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:17:17,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:17:17,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:17:08" (1/3) ... [2018-10-27 08:17:17,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d820b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:17:17, skipping insertion in model container [2018-10-27 08:17:17,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:17:09" (2/3) ... [2018-10-27 08:17:17,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d820b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:17:17, skipping insertion in model container [2018-10-27 08:17:17,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:17:17" (3/3) ... [2018-10-27 08:17:17,789 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-10-27 08:17:17,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:17:17,808 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:17:17,826 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:17:17,867 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:17:17,867 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:17:17,867 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:17:17,867 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:17:17,867 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:17:17,868 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:17:17,868 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:17:17,868 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:17:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:17:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 08:17:17,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:17:17,910 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] [2018-10-27 08:17:17,912 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:17:17,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1926433044, now seen corresponding path program 1 times [2018-10-27 08:17:17,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:17:17,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:17,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:17:17,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:17,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:17:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:17:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:17:18,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:17:18,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:17:18,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:17:18,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:17:18,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:17:18,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:17:18,528 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:17:27,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:17:27,394 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-27 08:17:27,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:17:27,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-27 08:17:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:17:27,424 INFO L225 Difference]: With dead ends: 1550 [2018-10-27 08:17:27,424 INFO L226 Difference]: Without dead ends: 1106 [2018-10-27 08:17:27,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:17:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-27 08:17:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-27 08:17:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-27 08:17:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-27 08:17:27,584 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 48 [2018-10-27 08:17:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:17:27,585 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-27 08:17:27,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:17:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-27 08:17:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 08:17:27,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:17:27,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:17:27,594 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:17:27,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:27,594 INFO L82 PathProgramCache]: Analyzing trace with hash -45753950, now seen corresponding path program 1 times [2018-10-27 08:17:27,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:17:27,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:27,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:17:27,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:27,596 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:17:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:17:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:17:27,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:17:27,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:17:27,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:17:27,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:17:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:17:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:17:27,911 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-27 08:17:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:17:35,214 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-27 08:17:35,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:17:35,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-27 08:17:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:17:35,232 INFO L225 Difference]: With dead ends: 2245 [2018-10-27 08:17:35,232 INFO L226 Difference]: Without dead ends: 1489 [2018-10-27 08:17:35,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:17:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-27 08:17:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-27 08:17:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-27 08:17:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-27 08:17:35,323 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 121 [2018-10-27 08:17:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:17:35,324 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-27 08:17:35,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:17:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-27 08:17:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 08:17:35,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:17:35,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:17:35,331 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:17:35,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:35,332 INFO L82 PathProgramCache]: Analyzing trace with hash 935470738, now seen corresponding path program 1 times [2018-10-27 08:17:35,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:17:35,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:35,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:17:35,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:35,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:17:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:17:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:17:35,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:17:35,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:17:35,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:17:35,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:17:35,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:17:35,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:17:35,531 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-27 08:17:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:17:41,635 INFO L93 Difference]: Finished difference Result 5394 states and 8283 transitions. [2018-10-27 08:17:41,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:17:41,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-27 08:17:41,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:17:41,667 INFO L225 Difference]: With dead ends: 5394 [2018-10-27 08:17:41,668 INFO L226 Difference]: Without dead ends: 3943 [2018-10-27 08:17:41,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:17:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2018-10-27 08:17:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2018-10-27 08:17:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-10-27 08:17:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5430 transitions. [2018-10-27 08:17:41,795 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5430 transitions. Word has length 129 [2018-10-27 08:17:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:17:41,796 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 5430 transitions. [2018-10-27 08:17:41,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:17:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5430 transitions. [2018-10-27 08:17:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 08:17:41,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:17:41,805 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, 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] [2018-10-27 08:17:41,805 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:17:41,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash 107667736, now seen corresponding path program 1 times [2018-10-27 08:17:41,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:17:41,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:41,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:17:41,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:17:41,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:17:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:17:42,058 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:17:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:17:42,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:17:42,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:17:42,133 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-10-27 08:17:42,135 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:17:42,178 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:17:42,178 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:17:42,840 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:17:42,843 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:17:42,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:17:42,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:17:43,502 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 77.98% of their original sizes. [2018-10-27 08:17:43,503 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:17:43,737 INFO L415 sIntCurrentIteration]: We unified 214 AI predicates to 214 [2018-10-27 08:17:43,737 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:17:43,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:17:43,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:17:43,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:17:43,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:17:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:17:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:17:43,740 INFO L87 Difference]: Start difference. First operand 3943 states and 5430 transitions. Second operand 6 states. [2018-10-27 08:18:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:45,474 INFO L93 Difference]: Finished difference Result 8190 states and 11236 transitions. [2018-10-27 08:18:45,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:18:45,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2018-10-27 08:18:45,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:45,496 INFO L225 Difference]: With dead ends: 8190 [2018-10-27 08:18:45,496 INFO L226 Difference]: Without dead ends: 4253 [2018-10-27 08:18:45,514 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:18:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2018-10-27 08:18:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4251. [2018-10-27 08:18:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2018-10-27 08:18:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 5746 transitions. [2018-10-27 08:18:45,626 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 5746 transitions. Word has length 215 [2018-10-27 08:18:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:45,626 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 5746 transitions. [2018-10-27 08:18:45,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 5746 transitions. [2018-10-27 08:18:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-27 08:18:45,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:45,635 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:45,636 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:45,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:45,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2018-10-27 08:18:45,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:45,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:45,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:45,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:45,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:45,998 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:18:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 08:18:46,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:18:46,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:18:46,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-27 08:18:46,660 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:18:46,666 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:18:46,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:18:46,942 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:18:46,943 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:18:46,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:46,951 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:18:47,248 INFO L227 lantSequenceWeakener]: Weakened 306 states. On average, predicates are now at 83.84% of their original sizes. [2018-10-27 08:18:47,248 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:18:47,336 INFO L415 sIntCurrentIteration]: We unified 310 AI predicates to 310 [2018-10-27 08:18:47,336 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:18:47,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:18:47,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:18:47,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:47,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:18:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:18:47,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:18:47,338 INFO L87 Difference]: Start difference. First operand 4251 states and 5746 transitions. Second operand 9 states. [2018-10-27 08:19:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:24,538 INFO L93 Difference]: Finished difference Result 8508 states and 11563 transitions. [2018-10-27 08:19:24,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:19:24,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2018-10-27 08:19:24,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:24,560 INFO L225 Difference]: With dead ends: 8508 [2018-10-27 08:19:24,560 INFO L226 Difference]: Without dead ends: 4571 [2018-10-27 08:19:24,577 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 316 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:19:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2018-10-27 08:19:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4568. [2018-10-27 08:19:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2018-10-27 08:19:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 6085 transitions. [2018-10-27 08:19:24,680 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 6085 transitions. Word has length 311 [2018-10-27 08:19:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:24,680 INFO L481 AbstractCegarLoop]: Abstraction has 4568 states and 6085 transitions. [2018-10-27 08:19:24,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:19:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 6085 transitions. [2018-10-27 08:19:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-10-27 08:19:24,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:24,698 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:24,699 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:24,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:24,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1200518730, now seen corresponding path program 1 times [2018-10-27 08:19:24,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:24,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:24,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:24,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:24,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 211 proven. 79 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 08:19:25,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:25,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:19:25,454 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 491 with the following transitions: [2018-10-27 08:19:25,455 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:19:25,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:19:25,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:19:26,366 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:19:26,367 INFO L272 AbstractInterpreter]: Visited 287 different actions 1143 times. Merged at 8 different actions 32 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:19:26,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:26,407 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:19:26,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:26,407 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:19:26,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:26,425 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:19:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:26,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:19:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-27 08:19:27,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:19:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 211 proven. 79 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 08:19:28,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:19:28,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:19:28,033 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:19:28,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:19:28,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:19:28,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:19:28,035 INFO L87 Difference]: Start difference. First operand 4568 states and 6085 transitions. Second operand 9 states. [2018-10-27 08:19:31,604 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-10-27 08:19:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:39,701 INFO L93 Difference]: Finished difference Result 13755 states and 20882 transitions. [2018-10-27 08:19:39,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 08:19:39,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 490 [2018-10-27 08:19:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:39,789 INFO L225 Difference]: With dead ends: 13755 [2018-10-27 08:19:39,789 INFO L226 Difference]: Without dead ends: 9818 [2018-10-27 08:19:39,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 989 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:19:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2018-10-27 08:19:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 9779. [2018-10-27 08:19:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9779 states. [2018-10-27 08:19:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 13606 transitions. [2018-10-27 08:19:40,247 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 13606 transitions. Word has length 490 [2018-10-27 08:19:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:40,249 INFO L481 AbstractCegarLoop]: Abstraction has 9779 states and 13606 transitions. [2018-10-27 08:19:40,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:19:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 13606 transitions. [2018-10-27 08:19:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-10-27 08:19:40,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:40,288 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:40,288 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:40,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1888704822, now seen corresponding path program 1 times [2018-10-27 08:19:40,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:40,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:40,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:40,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:40,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 345 proven. 79 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-10-27 08:19:41,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:41,189 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:19:41,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 513 with the following transitions: [2018-10-27 08:19:41,190 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:19:41,205 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:19:41,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:19:42,435 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:19:42,436 INFO L272 AbstractInterpreter]: Visited 214 different actions 1049 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:19:42,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:42,478 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:19:42,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:42,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:19:42,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:42,489 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:19:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:42,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:19:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 533 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-27 08:19:42,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:19:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 345 proven. 79 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-10-27 08:19:43,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:19:43,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:19:43,509 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:19:43,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:19:43,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:19:43,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:19:43,510 INFO L87 Difference]: Start difference. First operand 9779 states and 13606 transitions. Second operand 9 states. [2018-10-27 08:19:53,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:53,500 INFO L93 Difference]: Finished difference Result 20388 states and 30682 transitions. [2018-10-27 08:19:53,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:19:53,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 512 [2018-10-27 08:19:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:53,583 INFO L225 Difference]: With dead ends: 20388 [2018-10-27 08:19:53,584 INFO L226 Difference]: Without dead ends: 11240 [2018-10-27 08:19:53,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1030 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-27 08:19:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2018-10-27 08:19:53,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 11211. [2018-10-27 08:19:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11211 states. [2018-10-27 08:19:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 15537 transitions. [2018-10-27 08:19:54,053 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 15537 transitions. Word has length 512 [2018-10-27 08:19:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:54,054 INFO L481 AbstractCegarLoop]: Abstraction has 11211 states and 15537 transitions. [2018-10-27 08:19:54,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:19:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 15537 transitions. [2018-10-27 08:19:54,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-27 08:19:54,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:54,078 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:19:54,079 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:54,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:54,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1674586428, now seen corresponding path program 1 times [2018-10-27 08:19:54,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:54,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:54,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:54,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:54,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 347 proven. 39 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-27 08:19:54,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:54,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:19:54,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-10-27 08:19:54,723 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:19:54,726 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:19:54,727 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:19:55,223 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:19:55,224 INFO L272 AbstractInterpreter]: Visited 211 different actions 835 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:19:55,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:55,243 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:19:55,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:55,243 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:19:55,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:55,252 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:19:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:55,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:19:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2018-10-27 08:19:55,736 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:19:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2018-10-27 08:19:55,920 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:19:55,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-10-27 08:19:55,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:55,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:19:55,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:19:55,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:19:55,922 INFO L87 Difference]: Start difference. First operand 11211 states and 15537 transitions. Second operand 3 states. [2018-10-27 08:19:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:59,180 INFO L93 Difference]: Finished difference Result 27244 states and 39656 transitions. [2018-10-27 08:19:59,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:19:59,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 514 [2018-10-27 08:19:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:59,285 INFO L225 Difference]: With dead ends: 27244 [2018-10-27 08:19:59,285 INFO L226 Difference]: Without dead ends: 16347 [2018-10-27 08:19:59,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1028 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:19:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16347 states. [2018-10-27 08:19:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16347 to 16347. [2018-10-27 08:19:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16347 states. [2018-10-27 08:19:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 21853 transitions. [2018-10-27 08:19:59,897 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 21853 transitions. Word has length 514 [2018-10-27 08:19:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:59,898 INFO L481 AbstractCegarLoop]: Abstraction has 16347 states and 21853 transitions. [2018-10-27 08:19:59,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:19:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 21853 transitions. [2018-10-27 08:19:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-10-27 08:19:59,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:59,924 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:19:59,924 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:59,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:59,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1372407109, now seen corresponding path program 1 times [2018-10-27 08:19:59,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:59,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:59,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:59,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:59,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-10-27 08:20:00,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:00,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:20:00,451 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:00,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:20:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:20:00,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:20:00,453 INFO L87 Difference]: Start difference. First operand 16347 states and 21853 transitions. Second operand 3 states. [2018-10-27 08:20:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:04,643 INFO L93 Difference]: Finished difference Result 36245 states and 52404 transitions. [2018-10-27 08:20:04,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:20:04,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 552 [2018-10-27 08:20:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:04,737 INFO L225 Difference]: With dead ends: 36245 [2018-10-27 08:20:04,738 INFO L226 Difference]: Without dead ends: 20837 [2018-10-27 08:20:04,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:20:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20837 states. [2018-10-27 08:20:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20837 to 20834. [2018-10-27 08:20:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20834 states. [2018-10-27 08:20:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20834 states to 20834 states and 29128 transitions. [2018-10-27 08:20:05,466 INFO L78 Accepts]: Start accepts. Automaton has 20834 states and 29128 transitions. Word has length 552 [2018-10-27 08:20:05,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:05,467 INFO L481 AbstractCegarLoop]: Abstraction has 20834 states and 29128 transitions. [2018-10-27 08:20:05,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:20:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 20834 states and 29128 transitions. [2018-10-27 08:20:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-10-27 08:20:05,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:05,498 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-27 08:20:05,499 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:05,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1206449371, now seen corresponding path program 1 times [2018-10-27 08:20:05,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:05,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:05,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-27 08:20:06,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:06,313 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:06,314 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 556 with the following transitions: [2018-10-27 08:20:06,314 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:20:06,318 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:06,318 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:07,845 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:20:07,845 INFO L272 AbstractInterpreter]: Visited 214 different actions 1269 times. Merged at 9 different actions 49 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:20:07,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:07,855 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:20:07,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:07,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:20:07,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:07,863 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:20:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:08,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:20:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-27 08:20:08,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:20:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-27 08:20:09,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:20:09,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:20:09,851 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:20:09,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:20:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:20:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:20:09,853 INFO L87 Difference]: Start difference. First operand 20834 states and 29128 transitions. Second operand 9 states. [2018-10-27 08:20:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:29,063 INFO L93 Difference]: Finished difference Result 56482 states and 83039 transitions. [2018-10-27 08:20:29,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-27 08:20:29,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 555 [2018-10-27 08:20:29,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:29,263 INFO L225 Difference]: With dead ends: 56482 [2018-10-27 08:20:29,264 INFO L226 Difference]: Without dead ends: 35962 [2018-10-27 08:20:29,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 1131 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=314, Invalid=1168, Unknown=0, NotChecked=0, Total=1482 [2018-10-27 08:20:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35962 states. [2018-10-27 08:20:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35962 to 35814. [2018-10-27 08:20:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35814 states. [2018-10-27 08:20:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35814 states to 35814 states and 48580 transitions. [2018-10-27 08:20:30,905 INFO L78 Accepts]: Start accepts. Automaton has 35814 states and 48580 transitions. Word has length 555 [2018-10-27 08:20:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:30,906 INFO L481 AbstractCegarLoop]: Abstraction has 35814 states and 48580 transitions. [2018-10-27 08:20:30,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:20:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 35814 states and 48580 transitions. [2018-10-27 08:20:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-10-27 08:20:30,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:30,936 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:20:30,937 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:30,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:30,938 INFO L82 PathProgramCache]: Analyzing trace with hash 474931769, now seen corresponding path program 1 times [2018-10-27 08:20:30,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:30,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:30,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:30,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:30,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 268 proven. 447 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-27 08:20:32,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:32,211 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:32,211 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 633 with the following transitions: [2018-10-27 08:20:32,212 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1210], [1214], [1217], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:20:32,216 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:32,216 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:35,690 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:20:35,690 INFO L272 AbstractInterpreter]: Visited 214 different actions 1062 times. Merged at 9 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:20:35,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:35,699 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:20:35,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:35,699 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:20:35,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:35,707 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:20:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:35,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:20:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 600 proven. 41 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-27 08:20:36,663 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:20:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 179 proven. 536 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-27 08:20:37,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:20:37,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-10-27 08:20:37,853 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:20:37,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 08:20:37,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 08:20:37,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:20:37,855 INFO L87 Difference]: Start difference. First operand 35814 states and 48580 transitions. Second operand 13 states. Received shutdown request... [2018-10-27 08:20:56,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 08:20:56,214 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:20:56,220 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:20:56,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:20:56 BoogieIcfgContainer [2018-10-27 08:20:56,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:20:56,221 INFO L168 Benchmark]: Toolchain (without parser) took 227569.49 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -164.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 08:20:56,222 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 08:20:56,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1208.65 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:20:56,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 404.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -892.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:20:56,224 INFO L168 Benchmark]: Boogie Preprocessor took 211.29 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. [2018-10-27 08:20:56,225 INFO L168 Benchmark]: RCFGBuilder took 7298.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 317.3 MB). Peak memory consumption was 317.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:20:56,226 INFO L168 Benchmark]: TraceAbstraction took 218439.36 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 291.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 08:20:56,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1208.65 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 404.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -892.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.29 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 7298.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 317.3 MB). Peak memory consumption was 317.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218439.36 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 291.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (35814states) and FLOYD_HOARE automaton (currently 29 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (38608 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 218.3s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 189.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3364 SDtfs, 19372 SDslu, 3411 SDs, 0 SdLazy, 35597 SolverSat, 7471 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 6144 GetRequests, 5984 SyntacticMatches, 11 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35814occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.8s AbstIntTime, 7 AbstIntIterations, 2 AbstIntStrong, 0.9969532294698324 AbsIntWeakeningRatio, 0.11450381679389313 AbsIntAvgWeakeningVarsNumRemoved, 15.217557251908397 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 600 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 6782 NumberOfCodeBlocks, 6782 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 9464 ConstructedInterpolants, 0 QuantifiedInterpolants, 15960196 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3914 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 8831/10516 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown