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_label27_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:23:39,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:23:39,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:23:39,046 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:23:39,047 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:23:39,048 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:23:39,049 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:23:39,051 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:23:39,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:23:39,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:23:39,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:23:39,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:23:39,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:23:39,056 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:23:39,057 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:23:39,058 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:23:39,059 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:23:39,060 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:23:39,062 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:23:39,064 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:23:39,065 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:23:39,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:23:39,071 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:23:39,071 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:23:39,071 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:23:39,074 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:23:39,075 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:23:39,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:23:39,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:23:39,082 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:23:39,083 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:23:39,084 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 06:23:39,089 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 06:23:39,116 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:23:39,116 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:23:39,117 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:23:39,117 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:23:39,117 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:23:39,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:23:39,117 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:23:39,118 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:23:39,119 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:23:39,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:23:39,120 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:23:39,121 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:23:39,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:23:39,121 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:23:39,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:23:39,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:23:39,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:39,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:23:39,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:23:39,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:23:39,122 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:23:39,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:23:39,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:23:39,123 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:23:39,123 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:23:39,123 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:23:39,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:23:39,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:23:39,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:23:39,193 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:23:39,194 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:23:39,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label27_false-unreach-call_false-termination.c [2018-11-07 06:23:39,274 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7be4bb5/3061b12fbc9342aba6b1024c92253a11/FLAGa850b3db4 [2018-11-07 06:23:39,834 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:23:39,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label27_false-unreach-call_false-termination.c [2018-11-07 06:23:39,852 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7be4bb5/3061b12fbc9342aba6b1024c92253a11/FLAGa850b3db4 [2018-11-07 06:23:39,878 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7be4bb5/3061b12fbc9342aba6b1024c92253a11 [2018-11-07 06:23:39,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:23:39,891 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:23:39,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:39,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:23:39,898 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:23:39,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:39" (1/1) ... [2018-11-07 06:23:39,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73645cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:39, skipping insertion in model container [2018-11-07 06:23:39,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:39" (1/1) ... [2018-11-07 06:23:39,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:23:39,970 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:23:40,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:40,475 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:23:40,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:40,669 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:23:40,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40 WrapperNode [2018-11-07 06:23:40,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:40,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:40,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:23:40,672 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:23:40,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:40,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:23:40,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:23:40,807 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:23:40,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... [2018-11-07 06:23:40,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:23:40,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:23:40,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:23:40,937 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:23:40,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:23:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:23:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:23:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:23:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:23:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:23:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:23:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:23:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:23:44,678 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:23:44,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:44 BoogieIcfgContainer [2018-11-07 06:23:44,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:23:44,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:23:44,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:23:44,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:23:44,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:39" (1/3) ... [2018-11-07 06:23:44,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b41120a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:44, skipping insertion in model container [2018-11-07 06:23:44,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:40" (2/3) ... [2018-11-07 06:23:44,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b41120a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:44, skipping insertion in model container [2018-11-07 06:23:44,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:44" (3/3) ... [2018-11-07 06:23:44,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label27_false-unreach-call_false-termination.c [2018-11-07 06:23:44,697 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:23:44,706 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:23:44,723 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:23:44,761 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:23:44,762 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:23:44,762 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:23:44,762 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:23:44,762 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:23:44,763 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:23:44,763 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:23:44,763 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:23:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:23:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 06:23:44,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:44,799 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] [2018-11-07 06:23:44,802 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:44,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1858736316, now seen corresponding path program 1 times [2018-11-07 06:23:44,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:44,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:44,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:44,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:44,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:45,259 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 06:23:45,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:45,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:23:45,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:45,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:23:45,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:23:45,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:45,289 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:23:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:46,939 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:23:46,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:23:46,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-07 06:23:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:46,960 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:23:46,961 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:23:46,969 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:23:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:23:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:23:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-11-07 06:23:47,050 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 36 [2018-11-07 06:23:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:47,051 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-11-07 06:23:47,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:23:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-11-07 06:23:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 06:23:47,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:47,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:47,060 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:47,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:47,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1801704236, now seen corresponding path program 1 times [2018-11-07 06:23:47,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:47,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:47,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:47,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:47,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:47,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:47,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:23:47,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:47,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:23:47,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:23:47,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:23:47,407 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-11-07 06:23:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:49,781 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-11-07 06:23:49,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:23:49,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-11-07 06:23:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:49,792 INFO L225 Difference]: With dead ends: 1254 [2018-11-07 06:23:49,792 INFO L226 Difference]: Without dead ends: 826 [2018-11-07 06:23:49,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:23:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-11-07 06:23:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-11-07 06:23:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-11-07 06:23:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-11-07 06:23:49,872 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 116 [2018-11-07 06:23:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:49,873 INFO L480 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-11-07 06:23:49,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:23:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-11-07 06:23:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 06:23:49,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:49,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:49,882 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:49,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:49,882 INFO L82 PathProgramCache]: Analyzing trace with hash -881737549, now seen corresponding path program 1 times [2018-11-07 06:23:49,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:49,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:49,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:49,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:49,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:50,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:50,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:23:50,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:50,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:23:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:23:50,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:50,148 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-11-07 06:23:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:53,382 INFO L93 Difference]: Finished difference Result 1988 states and 3385 transitions. [2018-11-07 06:23:53,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:23:53,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-11-07 06:23:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:53,402 INFO L225 Difference]: With dead ends: 1988 [2018-11-07 06:23:53,402 INFO L226 Difference]: Without dead ends: 1182 [2018-11-07 06:23:53,407 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 06:23:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-11-07 06:23:53,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-11-07 06:23:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-11-07 06:23:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1748 transitions. [2018-11-07 06:23:53,457 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1748 transitions. Word has length 149 [2018-11-07 06:23:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:53,458 INFO L480 AbstractCegarLoop]: Abstraction has 1182 states and 1748 transitions. [2018-11-07 06:23:53,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:23:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1748 transitions. [2018-11-07 06:23:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 06:23:53,467 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:53,468 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:53,468 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:53,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:53,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1137796060, now seen corresponding path program 1 times [2018-11-07 06:23:53,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:53,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:53,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:53,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:53,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:54,025 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 06:23:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 58 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:23:54,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:54,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:54,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-07 06:23:54,437 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [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], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:54,483 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:54,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:58,275 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:58,277 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:23:58,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:58,318 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:01,824 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-07 06:24:01,825 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:01,999 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-07 06:24:01,999 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:02,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:02,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 06:24:02,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:02,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:24:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:24:02,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:24:02,002 INFO L87 Difference]: Start difference. First operand 1182 states and 1748 transitions. Second operand 6 states. [2018-11-07 06:24:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:15,193 INFO L93 Difference]: Finished difference Result 2543 states and 3768 transitions. [2018-11-07 06:24:15,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:24:15,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-11-07 06:24:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:15,200 INFO L225 Difference]: With dead ends: 2543 [2018-11-07 06:24:15,201 INFO L226 Difference]: Without dead ends: 1367 [2018-11-07 06:24:15,205 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:24:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2018-11-07 06:24:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2018-11-07 06:24:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2018-11-07 06:24:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1938 transitions. [2018-11-07 06:24:15,242 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1938 transitions. Word has length 230 [2018-11-07 06:24:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:15,243 INFO L480 AbstractCegarLoop]: Abstraction has 1365 states and 1938 transitions. [2018-11-07 06:24:15,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1938 transitions. [2018-11-07 06:24:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-07 06:24:15,250 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:15,250 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:15,251 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:15,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:15,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2002790539, now seen corresponding path program 1 times [2018-11-07 06:24:15,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:15,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:15,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:15,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:15,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 175 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:16,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:16,158 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:16,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-11-07 06:24:16,158 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [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], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:16,164 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:16,164 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:20,082 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:20,082 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 06:24:20,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:20,091 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:22,318 INFO L227 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-07 06:24:22,318 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:22,764 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-11-07 06:24:22,764 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:22,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:22,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:24:22,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:22,766 INFO L87 Difference]: Start difference. First operand 1365 states and 1938 transitions. Second operand 10 states. [2018-11-07 06:25:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:31,135 INFO L93 Difference]: Finished difference Result 3104 states and 4527 transitions. [2018-11-07 06:25:31,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:25:31,135 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 315 [2018-11-07 06:25:31,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:31,145 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 06:25:31,146 INFO L226 Difference]: Without dead ends: 1928 [2018-11-07 06:25:31,151 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 323 GetRequests, 306 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 06:25:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-11-07 06:25:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1925. [2018-11-07 06:25:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1925 states. [2018-11-07 06:25:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2546 transitions. [2018-11-07 06:25:31,202 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2546 transitions. Word has length 315 [2018-11-07 06:25:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:31,203 INFO L480 AbstractCegarLoop]: Abstraction has 1925 states and 2546 transitions. [2018-11-07 06:25:31,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2546 transitions. [2018-11-07 06:25:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-07 06:25:31,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:31,214 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:31,214 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:31,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1319860115, now seen corresponding path program 1 times [2018-11-07 06:25:31,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:31,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:31,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 314 proven. 218 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 06:25:31,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:31,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:31,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-07 06:25:31,991 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [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], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:31,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:31,995 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:36,184 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:36,185 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 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 06:25:36,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:36,190 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:38,330 INFO L227 lantSequenceWeakener]: Weakened 412 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 06:25:38,330 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:39,085 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-07 06:25:39,086 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:39,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:39,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:25:39,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:39,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:25:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:25:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:25:39,088 INFO L87 Difference]: Start difference. First operand 1925 states and 2546 transitions. Second operand 10 states. [2018-11-07 06:25:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:59,927 INFO L93 Difference]: Finished difference Result 3849 states and 5116 transitions. [2018-11-07 06:25:59,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:25:59,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 415 [2018-11-07 06:25:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:59,936 INFO L225 Difference]: With dead ends: 3849 [2018-11-07 06:25:59,936 INFO L226 Difference]: Without dead ends: 2113 [2018-11-07 06:25:59,942 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 422 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:25:59,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2018-11-07 06:25:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2110. [2018-11-07 06:25:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2110 states. [2018-11-07 06:25:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2745 transitions. [2018-11-07 06:25:59,990 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2745 transitions. Word has length 415 [2018-11-07 06:25:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:59,990 INFO L480 AbstractCegarLoop]: Abstraction has 2110 states and 2745 transitions. [2018-11-07 06:25:59,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2745 transitions. [2018-11-07 06:26:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-11-07 06:26:00,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:00,003 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:00,003 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:00,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 164788363, now seen corresponding path program 1 times [2018-11-07 06:26:00,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:00,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:00,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:00,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:00,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:00,859 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:26:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 348 proven. 80 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-11-07 06:26:01,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:01,328 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:01,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 452 with the following transitions: [2018-11-07 06:26:01,329 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:01,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:01,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:10,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:26:10,025 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 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 06:26:10,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:10,030 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:26:11,236 INFO L227 lantSequenceWeakener]: Weakened 448 states. On average, predicates are now at 80.24% of their original sizes. [2018-11-07 06:26:11,237 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:26:11,302 INFO L415 sIntCurrentIteration]: We unified 450 AI predicates to 450 [2018-11-07 06:26:11,302 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:26:11,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:26:11,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 06:26:11,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:11,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:26:11,304 INFO L87 Difference]: Start difference. First operand 2110 states and 2745 transitions. Second operand 9 states. [2018-11-07 06:26:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:26,737 INFO L93 Difference]: Finished difference Result 4375 states and 5938 transitions. [2018-11-07 06:26:26,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:26:26,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 451 [2018-11-07 06:26:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:26,746 INFO L225 Difference]: With dead ends: 4375 [2018-11-07 06:26:26,746 INFO L226 Difference]: Without dead ends: 2639 [2018-11-07 06:26:26,753 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 457 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:26:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2018-11-07 06:26:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2620. [2018-11-07 06:26:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2620 states. [2018-11-07 06:26:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3423 transitions. [2018-11-07 06:26:26,814 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3423 transitions. Word has length 451 [2018-11-07 06:26:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:26,814 INFO L480 AbstractCegarLoop]: Abstraction has 2620 states and 3423 transitions. [2018-11-07 06:26:26,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3423 transitions. [2018-11-07 06:26:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-11-07 06:26:26,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:26,829 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:26,829 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:26,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 797962692, now seen corresponding path program 1 times [2018-11-07 06:26:26,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:26,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:26,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:26,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:26,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 243 proven. 259 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-11-07 06:26:27,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:27,499 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:27,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-11-07 06:26:27,500 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [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], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:27,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:27,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:33,863 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:33,863 INFO L272 AbstractInterpreter]: Visited 125 different actions 505 times. Merged at 9 different actions 41 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:26:33,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:33,876 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:33,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:33,876 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 06:26:33,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:33,932 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:34,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2018-11-07 06:26:34,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 243 proven. 259 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-11-07 06:26:35,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:35,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:26:35,307 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:35,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:35,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:35,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:26:35,309 INFO L87 Difference]: Start difference. First operand 2620 states and 3423 transitions. Second operand 9 states. [2018-11-07 06:26:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:41,633 INFO L93 Difference]: Finished difference Result 6558 states and 9160 transitions. [2018-11-07 06:26:41,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 06:26:41,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 500 [2018-11-07 06:26:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:41,664 INFO L225 Difference]: With dead ends: 6558 [2018-11-07 06:26:41,664 INFO L226 Difference]: Without dead ends: 3943 [2018-11-07 06:26:41,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1017 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-07 06:26:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2018-11-07 06:26:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3915. [2018-11-07 06:26:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3915 states. [2018-11-07 06:26:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3915 states to 3915 states and 4888 transitions. [2018-11-07 06:26:41,790 INFO L78 Accepts]: Start accepts. Automaton has 3915 states and 4888 transitions. Word has length 500 [2018-11-07 06:26:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:41,791 INFO L480 AbstractCegarLoop]: Abstraction has 3915 states and 4888 transitions. [2018-11-07 06:26:41,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3915 states and 4888 transitions. [2018-11-07 06:26:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-07 06:26:41,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:41,802 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:41,803 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:41,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1295715964, now seen corresponding path program 1 times [2018-11-07 06:26:41,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:41,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:41,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:41,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:41,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:43,241 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:26:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 350 proven. 261 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 06:26:43,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:43,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:43,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-11-07 06:26:43,901 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [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], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:43,908 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:43,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:50,339 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:50,339 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:50,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:50,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:50,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:50,348 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 06:26:50,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:50,357 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:50,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 551 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-11-07 06:26:50,932 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 348 proven. 80 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-11-07 06:26:51,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:51,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:26:51,892 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:51,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:51,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:51,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:26:51,894 INFO L87 Difference]: Start difference. First operand 3915 states and 4888 transitions. Second operand 17 states. [2018-11-07 06:26:54,326 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-11-07 06:26:55,100 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 06:26:55,435 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 06:26:55,909 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2018-11-07 06:26:57,648 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 06:27:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:04,311 INFO L93 Difference]: Finished difference Result 8778 states and 11475 transitions. [2018-11-07 06:27:04,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-07 06:27:04,312 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 518 [2018-11-07 06:27:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:04,335 INFO L225 Difference]: With dead ends: 8778 [2018-11-07 06:27:04,336 INFO L226 Difference]: Without dead ends: 4543 [2018-11-07 06:27:04,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1130 GetRequests, 1067 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=875, Invalid=3285, Unknown=0, NotChecked=0, Total=4160 [2018-11-07 06:27:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4543 states. [2018-11-07 06:27:04,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4543 to 4435. [2018-11-07 06:27:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4435 states. [2018-11-07 06:27:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 5392 transitions. [2018-11-07 06:27:04,475 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 5392 transitions. Word has length 518 [2018-11-07 06:27:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:04,476 INFO L480 AbstractCegarLoop]: Abstraction has 4435 states and 5392 transitions. [2018-11-07 06:27:04,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 5392 transitions. [2018-11-07 06:27:04,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-07 06:27:04,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:04,489 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, 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, 3, 3, 3, 3, 3, 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] [2018-11-07 06:27:04,489 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:04,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:04,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1213538324, now seen corresponding path program 1 times [2018-11-07 06:27:04,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:04,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:04,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:04,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:04,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 464 proven. 397 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-11-07 06:27:05,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:05,748 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:05,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 525 with the following transitions: [2018-11-07 06:27:05,748 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [538], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:05,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:05,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:15,628 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:15,629 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 06:27:15,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:15,638 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:15,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:15,638 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 06:27:15,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:15,649 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:15,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 729 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 06:27:16,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 458 proven. 80 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-11-07 06:27:16,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:16,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:27:16,865 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:16,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:27:16,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:27:16,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:27:16,866 INFO L87 Difference]: Start difference. First operand 4435 states and 5392 transitions. Second operand 17 states. [2018-11-07 06:27:17,159 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-11-07 06:27:20,930 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-11-07 06:27:23,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:23,543 INFO L93 Difference]: Finished difference Result 9939 states and 12614 transitions. [2018-11-07 06:27:23,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 06:27:23,543 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 524 [2018-11-07 06:27:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:23,567 INFO L225 Difference]: With dead ends: 9939 [2018-11-07 06:27:23,567 INFO L226 Difference]: Without dead ends: 4745 [2018-11-07 06:27:23,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1059 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 06:27:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2018-11-07 06:27:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4616. [2018-11-07 06:27:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4616 states. [2018-11-07 06:27:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 5253 transitions. [2018-11-07 06:27:23,705 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 5253 transitions. Word has length 524 [2018-11-07 06:27:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:23,706 INFO L480 AbstractCegarLoop]: Abstraction has 4616 states and 5253 transitions. [2018-11-07 06:27:23,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 5253 transitions. [2018-11-07 06:27:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-11-07 06:27:23,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:23,715 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:27:23,716 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:23,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1680632705, now seen corresponding path program 2 times [2018-11-07 06:27:23,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:23,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:23,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 496 proven. 80 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2018-11-07 06:27:24,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:24,591 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:24,591 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 06:27:24,591 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:27:24,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:24,592 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 06:27:24,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 06:27:24,601 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 06:27:24,688 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-07 06:27:24,689 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 06:27:24,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:25,288 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 06:27:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-07 06:27:25,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2018-11-07 06:27:26,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:26,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-07 06:27:26,127 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:26,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:27:26,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:27:26,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-07 06:27:26,128 INFO L87 Difference]: Start difference. First operand 4616 states and 5253 transitions. Second operand 10 states. [2018-11-07 06:27:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:33,408 INFO L93 Difference]: Finished difference Result 16734 states and 21686 transitions. [2018-11-07 06:27:33,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-07 06:27:33,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 629 [2018-11-07 06:27:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:33,461 INFO L225 Difference]: With dead ends: 16734 [2018-11-07 06:27:33,461 INFO L226 Difference]: Without dead ends: 10055 [2018-11-07 06:27:33,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 1284 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=469, Invalid=1883, Unknown=0, NotChecked=0, Total=2352 [2018-11-07 06:27:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2018-11-07 06:27:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 9869. [2018-11-07 06:27:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9869 states. [2018-11-07 06:27:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 11309 transitions. [2018-11-07 06:27:33,761 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 11309 transitions. Word has length 629 [2018-11-07 06:27:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:33,761 INFO L480 AbstractCegarLoop]: Abstraction has 9869 states and 11309 transitions. [2018-11-07 06:27:33,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:27:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 11309 transitions. [2018-11-07 06:27:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-11-07 06:27:33,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:33,772 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:33,772 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:33,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:33,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1833410272, now seen corresponding path program 1 times [2018-11-07 06:27:33,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:33,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:33,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 06:27:33,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:33,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 503 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-11-07 06:27:34,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:34,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:34,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 649 with the following transitions: [2018-11-07 06:27:34,460 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], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [586], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:34,463 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:34,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 06:27:38,576 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 06:27:38,577 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 06:27:38,577 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:27:38,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:38,577 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 06:27:38,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:38,585 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:38,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:38,738 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 06:27:38,939 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:38,939 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:27:38,943 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:27:38,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:38 BoogieIcfgContainer [2018-11-07 06:27:38,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:27:38,944 INFO L168 Benchmark]: Toolchain (without parser) took 239054.09 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:38,945 INFO L168 Benchmark]: CDTParser took 0.22 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 06:27:38,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 778.01 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:38,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:38,947 INFO L168 Benchmark]: Boogie Preprocessor took 129.29 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 06:27:38,948 INFO L168 Benchmark]: RCFGBuilder took 3742.76 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: 129.2 MB). Peak memory consumption was 129.2 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:38,949 INFO L168 Benchmark]: TraceAbstraction took 234262.93 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -971.9 MB). Peak memory consumption was 944.9 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:38,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 778.01 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 135.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.29 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 3742.76 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: 129.2 MB). Peak memory consumption was 129.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234262.93 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -971.9 MB). Peak memory consumption was 944.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was analyzing trace of length 649 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 158.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1681 SDtfs, 19207 SDslu, 2827 SDs, 0 SdLazy, 29017 SolverSat, 4993 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 6069 GetRequests, 5814 SyntacticMatches, 7 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9869occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.5s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9970194725741129 AbsIntWeakeningRatio, 0.09523809523809523 AbsIntAvgWeakeningVarsNumRemoved, 16.041222459132907 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 492 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 6054 NumberOfCodeBlocks, 5722 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8206 ConstructedInterpolants, 0 QuantifiedInterpolants, 19021183 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2877 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 11272/13226 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown