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_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:11:09,897 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:11:09,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:11:09,923 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:11:09,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:11:09,925 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:11:09,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:11:09,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:11:09,934 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:11:09,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:11:09,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:11:09,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:11:09,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:11:09,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:11:09,944 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:11:09,944 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:11:09,945 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:11:09,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:11:09,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:11:09,960 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:11:09,961 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:11:09,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:11:09,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:11:09,971 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:11:09,972 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:11:09,973 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:11:09,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:11:09,974 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:11:09,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:11:09,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:11:09,980 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:11:09,981 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 08:11:09,986 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 08:11:10,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:11:10,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:11:10,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:11:10,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:11:10,008 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:11:10,008 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:11:10,009 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:11:10,009 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:11:10,009 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:11:10,009 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:11:10,009 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:11:10,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:11:10,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:11:10,010 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:11:10,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:11:10,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:11:10,011 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:11:10,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:11:10,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:11:10,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:11:10,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:11:10,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:11:10,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:11:10,014 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:11:10,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:11:10,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:11:10,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:11:10,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:11:10,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:11:10,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:11:10,016 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:11:10,016 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:11:10,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:11:10,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:11:10,017 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:11:10,018 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:11:10,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:11:10,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:11:10,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:11:10,107 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:11:10,107 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:11:10,108 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-10-27 08:11:10,177 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd7d86829/ab5196bf4a4a43dc8891231562ca2236/FLAG977a88e8e [2018-10-27 08:11:10,822 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:11:10,823 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-10-27 08:11:10,846 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd7d86829/ab5196bf4a4a43dc8891231562ca2236/FLAG977a88e8e [2018-10-27 08:11:10,864 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd7d86829/ab5196bf4a4a43dc8891231562ca2236 [2018-10-27 08:11:10,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:11:10,877 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:11:10,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:11:10,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:11:10,883 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:11:10,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:11:10" (1/1) ... [2018-10-27 08:11:10,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:10, skipping insertion in model container [2018-10-27 08:11:10,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:11:10" (1/1) ... [2018-10-27 08:11:10,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:11:10,990 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:11:11,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:11:11,823 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:11:12,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:11:12,152 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:11:12,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12 WrapperNode [2018-10-27 08:11:12,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:11:12,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:11:12,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:11:12,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:11:12,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:11:12,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:11:12,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:11:12,554 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:11:12,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (1/1) ... [2018-10-27 08:11:12,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:11:12,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:11:12,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:11:12,790 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:11:12,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (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 08:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:11:12,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:11:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:11:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:11:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:11:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:11:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:11:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:11:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:11:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:11:21,765 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:11:21,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:11:21 BoogieIcfgContainer [2018-10-27 08:11:21,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:11:21,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:11:21,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:11:21,776 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:11:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:11:10" (1/3) ... [2018-10-27 08:11:21,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efba6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:11:21, skipping insertion in model container [2018-10-27 08:11:21,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:11:12" (2/3) ... [2018-10-27 08:11:21,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efba6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:11:21, skipping insertion in model container [2018-10-27 08:11:21,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:11:21" (3/3) ... [2018-10-27 08:11:21,784 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17_true-unreach-call.c [2018-10-27 08:11:21,794 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:11:21,808 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:11:21,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:11:21,888 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:11:21,888 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:11:21,889 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:11:21,889 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:11:21,889 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:11:21,889 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:11:21,889 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:11:21,890 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:11:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:11:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 08:11:21,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:21,958 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:11:21,961 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:21,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash -466459612, now seen corresponding path program 1 times [2018-10-27 08:11:21,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:22,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:22,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:22,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:22,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:22,602 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 08:11:22,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:11:22,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:11:22,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:11:22,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:11:22,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:11:22,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:11:22,631 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:11:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:34,516 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-27 08:11:34,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:11:34,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-10-27 08:11:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:34,545 INFO L225 Difference]: With dead ends: 1514 [2018-10-27 08:11:34,545 INFO L226 Difference]: Without dead ends: 1070 [2018-10-27 08:11:34,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:11:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-27 08:11:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-27 08:11:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 08:11:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-27 08:11:34,692 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 70 [2018-10-27 08:11:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:34,693 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-27 08:11:34,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:11:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-27 08:11:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 08:11:34,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:34,703 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:11:34,703 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:34,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:34,704 INFO L82 PathProgramCache]: Analyzing trace with hash 608103471, now seen corresponding path program 1 times [2018-10-27 08:11:34,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:34,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:34,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:34,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:11:34,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:11:34,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:11:34,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:11:34,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:11:34,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:11:34,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:11:34,972 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-10-27 08:11:41,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:11:41,972 INFO L93 Difference]: Finished difference Result 3989 states and 6445 transitions. [2018-10-27 08:11:41,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:11:41,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-10-27 08:11:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:11:41,998 INFO L225 Difference]: With dead ends: 3989 [2018-10-27 08:11:41,998 INFO L226 Difference]: Without dead ends: 2927 [2018-10-27 08:11:42,009 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 08:11:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2018-10-27 08:11:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2925. [2018-10-27 08:11:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 08:11:42,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4174 transitions. [2018-10-27 08:11:42,141 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4174 transitions. Word has length 140 [2018-10-27 08:11:42,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:11:42,142 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4174 transitions. [2018-10-27 08:11:42,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:11:42,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4174 transitions. [2018-10-27 08:11:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-27 08:11:42,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:11:42,160 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:11:42,160 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:11:42,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:42,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1294046763, now seen corresponding path program 1 times [2018-10-27 08:11:42,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:11:42,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:42,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:11:42,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:11:42,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:11:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:11:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 08:11:43,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:11:43,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:11:43,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-27 08:11:43,031 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [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], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:11:43,089 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:11:43,093 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:11:44,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:11:44,305 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 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 08:11:44,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:11:44,350 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:11:44,962 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 84.42% of their original sizes. [2018-10-27 08:11:44,963 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:11:45,573 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-10-27 08:11:45,574 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:11:45,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:11:45,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:11:45,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:11:45,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:11:45,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:11:45,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:11:45,580 INFO L87 Difference]: Start difference. First operand 2925 states and 4174 transitions. Second operand 9 states. [2018-10-27 08:12:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:17,508 INFO L93 Difference]: Finished difference Result 6786 states and 9432 transitions. [2018-10-27 08:12:17,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:12:17,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-10-27 08:12:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:17,530 INFO L225 Difference]: With dead ends: 6786 [2018-10-27 08:12:17,531 INFO L226 Difference]: Without dead ends: 3867 [2018-10-27 08:12:17,543 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:12:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2018-10-27 08:12:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3864. [2018-10-27 08:12:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2018-10-27 08:12:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5171 transitions. [2018-10-27 08:12:17,636 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5171 transitions. Word has length 250 [2018-10-27 08:12:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:17,637 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 5171 transitions. [2018-10-27 08:12:17,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:12:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5171 transitions. [2018-10-27 08:12:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-27 08:12:17,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:17,651 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:12:17,652 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:17,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash -524817064, now seen corresponding path program 1 times [2018-10-27 08:12:17,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:17,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:17,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:17,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:17,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:12:18,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:18,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:18,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 451 with the following transitions: [2018-10-27 08:12:18,123 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [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], [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 08:12:18,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:18,133 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:18,687 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:12:18,687 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:12:18,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:18,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:12:18,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:18,694 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 08:12:18,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:18,705 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:12:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:18,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:12:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:12:19,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:12:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:12:20,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:12:20,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:12:20,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:12:20,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:12:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:12:20,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:12:20,037 INFO L87 Difference]: Start difference. First operand 3864 states and 5171 transitions. Second operand 9 states. [2018-10-27 08:12:22,288 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:12:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:12:51,529 INFO L93 Difference]: Finished difference Result 16832 states and 25135 transitions. [2018-10-27 08:12:51,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-27 08:12:51,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 450 [2018-10-27 08:12:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:12:51,630 INFO L225 Difference]: With dead ends: 16832 [2018-10-27 08:12:51,630 INFO L226 Difference]: Without dead ends: 13282 [2018-10-27 08:12:51,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 936 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=572, Invalid=2398, Unknown=0, NotChecked=0, Total=2970 [2018-10-27 08:12:51,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13282 states. [2018-10-27 08:12:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13282 to 13033. [2018-10-27 08:12:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13033 states. [2018-10-27 08:12:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13033 states to 13033 states and 16042 transitions. [2018-10-27 08:12:52,128 INFO L78 Accepts]: Start accepts. Automaton has 13033 states and 16042 transitions. Word has length 450 [2018-10-27 08:12:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:12:52,129 INFO L481 AbstractCegarLoop]: Abstraction has 13033 states and 16042 transitions. [2018-10-27 08:12:52,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:12:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13033 states and 16042 transitions. [2018-10-27 08:12:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-10-27 08:12:52,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:12:52,159 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:52,159 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:12:52,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:52,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1125948549, now seen corresponding path program 1 times [2018-10-27 08:12:52,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:12:52,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:52,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:52,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:12:52,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:12:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-27 08:12:53,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:53,179 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:12:53,179 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 500 with the following transitions: [2018-10-27 08:12:53,180 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [566], [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], [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 08:12:53,200 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:12:53,201 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:12:54,117 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:12:54,118 INFO L272 AbstractInterpreter]: Visited 285 different actions 849 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:12:54,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:12:54,124 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:12:54,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:12:54,124 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 08:12:54,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:12:54,133 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:12:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:12:54,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:12:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-27 08:12:54,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:12:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-27 08:12:55,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:12:55,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-10-27 08:12:55,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:12:55,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:12:55,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:12:55,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:12:55,740 INFO L87 Difference]: Start difference. First operand 13033 states and 16042 transitions. Second operand 5 states. [2018-10-27 08:13:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:01,087 INFO L93 Difference]: Finished difference Result 25946 states and 33550 transitions. [2018-10-27 08:13:01,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:13:01,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2018-10-27 08:13:01,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:01,176 INFO L225 Difference]: With dead ends: 25946 [2018-10-27 08:13:01,176 INFO L226 Difference]: Without dead ends: 14942 [2018-10-27 08:13:01,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 997 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:13:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14942 states. [2018-10-27 08:13:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14942 to 14886. [2018-10-27 08:13:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14886 states. [2018-10-27 08:13:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 17636 transitions. [2018-10-27 08:13:01,544 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 17636 transitions. Word has length 499 [2018-10-27 08:13:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:01,545 INFO L481 AbstractCegarLoop]: Abstraction has 14886 states and 17636 transitions. [2018-10-27 08:13:01,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:13:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 17636 transitions. [2018-10-27 08:13:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-10-27 08:13:01,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:01,578 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 08:13:01,578 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:01,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash 419516890, now seen corresponding path program 1 times [2018-10-27 08:13:01,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:01,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:01,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:01,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:01,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 08:13:02,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:02,598 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:02,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 516 with the following transitions: [2018-10-27 08:13:02,598 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [636], [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 08:13:02,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:02,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:06,523 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:13:06,523 INFO L272 AbstractInterpreter]: Visited 287 different actions 1137 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:13:06,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:06,532 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:13:06,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:06,532 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 08:13:06,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:06,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:06,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-10-27 08:13:07,011 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:13:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-10-27 08:13:07,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:13:07,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-10-27 08:13:07,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:07,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:13:07,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:13:07,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:13:07,216 INFO L87 Difference]: Start difference. First operand 14886 states and 17636 transitions. Second operand 3 states. [2018-10-27 08:13:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:11,107 INFO L93 Difference]: Finished difference Result 38954 states and 47837 transitions. [2018-10-27 08:13:11,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:13:11,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 515 [2018-10-27 08:13:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:11,193 INFO L225 Difference]: With dead ends: 38954 [2018-10-27 08:13:11,193 INFO L226 Difference]: Without dead ends: 24382 [2018-10-27 08:13:11,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:13:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24382 states. [2018-10-27 08:13:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24382 to 24034. [2018-10-27 08:13:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24034 states. [2018-10-27 08:13:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24034 states to 24034 states and 29169 transitions. [2018-10-27 08:13:11,720 INFO L78 Accepts]: Start accepts. Automaton has 24034 states and 29169 transitions. Word has length 515 [2018-10-27 08:13:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:11,722 INFO L481 AbstractCegarLoop]: Abstraction has 24034 states and 29169 transitions. [2018-10-27 08:13:11,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:13:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24034 states and 29169 transitions. [2018-10-27 08:13:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-10-27 08:13:11,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:11,765 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:11,766 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:11,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:11,766 INFO L82 PathProgramCache]: Analyzing trace with hash -200635057, now seen corresponding path program 1 times [2018-10-27 08:13:11,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:11,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:11,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:11,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:11,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:12,402 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 08:13:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-10-27 08:13:12,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:12,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:13:12,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:12,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:13:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:13:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:13:12,541 INFO L87 Difference]: Start difference. First operand 24034 states and 29169 transitions. Second operand 4 states. [2018-10-27 08:13:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:18,812 INFO L93 Difference]: Finished difference Result 57204 states and 71587 transitions. [2018-10-27 08:13:18,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:13:18,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 521 [2018-10-27 08:13:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:18,923 INFO L225 Difference]: With dead ends: 57204 [2018-10-27 08:13:18,923 INFO L226 Difference]: Without dead ends: 35477 [2018-10-27 08:13:19,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:13:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35477 states. [2018-10-27 08:13:19,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35477 to 35451. [2018-10-27 08:13:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35451 states. [2018-10-27 08:13:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35451 states to 35451 states and 41979 transitions. [2018-10-27 08:13:19,566 INFO L78 Accepts]: Start accepts. Automaton has 35451 states and 41979 transitions. Word has length 521 [2018-10-27 08:13:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:19,567 INFO L481 AbstractCegarLoop]: Abstraction has 35451 states and 41979 transitions. [2018-10-27 08:13:19,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:13:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35451 states and 41979 transitions. [2018-10-27 08:13:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-27 08:13:19,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:19,615 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:19,616 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:19,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:19,616 INFO L82 PathProgramCache]: Analyzing trace with hash -309560524, now seen corresponding path program 1 times [2018-10-27 08:13:19,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:19,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:19,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:19,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:19,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 292 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-27 08:13:20,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:20,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:20,714 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 530 with the following transitions: [2018-10-27 08:13:20,714 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [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], [692], [696], [707], [711], [714], [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 08:13:20,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:20,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:21,817 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:13:21,817 INFO L272 AbstractInterpreter]: Visited 285 different actions 1131 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:13:21,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:21,827 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:13:21,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:21,827 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 08:13:21,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:21,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:21,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 08:13:22,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:13:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 292 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-27 08:13:23,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:13:23,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:13:23,098 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:13:23,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:13:23,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:13:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:13:23,100 INFO L87 Difference]: Start difference. First operand 35451 states and 41979 transitions. Second operand 9 states. [2018-10-27 08:13:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:31,319 INFO L93 Difference]: Finished difference Result 74087 states and 94146 transitions. [2018-10-27 08:13:31,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 08:13:31,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 529 [2018-10-27 08:13:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:31,548 INFO L225 Difference]: With dead ends: 74087 [2018-10-27 08:13:31,549 INFO L226 Difference]: Without dead ends: 40943 [2018-10-27 08:13:31,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1067 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:13:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40943 states. [2018-10-27 08:13:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40943 to 39836. [2018-10-27 08:13:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39836 states. [2018-10-27 08:13:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39836 states to 39836 states and 49053 transitions. [2018-10-27 08:13:32,662 INFO L78 Accepts]: Start accepts. Automaton has 39836 states and 49053 transitions. Word has length 529 [2018-10-27 08:13:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:32,663 INFO L481 AbstractCegarLoop]: Abstraction has 39836 states and 49053 transitions. [2018-10-27 08:13:32,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:13:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 39836 states and 49053 transitions. [2018-10-27 08:13:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-10-27 08:13:32,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:32,694 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:32,695 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:32,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1921062102, now seen corresponding path program 1 times [2018-10-27 08:13:32,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:32,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:32,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:32,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:32,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 560 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-10-27 08:13:33,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:33,627 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:33,627 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-10-27 08:13:33,628 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [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], [857], [860], [864], [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 08:13:33,632 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:33,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:34,498 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:13:34,498 INFO L272 AbstractInterpreter]: Visited 214 different actions 1049 times. Merged at 9 different actions 34 times. Never widened. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:13:34,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:34,500 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:13:34,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:34,500 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 08:13:34,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:34,508 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:34,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2018-10-27 08:13:35,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:13:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2018-10-27 08:13:35,368 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:13:35,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-27 08:13:35,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:35,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:13:35,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:13:35,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:13:35,369 INFO L87 Difference]: Start difference. First operand 39836 states and 49053 transitions. Second operand 3 states. [2018-10-27 08:13:38,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:38,796 INFO L93 Difference]: Finished difference Result 77674 states and 96146 transitions. [2018-10-27 08:13:38,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:13:38,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 577 [2018-10-27 08:13:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:38,990 INFO L225 Difference]: With dead ends: 77674 [2018-10-27 08:13:38,991 INFO L226 Difference]: Without dead ends: 40145 [2018-10-27 08:13:39,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1159 GetRequests, 1153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:13:39,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40145 states. [2018-10-27 08:13:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40145 to 39832. [2018-10-27 08:13:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39832 states. [2018-10-27 08:13:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39832 states to 39832 states and 49023 transitions. [2018-10-27 08:13:40,064 INFO L78 Accepts]: Start accepts. Automaton has 39832 states and 49023 transitions. Word has length 577 [2018-10-27 08:13:40,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:40,065 INFO L481 AbstractCegarLoop]: Abstraction has 39832 states and 49023 transitions. [2018-10-27 08:13:40,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:13:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 39832 states and 49023 transitions. [2018-10-27 08:13:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-10-27 08:13:40,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:40,134 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, 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, 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 08:13:40,134 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:40,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1864949519, now seen corresponding path program 1 times [2018-10-27 08:13:40,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:40,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:40,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:40,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:40,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 356 proven. 447 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-27 08:13:41,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:41,870 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:13:41,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 655 with the following transitions: [2018-10-27 08:13:41,871 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [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 08:13:41,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:13:41,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:13:45,428 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:13:45,428 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 08:13:45,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:45,437 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:13:45,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:13:45,437 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:13:45,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:45,445 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:13:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:45,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:13:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 644 proven. 41 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-10-27 08:13:46,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:13:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 267 proven. 536 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-27 08:13:47,521 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:13:47,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-10-27 08:13:47,522 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:13:47,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 08:13:47,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 08:13:47,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:13:47,523 INFO L87 Difference]: Start difference. First operand 39832 states and 49023 transitions. Second operand 13 states. [2018-10-27 08:14:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:08,768 INFO L93 Difference]: Finished difference Result 97662 states and 122399 transitions. [2018-10-27 08:14:08,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 08:14:08,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 654 [2018-10-27 08:14:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:09,079 INFO L225 Difference]: With dead ends: 97662 [2018-10-27 08:14:09,080 INFO L226 Difference]: Without dead ends: 54133 [2018-10-27 08:14:09,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1324 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2018-10-27 08:14:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54133 states. [2018-10-27 08:14:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54133 to 52963. [2018-10-27 08:14:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52963 states. [2018-10-27 08:14:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52963 states to 52963 states and 64960 transitions. [2018-10-27 08:14:11,020 INFO L78 Accepts]: Start accepts. Automaton has 52963 states and 64960 transitions. Word has length 654 [2018-10-27 08:14:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:11,020 INFO L481 AbstractCegarLoop]: Abstraction has 52963 states and 64960 transitions. [2018-10-27 08:14:11,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-27 08:14:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 52963 states and 64960 transitions. [2018-10-27 08:14:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2018-10-27 08:14:11,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:11,130 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:14:11,131 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:11,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash -59415894, now seen corresponding path program 1 times [2018-10-27 08:14:11,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:11,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:11,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:11,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:11,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:14:12,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:12,305 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:14:12,306 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 708 with the following transitions: [2018-10-27 08:14:12,306 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], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [533], [535], [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], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [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], [1440], [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 08:14:12,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:14:12,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:14:17,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:14:17,018 INFO L272 AbstractInterpreter]: Visited 285 different actions 851 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:14:17,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:17,025 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:14:17,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:17,025 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:14:17,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:17,034 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:14:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:17,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:14:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:14:17,549 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:14:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:14:18,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:14:18,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:14:18,111 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:14:18,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:14:18,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:14:18,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:14:18,113 INFO L87 Difference]: Start difference. First operand 52963 states and 64960 transitions. Second operand 9 states. [2018-10-27 08:14:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:28,845 INFO L93 Difference]: Finished difference Result 114445 states and 150426 transitions. [2018-10-27 08:14:28,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:14:28,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 707 [2018-10-27 08:14:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:29,341 INFO L225 Difference]: With dead ends: 114445 [2018-10-27 08:14:29,342 INFO L226 Difference]: Without dead ends: 64071 [2018-10-27 08:14:29,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1420 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-27 08:14:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64071 states. [2018-10-27 08:14:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64071 to 64001. [2018-10-27 08:14:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64001 states. [2018-10-27 08:14:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64001 states to 64001 states and 82685 transitions. [2018-10-27 08:14:31,562 INFO L78 Accepts]: Start accepts. Automaton has 64001 states and 82685 transitions. Word has length 707 [2018-10-27 08:14:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:31,562 INFO L481 AbstractCegarLoop]: Abstraction has 64001 states and 82685 transitions. [2018-10-27 08:14:31,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:14:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 64001 states and 82685 transitions. [2018-10-27 08:14:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-10-27 08:14:31,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:31,625 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:14:31,625 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:31,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:31,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1427960617, now seen corresponding path program 1 times [2018-10-27 08:14:31,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:31,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:31,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:31,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:31,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-10-27 08:14:32,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:14:32,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:14:32,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:32,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:14:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:14:32,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:14:32,664 INFO L87 Difference]: Start difference. First operand 64001 states and 82685 transitions. Second operand 5 states. [2018-10-27 08:14:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:43,111 INFO L93 Difference]: Finished difference Result 157130 states and 205193 transitions. [2018-10-27 08:14:43,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 08:14:43,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 710 [2018-10-27 08:14:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:43,634 INFO L225 Difference]: With dead ends: 157130 [2018-10-27 08:14:43,634 INFO L226 Difference]: Without dead ends: 93443 [2018-10-27 08:14:44,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:14:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93443 states. [2018-10-27 08:14:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93443 to 92399. [2018-10-27 08:14:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92399 states. [2018-10-27 08:14:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92399 states to 92399 states and 118663 transitions. [2018-10-27 08:14:47,336 INFO L78 Accepts]: Start accepts. Automaton has 92399 states and 118663 transitions. Word has length 710 [2018-10-27 08:14:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:47,337 INFO L481 AbstractCegarLoop]: Abstraction has 92399 states and 118663 transitions. [2018-10-27 08:14:47,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:14:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 92399 states and 118663 transitions. [2018-10-27 08:14:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-10-27 08:14:47,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:47,383 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:14:47,383 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:47,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 899190773, now seen corresponding path program 1 times [2018-10-27 08:14:47,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:47,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:47,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:47,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:47,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2018-10-27 08:14:48,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:14:48,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:14:48,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:48,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:14:48,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:14:48,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:14:48,915 INFO L87 Difference]: Start difference. First operand 92399 states and 118663 transitions. Second operand 3 states. Received shutdown request... [2018-10-27 08:14:49,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 08:14:49,093 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:14:49,101 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:14:49,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:14:49 BoogieIcfgContainer [2018-10-27 08:14:49,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:14:49,103 INFO L168 Benchmark]: Toolchain (without parser) took 218226.79 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 08:14:49,104 INFO L168 Benchmark]: CDTParser took 0.18 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 08:14:49,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1275.98 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:49,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 398.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:49,108 INFO L168 Benchmark]: Boogie Preprocessor took 235.29 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 08:14:49,109 INFO L168 Benchmark]: RCFGBuilder took 8976.81 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: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:49,109 INFO L168 Benchmark]: TraceAbstraction took 207332.79 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -964.8 MB). Peak memory consumption was 718.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:14:49,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1275.98 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 398.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 235.29 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 8976.81 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: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207332.79 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -964.8 MB). Peak memory consumption was 718.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (92399states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (24 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 156.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3832 SDtfs, 21130 SDslu, 3653 SDs, 0 SdLazy, 42697 SolverSat, 8211 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 115.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 8372 GetRequests, 8185 SyntacticMatches, 12 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92399occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.0s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9966889695227193 AbsIntWeakeningRatio, 0.10441767068273092 AbsIntAvgWeakeningVarsNumRemoved, 14.72289156626506 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 4390 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 10268 NumberOfCodeBlocks, 10268 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 14172 ConstructedInterpolants, 0 QuantifiedInterpolants, 25251637 SizeOfPredicates, 12 NumberOfNonLiveVariables, 5558 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 13082/14457 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown