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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:02:26,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:02:26,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:02:26,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:02:26,987 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:02:26,989 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:02:26,991 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:02:26,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:02:26,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:02:27,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:02:27,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:02:27,002 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:02:27,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:02:27,005 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:02:27,013 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:02:27,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:02:27,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:02:27,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:02:27,024 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:02:27,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:02:27,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:02:27,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:02:27,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:02:27,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:02:27,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:02:27,032 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:02:27,033 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:02:27,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:02:27,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:02:27,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:02:27,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:02:27,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:02:27,038 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:02:27,064 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:02:27,065 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:02:27,066 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:02:27,066 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:02:27,066 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:02:27,066 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:02:27,066 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:02:27,067 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:02:27,068 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:02:27,068 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:02:27,069 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:02:27,069 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:02:27,069 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:02:27,069 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:02:27,069 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:02:27,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:02:27,070 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:02:27,070 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:02:27,070 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:02:27,070 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:02:27,070 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:02:27,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:02:27,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:02:27,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:02:27,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:02:27,071 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:02:27,072 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:02:27,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:02:27,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:02:27,072 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:02:27,072 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:02:27,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:02:27,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:02:27,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:02:27,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:02:27,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:02:27,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-11-07 09:02:27,198 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdeddf5/b6bdfc8454774ea5a7f0009a938c43c6/FLAG003d65057 [2018-11-07 09:02:27,847 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:02:27,851 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-11-07 09:02:27,874 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdeddf5/b6bdfc8454774ea5a7f0009a938c43c6/FLAG003d65057 [2018-11-07 09:02:27,890 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bdeddf5/b6bdfc8454774ea5a7f0009a938c43c6 [2018-11-07 09:02:27,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:02:27,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:02:27,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:02:27,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:02:27,908 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:02:27,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:02:27" (1/1) ... [2018-11-07 09:02:27,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cca8028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:27, skipping insertion in model container [2018-11-07 09:02:27,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:02:27" (1/1) ... [2018-11-07 09:02:27,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:02:27,980 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:02:28,430 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:02:28,439 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:02:28,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:02:28,663 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:02:28,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28 WrapperNode [2018-11-07 09:02:28,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:02:28,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:02:28,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:02:28,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:02:28,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:02:28,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:02:28,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:02:28,867 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:02:28,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (1/1) ... [2018-11-07 09:02:28,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:02:28,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:02:28,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:02:28,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:02:28,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (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 09:02:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:02:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:02:29,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:02:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:02:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:02:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:02:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:02:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:02:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:02:32,837 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:02:32,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:02:32 BoogieIcfgContainer [2018-11-07 09:02:32,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:02:32,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:02:32,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:02:32,843 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:02:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:02:27" (1/3) ... [2018-11-07 09:02:32,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d558b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:02:32, skipping insertion in model container [2018-11-07 09:02:32,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:02:28" (2/3) ... [2018-11-07 09:02:32,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d558b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:02:32, skipping insertion in model container [2018-11-07 09:02:32,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:02:32" (3/3) ... [2018-11-07 09:02:32,849 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label55_true-unreach-call_false-termination.c [2018-11-07 09:02:32,857 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:02:32,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:02:32,884 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:02:32,924 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:02:32,925 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:02:32,925 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:02:32,925 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:02:32,925 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:02:32,925 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:02:32,925 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:02:32,926 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:02:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 09:02:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 09:02:32,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:32,968 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:02:32,970 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:32,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash -353931284, now seen corresponding path program 1 times [2018-11-07 09:02:32,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:33,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:33,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:33,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:33,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:33,489 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 09:02:33,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:02:33,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:02:33,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:33,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:02:33,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:02:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:02:33,518 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 09:02:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:36,581 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 09:02:36,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:02:36,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-11-07 09:02:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:36,606 INFO L225 Difference]: With dead ends: 894 [2018-11-07 09:02:36,606 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 09:02:36,616 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 09:02:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 09:02:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 09:02:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 09:02:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 09:02:36,728 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 64 [2018-11-07 09:02:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:36,730 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 09:02:36,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:02:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 09:02:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 09:02:36,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:36,746 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:36,746 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:36,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash 835688739, now seen corresponding path program 1 times [2018-11-07 09:02:36,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:36,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:36,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:36,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:36,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:02:37,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:02:37,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:02:37,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:37,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:02:37,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:02:37,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:02:37,093 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 09:02:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:40,465 INFO L93 Difference]: Finished difference Result 2358 states and 3926 transitions. [2018-11-07 09:02:40,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:02:40,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-07 09:02:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:40,481 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 09:02:40,481 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 09:02:40,487 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 09:02:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 09:02:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 09:02:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 09:02:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-07 09:02:40,565 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 177 [2018-11-07 09:02:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:40,566 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-07 09:02:40,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:02:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-07 09:02:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-07 09:02:40,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:40,580 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:02:40,581 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:40,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1405952572, now seen corresponding path program 1 times [2018-11-07 09:02:40,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:40,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:40,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:40,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:40,583 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:02:41,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:41,320 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:41,322 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-11-07 09:02:41,325 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:41,400 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:41,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:41,926 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:02:41,927 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:02:41,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:41,956 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:02:42,426 INFO L227 lantSequenceWeakener]: Weakened 251 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 09:02:42,427 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:02:42,646 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-11-07 09:02:42,647 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:02:42,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:02:42,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:02:42,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:42,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:02:42,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:02:42,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:02:42,649 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 6 states. [2018-11-07 09:03:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:04,981 INFO L93 Difference]: Finished difference Result 3641 states and 5476 transitions. [2018-11-07 09:03:04,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:03:04,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2018-11-07 09:03:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:04,992 INFO L225 Difference]: With dead ends: 3641 [2018-11-07 09:03:04,992 INFO L226 Difference]: Without dead ends: 1916 [2018-11-07 09:03:04,998 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:03:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-07 09:03:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-07 09:03:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-07 09:03:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2811 transitions. [2018-11-07 09:03:05,058 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2811 transitions. Word has length 260 [2018-11-07 09:03:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:05,059 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2811 transitions. [2018-11-07 09:03:05,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:03:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2811 transitions. [2018-11-07 09:03:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-07 09:03:05,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:05,069 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:03:05,070 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:05,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:05,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1712998387, now seen corresponding path program 1 times [2018-11-07 09:03:05,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:05,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:05,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:05,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:05,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:05,609 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:03:05,810 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 09:03:06,033 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:03:06,341 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 09:03:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 258 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:03:06,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:06,693 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:06,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-11-07 09:03:06,694 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:06,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:06,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:06,836 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:06,837 INFO L272 AbstractInterpreter]: Visited 121 different actions 235 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:03:06,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:06,841 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:07,143 INFO L227 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 77.98% of their original sizes. [2018-11-07 09:03:07,144 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:07,592 INFO L415 sIntCurrentIteration]: We unified 344 AI predicates to 344 [2018-11-07 09:03:07,592 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:07,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:07,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 09:03:07,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:07,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:03:07,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:03:07,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:03:07,595 INFO L87 Difference]: Start difference. First operand 1914 states and 2811 transitions. Second operand 10 states. [2018-11-07 09:03:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:50,022 INFO L93 Difference]: Finished difference Result 4387 states and 6380 transitions. [2018-11-07 09:03:50,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:03:50,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 345 [2018-11-07 09:03:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:50,039 INFO L225 Difference]: With dead ends: 4387 [2018-11-07 09:03:50,039 INFO L226 Difference]: Without dead ends: 2662 [2018-11-07 09:03:50,045 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 353 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:03:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2018-11-07 09:03:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2659. [2018-11-07 09:03:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2018-11-07 09:03:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3644 transitions. [2018-11-07 09:03:50,115 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3644 transitions. Word has length 345 [2018-11-07 09:03:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:50,116 INFO L480 AbstractCegarLoop]: Abstraction has 2659 states and 3644 transitions. [2018-11-07 09:03:50,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:03:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3644 transitions. [2018-11-07 09:03:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-07 09:03:50,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:50,128 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:50,128 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:50,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:50,129 INFO L82 PathProgramCache]: Analyzing trace with hash -716872552, now seen corresponding path program 1 times [2018-11-07 09:03:50,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:50,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:50,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:50,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:50,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-07 09:03:50,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:50,864 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:50,864 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-07 09:03:50,864 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [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], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:50,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:50,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:51,124 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:51,125 INFO L272 AbstractInterpreter]: Visited 143 different actions 280 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:03:51,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:51,159 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:51,510 INFO L227 lantSequenceWeakener]: Weakened 393 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-07 09:03:51,510 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:51,701 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-07 09:03:51,702 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:51,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:51,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 09:03:51,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:51,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:03:51,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:03:51,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:03:51,704 INFO L87 Difference]: Start difference. First operand 2659 states and 3644 transitions. Second operand 10 states. [2018-11-07 09:04:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:15,004 INFO L93 Difference]: Finished difference Result 5317 states and 7330 transitions. [2018-11-07 09:04:15,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:04:15,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 396 [2018-11-07 09:04:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:15,018 INFO L225 Difference]: With dead ends: 5317 [2018-11-07 09:04:15,018 INFO L226 Difference]: Without dead ends: 2847 [2018-11-07 09:04:15,026 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:04:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2018-11-07 09:04:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2844. [2018-11-07 09:04:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2018-11-07 09:04:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3843 transitions. [2018-11-07 09:04:15,096 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3843 transitions. Word has length 396 [2018-11-07 09:04:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:15,096 INFO L480 AbstractCegarLoop]: Abstraction has 2844 states and 3843 transitions. [2018-11-07 09:04:15,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:04:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3843 transitions. [2018-11-07 09:04:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-07 09:04:15,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:15,108 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:15,108 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:15,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2056592459, now seen corresponding path program 1 times [2018-11-07 09:04:15,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:15,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:15,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:15,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:15,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 309 proven. 124 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 09:04:15,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:15,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:15,599 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-07 09:04:15,599 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:15,602 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:15,603 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:20,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:04:20,659 INFO L272 AbstractInterpreter]: Visited 121 different actions 362 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:04:20,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:20,669 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:04:21,583 INFO L227 lantSequenceWeakener]: Weakened 394 states. On average, predicates are now at 80.6% of their original sizes. [2018-11-07 09:04:21,583 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:04:21,950 INFO L415 sIntCurrentIteration]: We unified 396 AI predicates to 396 [2018-11-07 09:04:21,950 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:04:21,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:04:21,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 09:04:21,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:04:21,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:04:21,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:04:21,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:04:21,953 INFO L87 Difference]: Start difference. First operand 2844 states and 3843 transitions. Second operand 9 states. [2018-11-07 09:04:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:43,487 INFO L93 Difference]: Finished difference Result 5999 states and 8542 transitions. [2018-11-07 09:04:43,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:04:43,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 397 [2018-11-07 09:04:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:43,503 INFO L225 Difference]: With dead ends: 5999 [2018-11-07 09:04:43,503 INFO L226 Difference]: Without dead ends: 3529 [2018-11-07 09:04:43,514 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:04:43,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2018-11-07 09:04:43,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3499. [2018-11-07 09:04:43,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2018-11-07 09:04:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4687 transitions. [2018-11-07 09:04:43,606 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4687 transitions. Word has length 397 [2018-11-07 09:04:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:43,607 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 4687 transitions. [2018-11-07 09:04:43,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:04:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4687 transitions. [2018-11-07 09:04:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-07 09:04:43,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:43,626 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:43,627 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:43,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:43,627 INFO L82 PathProgramCache]: Analyzing trace with hash -459172996, now seen corresponding path program 1 times [2018-11-07 09:04:43,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:43,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:43,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 09:04:44,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:44,385 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:44,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-11-07 09:04:44,386 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [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], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:44,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:44,400 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:53,062 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:53,062 INFO L272 AbstractInterpreter]: Visited 123 different actions 492 times. Merged at 9 different actions 36 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:53,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:53,068 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:53,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:53,068 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 09:04:53,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:53,077 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:53,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 09:04:53,794 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 09:04:54,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:54,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:04:54,557 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:54,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:04:54,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:04:54,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:04:54,560 INFO L87 Difference]: Start difference. First operand 3499 states and 4687 transitions. Second operand 9 states. [2018-11-07 09:05:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:07,581 INFO L93 Difference]: Finished difference Result 11140 states and 17469 transitions. [2018-11-07 09:05:07,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-07 09:05:07,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2018-11-07 09:05:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:07,634 INFO L225 Difference]: With dead ends: 11140 [2018-11-07 09:05:07,635 INFO L226 Difference]: Without dead ends: 7646 [2018-11-07 09:05:07,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 989 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=425, Invalid=1555, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 09:05:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2018-11-07 09:05:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 7593. [2018-11-07 09:05:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7593 states. [2018-11-07 09:05:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 10695 transitions. [2018-11-07 09:05:07,920 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 10695 transitions. Word has length 482 [2018-11-07 09:05:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:07,921 INFO L480 AbstractCegarLoop]: Abstraction has 7593 states and 10695 transitions. [2018-11-07 09:05:07,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:05:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 10695 transitions. [2018-11-07 09:05:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2018-11-07 09:05:07,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:07,967 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:07,967 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:07,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:07,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1729058601, now seen corresponding path program 1 times [2018-11-07 09:05:07,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:07,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:07,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:07,969 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 446 proven. 136 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-11-07 09:05:08,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:08,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:08,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 552 with the following transitions: [2018-11-07 09:05:08,903 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:08,906 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:08,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:14,535 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:14,536 INFO L272 AbstractInterpreter]: Visited 124 different actions 492 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:05:14,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:14,541 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:14,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:14,541 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 09:05:14,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:14,551 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:14,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 839 proven. 2 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-11-07 09:05:15,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 446 proven. 136 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-11-07 09:05:15,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:15,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 09:05:15,408 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:05:15,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:05:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:05:15,410 INFO L87 Difference]: Start difference. First operand 7593 states and 10695 transitions. Second operand 10 states. [2018-11-07 09:05:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:21,422 INFO L93 Difference]: Finished difference Result 29151 states and 48053 transitions. [2018-11-07 09:05:21,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 09:05:21,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 551 [2018-11-07 09:05:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:21,622 INFO L225 Difference]: With dead ends: 29151 [2018-11-07 09:05:21,622 INFO L226 Difference]: Without dead ends: 20770 [2018-11-07 09:05:21,764 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1114 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 09:05:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20770 states. [2018-11-07 09:05:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20770 to 20607. [2018-11-07 09:05:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20607 states. [2018-11-07 09:05:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20607 states to 20607 states and 30127 transitions. [2018-11-07 09:05:22,548 INFO L78 Accepts]: Start accepts. Automaton has 20607 states and 30127 transitions. Word has length 551 [2018-11-07 09:05:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:22,549 INFO L480 AbstractCegarLoop]: Abstraction has 20607 states and 30127 transitions. [2018-11-07 09:05:22,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:05:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 20607 states and 30127 transitions. [2018-11-07 09:05:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-11-07 09:05:22,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:22,601 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:22,601 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:22,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:22,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2113671612, now seen corresponding path program 1 times [2018-11-07 09:05:22,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:22,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:22,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:22,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:22,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-07 09:05:23,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:23,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:23,348 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 555 with the following transitions: [2018-11-07 09:05:23,348 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:23,351 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:23,351 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:29,424 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:29,424 INFO L272 AbstractInterpreter]: Visited 124 different actions 492 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:05:29,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:29,432 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:29,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:29,432 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 09:05:29,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:29,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:29,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-07 09:05:29,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-07 09:05:30,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:30,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:05:30,061 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:30,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:05:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:05:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:05:30,062 INFO L87 Difference]: Start difference. First operand 20607 states and 30127 transitions. Second operand 9 states. [2018-11-07 09:05:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:33,965 INFO L93 Difference]: Finished difference Result 42743 states and 67882 transitions. [2018-11-07 09:05:33,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:05:33,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 554 [2018-11-07 09:05:33,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:34,102 INFO L225 Difference]: With dead ends: 42743 [2018-11-07 09:05:34,102 INFO L226 Difference]: Without dead ends: 17375 [2018-11-07 09:05:34,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1111 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:05:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17375 states. [2018-11-07 09:05:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17375 to 17078. [2018-11-07 09:05:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17078 states. [2018-11-07 09:05:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17078 states to 17078 states and 23927 transitions. [2018-11-07 09:05:35,015 INFO L78 Accepts]: Start accepts. Automaton has 17078 states and 23927 transitions. Word has length 554 [2018-11-07 09:05:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:35,017 INFO L480 AbstractCegarLoop]: Abstraction has 17078 states and 23927 transitions. [2018-11-07 09:05:35,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:05:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 17078 states and 23927 transitions. [2018-11-07 09:05:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-07 09:05:35,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:35,042 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:35,043 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:35,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:35,043 INFO L82 PathProgramCache]: Analyzing trace with hash -418272360, now seen corresponding path program 1 times [2018-11-07 09:05:35,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:35,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:35,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:35,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:35,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:35,749 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 09:05:35,950 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 09:05:36,418 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:05:36,855 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 09:05:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 604 proven. 409 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-07 09:05:37,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:37,746 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:37,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 559 with the following transitions: [2018-11-07 09:05:37,747 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:37,750 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:37,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:47,600 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:47,600 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:05:47,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:47,611 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:47,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:47,611 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 09:05:47,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:47,620 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:47,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2018-11-07 09:05:48,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2018-11-07 09:05:48,872 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:05:48,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 16 [2018-11-07 09:05:48,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:48,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:05:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:05:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:05:48,875 INFO L87 Difference]: Start difference. First operand 17078 states and 23927 transitions. Second operand 3 states. [2018-11-07 09:05:50,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:50,221 INFO L93 Difference]: Finished difference Result 36879 states and 53232 transitions. [2018-11-07 09:05:50,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:05:50,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-11-07 09:05:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:50,351 INFO L225 Difference]: With dead ends: 36879 [2018-11-07 09:05:50,352 INFO L226 Difference]: Without dead ends: 19990 [2018-11-07 09:05:50,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:05:50,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19990 states. [2018-11-07 09:05:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19990 to 19436. [2018-11-07 09:05:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19436 states. [2018-11-07 09:05:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 27439 transitions. [2018-11-07 09:05:51,068 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 27439 transitions. Word has length 558 [2018-11-07 09:05:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:51,069 INFO L480 AbstractCegarLoop]: Abstraction has 19436 states and 27439 transitions. [2018-11-07 09:05:51,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:05:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 27439 transitions. [2018-11-07 09:05:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-11-07 09:05:51,105 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:51,106 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:51,106 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:51,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:51,106 INFO L82 PathProgramCache]: Analyzing trace with hash 350716359, now seen corresponding path program 1 times [2018-11-07 09:05:51,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:51,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:51,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:51,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:51,108 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 604 proven. 447 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-07 09:05:52,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:52,709 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:52,709 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-11-07 09:05:52,709 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [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], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:05:52,711 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:52,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:01,993 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:06:01,994 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:06:02,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:02,001 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:06:02,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:02,001 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:06:02,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:02,011 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:02,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2018-11-07 09:06:02,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:06:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2018-11-07 09:06:02,669 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:06:02,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2018-11-07 09:06:02,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:02,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:06:02,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:06:02,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:06:02,671 INFO L87 Difference]: Start difference. First operand 19436 states and 27439 transitions. Second operand 3 states. [2018-11-07 09:06:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:04,118 INFO L93 Difference]: Finished difference Result 38498 states and 55101 transitions. [2018-11-07 09:06:04,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:06:04,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 577 [2018-11-07 09:06:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:04,230 INFO L225 Difference]: With dead ends: 38498 [2018-11-07 09:06:04,230 INFO L226 Difference]: Without dead ends: 19436 [2018-11-07 09:06:04,352 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1154 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:06:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19436 states. [2018-11-07 09:06:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19436 to 19436. [2018-11-07 09:06:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19436 states. [2018-11-07 09:06:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 26737 transitions. [2018-11-07 09:06:04,914 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 26737 transitions. Word has length 577 [2018-11-07 09:06:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:04,915 INFO L480 AbstractCegarLoop]: Abstraction has 19436 states and 26737 transitions. [2018-11-07 09:06:04,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:06:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 26737 transitions. [2018-11-07 09:06:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2018-11-07 09:06:04,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:04,937 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:06:04,937 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:04,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:04,938 INFO L82 PathProgramCache]: Analyzing trace with hash 154409739, now seen corresponding path program 1 times [2018-11-07 09:06:04,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:04,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:04,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:04,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:04,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 604 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-07 09:06:06,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:06,387 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:06,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 592 with the following transitions: [2018-11-07 09:06:06,387 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:06:06,390 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:06,390 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:06:11,895 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:06:11,896 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:06:11,896 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:06:11,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:11,896 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:06:11,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:11,979 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:12,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:12,139 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:06:12,340 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:06:12,340 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:06:12,346 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:06:12,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:06:12 BoogieIcfgContainer [2018-11-07 09:06:12,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:06:12,348 INFO L168 Benchmark]: Toolchain (without parser) took 224445.89 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 586.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:06:12,349 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:06:12,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.93 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:06:12,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:06:12,351 INFO L168 Benchmark]: Boogie Preprocessor took 123.76 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 09:06:12,352 INFO L168 Benchmark]: RCFGBuilder took 3847.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. [2018-11-07 09:06:12,352 INFO L168 Benchmark]: TraceAbstraction took 219507.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 508.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:06:12,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.93 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.76 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 3847.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219507.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 508.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was analyzing trace of length 592 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 219.4s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 143.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2140 SDtfs, 9693 SDslu, 2188 SDs, 0 SdLazy, 20094 SolverSat, 4079 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 108.8s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 7035 GetRequests, 6859 SyntacticMatches, 7 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20607occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 51.2s AbstIntTime, 10 AbstIntIterations, 4 AbstIntStrong, 0.9973934867649851 AbsIntWeakeningRatio, 0.08751793400286945 AbsIntAvgWeakeningVarsNumRemoved, 16.218794835007174 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 7083 NumberOfCodeBlocks, 7083 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 9784 ConstructedInterpolants, 0 QuantifiedInterpolants, 14168395 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4178 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 16757/18188 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown