java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:13:22,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:13:22,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:13:22,889 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:13:22,890 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:13:22,891 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:13:22,892 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:13:22,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:13:22,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:13:22,896 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:13:22,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:13:22,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:13:22,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:13:22,899 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:13:22,901 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:13:22,901 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:13:22,902 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:13:22,904 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:13:22,906 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:13:22,908 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:13:22,909 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:13:22,910 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:13:22,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:13:22,913 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:13:22,913 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:13:22,914 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:13:22,915 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:13:22,916 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:13:22,918 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:13:22,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:13:22,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:13:22,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:13:22,923 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:13:22,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:13:22,927 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:13:22,928 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:13:22,928 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:13:22,954 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:13:22,954 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:13:22,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:13:22,956 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:13:22,956 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:13:22,956 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:13:22,957 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:13:22,957 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:13:22,957 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:13:22,957 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:13:22,957 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:13:22,958 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:13:22,959 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:13:22,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:13:22,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:13:22,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:13:22,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:13:22,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:13:22,960 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:13:22,960 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:13:22,962 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:13:22,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:13:22,963 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:13:22,963 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:13:22,963 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:13:22,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:13:22,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:13:22,964 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:13:22,964 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:13:22,964 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:13:22,964 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:13:22,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:13:22,965 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:13:22,965 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:13:22,965 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:13:23,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:13:23,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:13:23,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:13:23,039 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:13:23,039 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:13:23,040 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c [2018-11-07 20:13:23,094 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a53d17e0/6d7faaab2ff74428a2e175983061deda/FLAGba26faefc [2018-11-07 20:13:23,706 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:13:23,709 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c [2018-11-07 20:13:23,743 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a53d17e0/6d7faaab2ff74428a2e175983061deda/FLAGba26faefc [2018-11-07 20:13:23,766 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a53d17e0/6d7faaab2ff74428a2e175983061deda [2018-11-07 20:13:23,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:13:23,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:13:23,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:13:23,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:13:23,786 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:13:23,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:23" (1/1) ... [2018-11-07 20:13:23,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:23, skipping insertion in model container [2018-11-07 20:13:23,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:23" (1/1) ... [2018-11-07 20:13:23,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:13:23,881 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:13:24,457 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:13:24,462 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:13:24,630 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:13:24,651 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:13:24,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24 WrapperNode [2018-11-07 20:13:24,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:13:24,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:13:24,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:13:24,653 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:13:24,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:13:24,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:13:24,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:13:24,850 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:13:24,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... [2018-11-07 20:13:24,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:13:24,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:13:24,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:13:24,977 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:13:24,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:13:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:13:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:13:25,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:13:25,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:13:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:13:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:13:25,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:13:25,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:13:25,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:13:29,118 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:13:29,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:29 BoogieIcfgContainer [2018-11-07 20:13:29,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:13:29,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:13:29,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:13:29,123 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:13:29,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:13:23" (1/3) ... [2018-11-07 20:13:29,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb448c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:29, skipping insertion in model container [2018-11-07 20:13:29,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:24" (2/3) ... [2018-11-07 20:13:29,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb448c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:29, skipping insertion in model container [2018-11-07 20:13:29,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:29" (3/3) ... [2018-11-07 20:13:29,127 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label50_true-unreach-call.c [2018-11-07 20:13:29,135 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:13:29,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:13:29,159 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:13:29,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:13:29,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:13:29,203 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:13:29,203 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:13:29,203 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:13:29,204 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:13:29,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:13:29,204 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:13:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 20:13:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 20:13:29,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:29,245 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] [2018-11-07 20:13:29,248 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:29,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:29,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2098834559, now seen corresponding path program 1 times [2018-11-07 20:13:29,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:29,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:29,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:29,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:29,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:29,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:29,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:13:29,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:29,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:13:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:13:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:13:29,808 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 20:13:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:33,033 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-07 20:13:33,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:13:33,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-07 20:13:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:33,060 INFO L225 Difference]: With dead ends: 1001 [2018-11-07 20:13:33,060 INFO L226 Difference]: Without dead ends: 702 [2018-11-07 20:13:33,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:13:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-07 20:13:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-07 20:13:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-07 20:13:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-07 20:13:33,174 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 43 [2018-11-07 20:13:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:33,175 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-07 20:13:33,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:13:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-07 20:13:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 20:13:33,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:33,184 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:13:33,185 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:33,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash 275725715, now seen corresponding path program 1 times [2018-11-07 20:13:33,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:33,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:33,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:33,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:33,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:33,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:33,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:13:33,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:33,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:13:33,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:13:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:13:33,563 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-07 20:13:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:38,134 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-07 20:13:38,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:13:38,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-11-07 20:13:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:38,150 INFO L225 Difference]: With dead ends: 2534 [2018-11-07 20:13:38,150 INFO L226 Difference]: Without dead ends: 1841 [2018-11-07 20:13:38,158 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:13:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-07 20:13:38,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-07 20:13:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-07 20:13:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-07 20:13:38,247 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 116 [2018-11-07 20:13:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:38,248 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-07 20:13:38,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:13:38,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-07 20:13:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 20:13:38,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:38,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:13:38,255 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:38,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1222906116, now seen corresponding path program 1 times [2018-11-07 20:13:38,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:38,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:38,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:38,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:38,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:38,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:38,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:13:38,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:38,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:13:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:13:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:13:38,499 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-07 20:13:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:40,828 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-11-07 20:13:40,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:13:40,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-11-07 20:13:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:40,849 INFO L225 Difference]: With dead ends: 4796 [2018-11-07 20:13:40,849 INFO L226 Difference]: Without dead ends: 2987 [2018-11-07 20:13:40,861 INFO L604 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 [2018-11-07 20:13:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-11-07 20:13:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-11-07 20:13:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-11-07 20:13:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-11-07 20:13:40,972 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 117 [2018-11-07 20:13:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:40,973 INFO L480 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-11-07 20:13:40,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:13:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-11-07 20:13:40,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 20:13:40,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:40,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:13:40,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:40,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:40,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1567634535, now seen corresponding path program 1 times [2018-11-07 20:13:40,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:40,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:40,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:40,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:40,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:41,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:41,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:13:41,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:41,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:13:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:13:41,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:13:41,518 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-11-07 20:13:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:45,352 INFO L93 Difference]: Finished difference Result 11406 states and 20946 transitions. [2018-11-07 20:13:45,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:13:45,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 20:13:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:45,454 INFO L225 Difference]: With dead ends: 11406 [2018-11-07 20:13:45,454 INFO L226 Difference]: Without dead ends: 8442 [2018-11-07 20:13:45,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:13:45,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2018-11-07 20:13:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 7646. [2018-11-07 20:13:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7646 states. [2018-11-07 20:13:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 11153 transitions. [2018-11-07 20:13:45,887 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 11153 transitions. Word has length 142 [2018-11-07 20:13:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:45,887 INFO L480 AbstractCegarLoop]: Abstraction has 7646 states and 11153 transitions. [2018-11-07 20:13:45,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:13:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 11153 transitions. [2018-11-07 20:13:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 20:13:45,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:45,901 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:13:45,901 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:45,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash 961249486, now seen corresponding path program 1 times [2018-11-07 20:13:45,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:45,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:45,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:45,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:46,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:13:46,333 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:13:46,334 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-11-07 20:13:46,336 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:13:46,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:13:46,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:13:46,885 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:13:46,886 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 20:13:46,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:46,945 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:13:47,472 INFO L227 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 73.44% of their original sizes. [2018-11-07 20:13:47,472 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:13:47,813 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-11-07 20:13:47,813 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:13:47,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:13:47,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:13:47,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:47,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:13:47,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:13:47,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:13:47,815 INFO L87 Difference]: Start difference. First operand 7646 states and 11153 transitions. Second operand 7 states. [2018-11-07 20:13:51,876 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:07,551 INFO L93 Difference]: Finished difference Result 15478 states and 22519 transitions. [2018-11-07 20:14:07,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:14:07,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2018-11-07 20:14:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:07,603 INFO L225 Difference]: With dead ends: 15478 [2018-11-07 20:14:07,604 INFO L226 Difference]: Without dead ends: 7838 [2018-11-07 20:14:07,639 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:14:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2018-11-07 20:14:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2018-11-07 20:14:07,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2018-11-07 20:14:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11354 transitions. [2018-11-07 20:14:07,896 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11354 transitions. Word has length 190 [2018-11-07 20:14:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:07,897 INFO L480 AbstractCegarLoop]: Abstraction has 7836 states and 11354 transitions. [2018-11-07 20:14:07,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:14:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11354 transitions. [2018-11-07 20:14:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 20:14:07,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:07,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:14:07,908 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:07,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:07,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1177715268, now seen corresponding path program 1 times [2018-11-07 20:14:07,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:07,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:07,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:07,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:07,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:08,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:08,496 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:08,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 20:14:08,497 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:08,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:08,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:09,054 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:09,582 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:14:09,582 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:14:09,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:09,590 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:14:09,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:09,590 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:14:09,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:09,603 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:14:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:09,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:14:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:10,206 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:14:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:11,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:14:11,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 20:14:11,063 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:14:11,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:14:11,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:14:11,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:14:11,064 INFO L87 Difference]: Start difference. First operand 7836 states and 11354 transitions. Second operand 9 states. [2018-11-07 20:14:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:19,603 INFO L93 Difference]: Finished difference Result 21953 states and 42249 transitions. [2018-11-07 20:14:19,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:14:19,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2018-11-07 20:14:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:19,763 INFO L225 Difference]: With dead ends: 21953 [2018-11-07 20:14:19,763 INFO L226 Difference]: Without dead ends: 14313 [2018-11-07 20:14:19,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 497 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:14:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2018-11-07 20:14:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14154. [2018-11-07 20:14:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14154 states. [2018-11-07 20:14:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14154 states to 14154 states and 24690 transitions. [2018-11-07 20:14:20,779 INFO L78 Accepts]: Start accepts. Automaton has 14154 states and 24690 transitions. Word has length 247 [2018-11-07 20:14:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:20,780 INFO L480 AbstractCegarLoop]: Abstraction has 14154 states and 24690 transitions. [2018-11-07 20:14:20,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:14:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14154 states and 24690 transitions. [2018-11-07 20:14:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 20:14:20,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:20,793 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:14:20,793 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:20,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1757010189, now seen corresponding path program 1 times [2018-11-07 20:14:20,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:20,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:20,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:20,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:21,293 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 20:14:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 20:14:22,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:22,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:22,117 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 20:14:22,117 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:22,123 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:22,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:22,244 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:22,685 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:14:22,685 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:14:22,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:22,722 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:14:23,223 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 73.37% of their original sizes. [2018-11-07 20:14:23,224 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:14:24,152 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 20:14:24,152 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:14:24,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:14:24,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-07 20:14:24,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:14:24,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:14:24,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:14:24,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:14:24,154 INFO L87 Difference]: Start difference. First operand 14154 states and 24690 transitions. Second operand 11 states. [2018-11-07 20:14:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:38,025 INFO L93 Difference]: Finished difference Result 29080 states and 50409 transitions. [2018-11-07 20:14:38,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:14:38,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 265 [2018-11-07 20:14:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:38,123 INFO L225 Difference]: With dead ends: 29080 [2018-11-07 20:14:38,124 INFO L226 Difference]: Without dead ends: 15122 [2018-11-07 20:14:38,216 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:14:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15122 states. [2018-11-07 20:14:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15122 to 15117. [2018-11-07 20:14:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15117 states. [2018-11-07 20:14:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15117 states to 15117 states and 25807 transitions. [2018-11-07 20:14:38,955 INFO L78 Accepts]: Start accepts. Automaton has 15117 states and 25807 transitions. Word has length 265 [2018-11-07 20:14:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:38,956 INFO L480 AbstractCegarLoop]: Abstraction has 15117 states and 25807 transitions. [2018-11-07 20:14:38,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:14:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 15117 states and 25807 transitions. [2018-11-07 20:14:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 20:14:38,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:38,970 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:14:38,971 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:38,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash -86645952, now seen corresponding path program 1 times [2018-11-07 20:14:38,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:38,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:38,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:38,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:38,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 20:14:40,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:40,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:40,309 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 20:14:40,310 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:40,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:40,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:40,540 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:41,544 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:14:41,544 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:14:41,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:41,585 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:14:41,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:41,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 20:14:41,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:41,606 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:14:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:41,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:14:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:43,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:14:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:44,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:14:44,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 20:14:44,033 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:14:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:14:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:14:44,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 20:14:44,034 INFO L87 Difference]: Start difference. First operand 15117 states and 25807 transitions. Second operand 11 states. [2018-11-07 20:14:49,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:49,554 INFO L93 Difference]: Finished difference Result 39544 states and 81907 transitions. [2018-11-07 20:14:49,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 20:14:49,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 265 [2018-11-07 20:14:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:49,831 INFO L225 Difference]: With dead ends: 39544 [2018-11-07 20:14:49,832 INFO L226 Difference]: Without dead ends: 25426 [2018-11-07 20:14:50,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 532 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:14:50,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25426 states. [2018-11-07 20:14:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25426 to 25380. [2018-11-07 20:14:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25380 states. [2018-11-07 20:14:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25380 states to 25380 states and 41010 transitions. [2018-11-07 20:14:51,227 INFO L78 Accepts]: Start accepts. Automaton has 25380 states and 41010 transitions. Word has length 265 [2018-11-07 20:14:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:51,228 INFO L480 AbstractCegarLoop]: Abstraction has 25380 states and 41010 transitions. [2018-11-07 20:14:51,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:14:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 25380 states and 41010 transitions. [2018-11-07 20:14:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 20:14:51,245 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:51,245 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:14:51,246 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:51,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1430752676, now seen corresponding path program 1 times [2018-11-07 20:14:51,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:51,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:51,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-07 20:14:51,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:14:51,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:14:51,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:14:51,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:14:51,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:14:51,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:14:51,645 INFO L87 Difference]: Start difference. First operand 25380 states and 41010 transitions. Second operand 4 states. [2018-11-07 20:14:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:55,512 INFO L93 Difference]: Finished difference Result 62656 states and 113704 transitions. [2018-11-07 20:14:55,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:14:55,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-11-07 20:14:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:55,983 INFO L225 Difference]: With dead ends: 62656 [2018-11-07 20:14:55,983 INFO L226 Difference]: Without dead ends: 37793 [2018-11-07 20:14:56,267 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:14:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37793 states. [2018-11-07 20:14:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37793 to 37733. [2018-11-07 20:14:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37733 states. [2018-11-07 20:14:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37733 states to 37733 states and 61446 transitions. [2018-11-07 20:14:57,903 INFO L78 Accepts]: Start accepts. Automaton has 37733 states and 61446 transitions. Word has length 267 [2018-11-07 20:14:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:57,904 INFO L480 AbstractCegarLoop]: Abstraction has 37733 states and 61446 transitions. [2018-11-07 20:14:57,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:14:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 37733 states and 61446 transitions. [2018-11-07 20:14:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 20:14:57,917 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:57,917 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:14:57,918 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:57,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:57,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1468766341, now seen corresponding path program 1 times [2018-11-07 20:14:57,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:57,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:57,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:57,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:57,920 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:58,953 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 20:14:59,257 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 20:14:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 79 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:59,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:59,460 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:59,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-07 20:14:59,461 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:59,467 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:59,467 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:59,531 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:00,145 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:15:00,146 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:15:00,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:00,152 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:15:00,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:00,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 20:15:00,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:00,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:15:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:00,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:15:00,751 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-07 20:15:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:01,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:15:01,675 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-07 20:15:02,229 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-07 20:15:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 73 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:02,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:15:02,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-11-07 20:15:02,735 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:15:02,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:15:02,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:15:02,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:15:02,736 INFO L87 Difference]: Start difference. First operand 37733 states and 61446 transitions. Second operand 16 states. [2018-11-07 20:15:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:15:15,516 INFO L93 Difference]: Finished difference Result 90511 states and 183882 transitions. [2018-11-07 20:15:15,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 20:15:15,517 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 270 [2018-11-07 20:15:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:15:16,416 INFO L225 Difference]: With dead ends: 90511 [2018-11-07 20:15:16,416 INFO L226 Difference]: Without dead ends: 53185 [2018-11-07 20:15:16,757 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=885, Invalid=3275, Unknown=0, NotChecked=0, Total=4160 [2018-11-07 20:15:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53185 states. [2018-11-07 20:15:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53185 to 48586. [2018-11-07 20:15:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48586 states. [2018-11-07 20:15:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48586 states to 48586 states and 82603 transitions. [2018-11-07 20:15:20,550 INFO L78 Accepts]: Start accepts. Automaton has 48586 states and 82603 transitions. Word has length 270 [2018-11-07 20:15:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:15:20,551 INFO L480 AbstractCegarLoop]: Abstraction has 48586 states and 82603 transitions. [2018-11-07 20:15:20,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:15:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 48586 states and 82603 transitions. [2018-11-07 20:15:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-07 20:15:20,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:15:20,569 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:15:20,569 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:15:20,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:20,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1494258244, now seen corresponding path program 1 times [2018-11-07 20:15:20,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:15:20,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:20,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:20,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:20,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:15:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 77 proven. 97 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 20:15:21,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:21,564 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:15:21,565 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-11-07 20:15:21,565 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [637], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:15:21,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:15:21,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:15:21,685 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:22,097 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:15:22,098 INFO L272 AbstractInterpreter]: Visited 141 different actions 419 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:15:22,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:22,103 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:15:22,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:22,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 20:15:22,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:22,114 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:15:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:22,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:15:27,071 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-11-07 20:15:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 20:15:27,231 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:15:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:27,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:15:27,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 12 [2018-11-07 20:15:27,893 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:15:27,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:15:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:15:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=89, Unknown=2, NotChecked=0, Total=132 [2018-11-07 20:15:27,896 INFO L87 Difference]: Start difference. First operand 48586 states and 82603 transitions. Second operand 10 states. [2018-11-07 20:15:34,757 WARN L179 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-11-07 20:16:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:07,816 INFO L93 Difference]: Finished difference Result 136277 states and 313954 transitions. [2018-11-07 20:16:07,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:16:07,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2018-11-07 20:16:07,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:09,559 INFO L225 Difference]: With dead ends: 136277 [2018-11-07 20:16:09,559 INFO L226 Difference]: Without dead ends: 88077 [2018-11-07 20:16:10,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 555 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=234, Invalid=575, Unknown=3, NotChecked=0, Total=812 [2018-11-07 20:16:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88077 states. [2018-11-07 20:16:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88077 to 86629. [2018-11-07 20:16:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86629 states. [2018-11-07 20:16:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86629 states to 86629 states and 180560 transitions. [2018-11-07 20:16:19,900 INFO L78 Accepts]: Start accepts. Automaton has 86629 states and 180560 transitions. Word has length 279 [2018-11-07 20:16:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:19,901 INFO L480 AbstractCegarLoop]: Abstraction has 86629 states and 180560 transitions. [2018-11-07 20:16:19,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:16:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 86629 states and 180560 transitions. [2018-11-07 20:16:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-07 20:16:19,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:19,916 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:16:19,916 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:19,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:19,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1661828858, now seen corresponding path program 1 times [2018-11-07 20:16:19,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:19,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:19,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:19,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:19,918 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:20,279 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:16:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:16:21,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:16:21,006 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:16:21,006 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-11-07 20:16:21,007 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:16:21,009 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:16:21,010 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:16:21,093 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:16:22,283 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:16:22,283 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:16:22,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:22,285 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:16:22,916 INFO L227 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 74.87% of their original sizes. [2018-11-07 20:16:22,916 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:16:23,447 INFO L415 sIntCurrentIteration]: We unified 285 AI predicates to 285 [2018-11-07 20:16:23,447 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:16:23,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:16:23,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-07 20:16:23,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:23,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:16:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:16:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:16:23,449 INFO L87 Difference]: Start difference. First operand 86629 states and 180560 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 20:16:48,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 20:16:48,881 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:16:48,887 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:16:48,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:16:48 BoogieIcfgContainer [2018-11-07 20:16:48,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:16:48,889 INFO L168 Benchmark]: Toolchain (without parser) took 205109.89 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:16:48,890 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:16:48,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 871.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:16:48,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:16:48,892 INFO L168 Benchmark]: Boogie Preprocessor took 127.12 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:16:48,892 INFO L168 Benchmark]: RCFGBuilder took 4141.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 179.8 MB). Peak memory consumption was 179.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:16:48,893 INFO L168 Benchmark]: TraceAbstraction took 199767.89 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -725.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 20:16:48,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 871.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.12 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4141.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 179.8 MB). Peak memory consumption was 179.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199767.89 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -725.2 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (86629states) and FLOYD_HOARE automaton (currently 32 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (171244 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 199.6s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 149.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2919 SDtfs, 15643 SDslu, 3749 SDs, 0 SdLazy, 30062 SolverSat, 5787 SolverUnsat, 47 SolverUnknown, 0 SolverNotchecked, 72.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3059 GetRequests, 2835 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 21.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86629occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.0s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9976842972845682 AbsIntWeakeningRatio, 0.11382113821138211 AbsIntAvgWeakeningVarsNumRemoved, 18.914634146341463 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 7161 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 3548 NumberOfCodeBlocks, 3548 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4589 ConstructedInterpolants, 3 QuantifiedInterpolants, 6702079 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1900 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 2154/2697 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown