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_label22_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:23:35,162 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:23:35,164 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:23:35,176 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:23:35,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:23:35,177 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:23:35,178 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:23:35,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:23:35,182 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:23:35,183 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:23:35,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:23:35,184 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:23:35,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:23:35,186 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:23:35,187 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:23:35,187 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:23:35,188 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:23:35,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:23:35,192 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:23:35,194 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:23:35,195 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:23:35,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:23:35,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:23:35,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:23:35,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:23:35,207 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:23:35,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:23:35,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:23:35,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:23:35,211 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:23:35,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:23:35,212 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 06:23:35,218 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 06:23:35,239 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:23:35,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:23:35,240 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:23:35,240 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:23:35,241 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:23:35,241 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:23:35,241 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:23:35,241 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:23:35,241 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:23:35,242 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:23:35,242 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:23:35,242 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:23:35,242 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:23:35,242 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:23:35,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:23:35,243 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:23:35,243 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:23:35,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:23:35,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:23:35,244 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:23:35,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:23:35,244 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:23:35,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:23:35,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:23:35,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:23:35,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:23:35,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:35,246 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:23:35,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:23:35,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:23:35,246 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:23:35,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:23:35,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:23:35,247 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:23:35,247 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:23:35,247 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:23:35,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:23:35,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:23:35,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:23:35,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:23:35,342 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:23:35,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-11-07 06:23:35,410 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b917efe/c6fca98e0e034a0e802037ad9c484e04/FLAGf74d3b091 [2018-11-07 06:23:36,021 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:23:36,022 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label22_false-unreach-call_false-termination.c [2018-11-07 06:23:36,039 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b917efe/c6fca98e0e034a0e802037ad9c484e04/FLAGf74d3b091 [2018-11-07 06:23:36,056 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b917efe/c6fca98e0e034a0e802037ad9c484e04 [2018-11-07 06:23:36,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:23:36,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:23:36,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:36,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:23:36,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:23:36,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c33ac4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36, skipping insertion in model container [2018-11-07 06:23:36,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:23:36,157 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:23:36,623 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:36,627 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:23:36,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:36,796 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:23:36,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36 WrapperNode [2018-11-07 06:23:36,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:36,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:36,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:23:36,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:23:36,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:36,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:23:36,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:23:36,968 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:23:36,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:36,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:37,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:37,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:37,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (1/1) ... [2018-11-07 06:23:37,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:23:37,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:23:37,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:23:37,114 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:23:37,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (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 06:23:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:23:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:23:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:23:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:23:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:23:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:23:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:23:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:23:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:23:40,830 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:23:40,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:40 BoogieIcfgContainer [2018-11-07 06:23:40,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:23:40,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:23:40,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:23:40,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:23:40,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:36" (1/3) ... [2018-11-07 06:23:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1916390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:40, skipping insertion in model container [2018-11-07 06:23:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:36" (2/3) ... [2018-11-07 06:23:40,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1916390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:40, skipping insertion in model container [2018-11-07 06:23:40,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:40" (3/3) ... [2018-11-07 06:23:40,839 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label22_false-unreach-call_false-termination.c [2018-11-07 06:23:40,850 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:23:40,862 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:23:40,878 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:23:40,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:23:40,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:23:40,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:23:40,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:23:40,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:23:40,920 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:23:40,920 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:23:40,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:23:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:23:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 06:23:40,965 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:40,966 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] [2018-11-07 06:23:40,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:40,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash -874290308, now seen corresponding path program 1 times [2018-11-07 06:23:40,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:41,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:41,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:41,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:41,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:41,369 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 06:23:41,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:41,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:23:41,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:41,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:23:41,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:23:41,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:41,393 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:23:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:43,463 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:23:43,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:23:43,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 06:23:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:43,487 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:23:43,487 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:23:43,495 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 06:23:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:23:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:23:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:23:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:23:43,580 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 20 [2018-11-07 06:23:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:23:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:23:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:23:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-07 06:23:43,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:43,587 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:43,588 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:43,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:43,588 INFO L82 PathProgramCache]: Analyzing trace with hash 473181535, now seen corresponding path program 1 times [2018-11-07 06:23:43,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:43,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:43,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:43,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:43,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:23:43,956 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:43,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:23:43,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:23:43,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:23:43,959 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:23:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:46,167 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 06:23:46,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:23:46,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-11-07 06:23:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:46,174 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 06:23:46,175 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 06:23:46,177 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:23:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 06:23:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 06:23:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 06:23:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 06:23:46,224 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 95 [2018-11-07 06:23:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:46,225 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 06:23:46,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:23:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 06:23:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 06:23:46,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:46,230 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:46,230 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:46,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:46,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1939267164, now seen corresponding path program 1 times [2018-11-07 06:23:46,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:46,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:46,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:46,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:46,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:46,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:46,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:23:46,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:46,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:23:46,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:23:46,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:46,438 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 06:23:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:50,544 INFO L93 Difference]: Finished difference Result 2350 states and 4011 transitions. [2018-11-07 06:23:50,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:23:50,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-11-07 06:23:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:50,564 INFO L225 Difference]: With dead ends: 2350 [2018-11-07 06:23:50,564 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 06:23:50,571 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 06:23:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 06:23:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 06:23:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 06:23:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2640 transitions. [2018-11-07 06:23:50,646 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2640 transitions. Word has length 104 [2018-11-07 06:23:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:50,647 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2640 transitions. [2018-11-07 06:23:50,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:23:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2640 transitions. [2018-11-07 06:23:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 06:23:50,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:50,663 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:50,663 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:50,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1125198180, now seen corresponding path program 1 times [2018-11-07 06:23:50,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:50,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:50,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:50,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:50,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 06:23:50,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:50,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:23:50,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:50,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:23:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:23:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:23:50,964 INFO L87 Difference]: Start difference. First operand 1731 states and 2640 transitions. Second operand 3 states. [2018-11-07 06:23:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:52,738 INFO L93 Difference]: Finished difference Result 4928 states and 7680 transitions. [2018-11-07 06:23:52,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:23:52,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2018-11-07 06:23:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:52,768 INFO L225 Difference]: With dead ends: 4928 [2018-11-07 06:23:52,768 INFO L226 Difference]: Without dead ends: 3203 [2018-11-07 06:23:52,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 06:23:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2018-11-07 06:23:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3203. [2018-11-07 06:23:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2018-11-07 06:23:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4752 transitions. [2018-11-07 06:23:52,907 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4752 transitions. Word has length 214 [2018-11-07 06:23:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:52,908 INFO L480 AbstractCegarLoop]: Abstraction has 3203 states and 4752 transitions. [2018-11-07 06:23:52,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:23:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4752 transitions. [2018-11-07 06:23:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 06:23:52,918 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:52,919 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 06:23:52,919 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:52,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:52,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1192909764, now seen corresponding path program 1 times [2018-11-07 06:23:52,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:52,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:52,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:52,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:52,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:53,498 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 06:23:54,205 WARN L179 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-11-07 06:23:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:54,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:54,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:54,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-07 06:23:54,908 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:54,964 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:54,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:59,425 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:59,427 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 06:23:59,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:59,443 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:02,259 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-07 06:24:02,259 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:02,521 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-07 06:24:02,522 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:02,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:02,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-11-07 06:24:02,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:02,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:24:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:24:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:24:02,525 INFO L87 Difference]: Start difference. First operand 3203 states and 4752 transitions. Second operand 6 states. [2018-11-07 06:24:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:28,034 INFO L93 Difference]: Finished difference Result 6585 states and 9782 transitions. [2018-11-07 06:24:28,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:24:28,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 06:24:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:28,058 INFO L225 Difference]: With dead ends: 6585 [2018-11-07 06:24:28,059 INFO L226 Difference]: Without dead ends: 3388 [2018-11-07 06:24:28,075 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:24:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-11-07 06:24:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2018-11-07 06:24:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2018-11-07 06:24:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4943 transitions. [2018-11-07 06:24:28,172 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4943 transitions. Word has length 226 [2018-11-07 06:24:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:28,173 INFO L480 AbstractCegarLoop]: Abstraction has 3386 states and 4943 transitions. [2018-11-07 06:24:28,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4943 transitions. [2018-11-07 06:24:28,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-07 06:24:28,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:28,187 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 06:24:28,187 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:28,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1312706291, now seen corresponding path program 1 times [2018-11-07 06:24:28,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:28,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:28,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:28,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:28,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:28,707 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:28,922 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:24:29,149 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 127 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:29,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:29,751 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:29,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-11-07 06:24:29,752 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [554], [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], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:29,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:29,759 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:35,272 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:24:35,272 INFO L272 AbstractInterpreter]: Visited 123 different actions 238 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 06:24:35,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:35,281 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:24:35,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:35,281 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 06:24:35,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:35,295 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:24:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:35,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:24:35,753 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:36,165 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 235 proven. 53 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-07 06:24:36,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:24:37,255 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 06:24:37,598 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:24:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 49 proven. 248 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:38,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:24:38,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-11-07 06:24:38,211 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:24:38,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 06:24:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 06:24:38,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:24:38,213 INFO L87 Difference]: Start difference. First operand 3386 states and 4943 transitions. Second operand 15 states. [2018-11-07 06:24:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:44,175 INFO L93 Difference]: Finished difference Result 7545 states and 11246 transitions. [2018-11-07 06:24:44,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 06:24:44,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2018-11-07 06:24:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:44,199 INFO L225 Difference]: With dead ends: 7545 [2018-11-07 06:24:44,199 INFO L226 Difference]: Without dead ends: 4149 [2018-11-07 06:24:44,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 628 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 06:24:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2018-11-07 06:24:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3958. [2018-11-07 06:24:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3958 states. [2018-11-07 06:24:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5382 transitions. [2018-11-07 06:24:44,341 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5382 transitions. Word has length 311 [2018-11-07 06:24:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:44,342 INFO L480 AbstractCegarLoop]: Abstraction has 3958 states and 5382 transitions. [2018-11-07 06:24:44,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 06:24:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5382 transitions. [2018-11-07 06:24:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-07 06:24:44,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:44,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:44,355 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:44,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:44,356 INFO L82 PathProgramCache]: Analyzing trace with hash 535151199, now seen corresponding path program 1 times [2018-11-07 06:24:44,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:44,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:44,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:44,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:44,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:44,930 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:24:45,141 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:24:45,534 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-11-07 06:24:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 52 proven. 279 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:46,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:46,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:46,000 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-07 06:24:46,001 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:46,005 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:46,005 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:50,056 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:50,056 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 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 06:24:50,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:50,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:52,171 INFO L227 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 77.4% of their original sizes. [2018-11-07 06:24:52,171 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:52,488 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-11-07 06:24:52,488 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:52,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:52,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-11-07 06:24:52,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:52,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:52,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:52,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:52,490 INFO L87 Difference]: Start difference. First operand 3958 states and 5382 transitions. Second operand 10 states. [2018-11-07 06:25:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:27,349 INFO L93 Difference]: Finished difference Result 7726 states and 10575 transitions. [2018-11-07 06:25:27,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:25:27,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 337 [2018-11-07 06:25:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:27,368 INFO L225 Difference]: With dead ends: 7726 [2018-11-07 06:25:27,369 INFO L226 Difference]: Without dead ends: 3959 [2018-11-07 06:25:27,385 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 344 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:25:27,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2018-11-07 06:25:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3952. [2018-11-07 06:25:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3952 states. [2018-11-07 06:25:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5328 transitions. [2018-11-07 06:25:27,488 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5328 transitions. Word has length 337 [2018-11-07 06:25:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:27,489 INFO L480 AbstractCegarLoop]: Abstraction has 3952 states and 5328 transitions. [2018-11-07 06:25:27,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5328 transitions. [2018-11-07 06:25:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-11-07 06:25:27,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:27,507 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:27,507 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:27,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:27,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1895497741, now seen corresponding path program 1 times [2018-11-07 06:25:27,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:27,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:27,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:27,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:27,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:25:28,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:28,253 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:28,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 448 with the following transitions: [2018-11-07 06:25:28,253 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:28,257 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:28,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:37,497 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:37,497 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 06:25:37,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:37,502 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:38,822 INFO L227 lantSequenceWeakener]: Weakened 444 states. On average, predicates are now at 80.06% of their original sizes. [2018-11-07 06:25:38,822 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:38,890 INFO L415 sIntCurrentIteration]: We unified 446 AI predicates to 446 [2018-11-07 06:25:38,890 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:38,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:38,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 06:25:38,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:38,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:25:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:25:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:25:38,892 INFO L87 Difference]: Start difference. First operand 3952 states and 5328 transitions. Second operand 9 states. [2018-11-07 06:25:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:55,844 INFO L93 Difference]: Finished difference Result 8633 states and 11891 transitions. [2018-11-07 06:25:55,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:25:55,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 447 [2018-11-07 06:25:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:55,873 INFO L225 Difference]: With dead ends: 8633 [2018-11-07 06:25:55,874 INFO L226 Difference]: Without dead ends: 5055 [2018-11-07 06:25:55,890 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 453 GetRequests, 439 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 06:25:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2018-11-07 06:25:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5028. [2018-11-07 06:25:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5028 states. [2018-11-07 06:25:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 6613 transitions. [2018-11-07 06:25:56,021 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 6613 transitions. Word has length 447 [2018-11-07 06:25:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:56,022 INFO L480 AbstractCegarLoop]: Abstraction has 5028 states and 6613 transitions. [2018-11-07 06:25:56,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:25:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 6613 transitions. [2018-11-07 06:25:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-11-07 06:25:56,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:56,045 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 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 06:25:56,045 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:56,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:56,046 INFO L82 PathProgramCache]: Analyzing trace with hash 420910180, now seen corresponding path program 1 times [2018-11-07 06:25:56,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:56,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:56,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:56,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:56,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:56,881 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 06:25:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 286 proven. 285 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-07 06:25:57,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:57,608 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:57,608 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-11-07 06:25:57,609 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [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 06:25:57,613 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:57,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:03,528 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:03,529 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 06:26:03,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:03,538 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:03,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:03,538 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 06:26:03,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:03,549 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:03,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 539 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-11-07 06:26:04,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 284 proven. 92 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-07 06:26:04,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:04,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:26:04,660 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:04,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:04,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:04,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:26:04,662 INFO L87 Difference]: Start difference. First operand 5028 states and 6613 transitions. Second operand 17 states. [2018-11-07 06:26:04,810 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2018-11-07 06:26:06,691 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-11-07 06:26:06,846 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-11-07 06:26:09,246 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 06:26:09,624 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 06:26:11,425 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 06:26:12,889 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2018-11-07 06:26:14,570 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-11-07 06:26:14,835 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2018-11-07 06:26:15,146 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-11-07 06:26:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:16,380 INFO L93 Difference]: Finished difference Result 14055 states and 19646 transitions. [2018-11-07 06:26:16,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 06:26:16,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 514 [2018-11-07 06:26:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:16,420 INFO L225 Difference]: With dead ends: 14055 [2018-11-07 06:26:16,421 INFO L226 Difference]: Without dead ends: 9401 [2018-11-07 06:26:16,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 06:26:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9401 states. [2018-11-07 06:26:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9401 to 9242. [2018-11-07 06:26:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9242 states. [2018-11-07 06:26:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 11793 transitions. [2018-11-07 06:26:16,655 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 11793 transitions. Word has length 514 [2018-11-07 06:26:16,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:16,656 INFO L480 AbstractCegarLoop]: Abstraction has 9242 states and 11793 transitions. [2018-11-07 06:26:16,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:26:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 11793 transitions. [2018-11-07 06:26:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-11-07 06:26:16,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:16,690 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:16,690 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:16,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 920023748, now seen corresponding path program 1 times [2018-11-07 06:26:16,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:16,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:16,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 422 proven. 481 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-11-07 06:26:18,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:18,300 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:18,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 581 with the following transitions: [2018-11-07 06:26:18,300 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [746], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:18,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:18,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:28,385 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:28,385 INFO L272 AbstractInterpreter]: Visited 145 different actions 581 times. Merged at 10 different actions 37 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:28,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:28,391 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:28,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:28,391 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 06:26:28,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:28,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:28,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:28,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-11-07 06:26:28,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-11-07 06:26:29,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:29,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 18 [2018-11-07 06:26:29,103 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:29,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:29,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:29,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:26:29,105 INFO L87 Difference]: Start difference. First operand 9242 states and 11793 transitions. Second operand 17 states. [2018-11-07 06:26:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:37,553 INFO L93 Difference]: Finished difference Result 18303 states and 24776 transitions. [2018-11-07 06:26:37,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 06:26:37,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 580 [2018-11-07 06:26:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:37,591 INFO L225 Difference]: With dead ends: 18303 [2018-11-07 06:26:37,592 INFO L226 Difference]: Without dead ends: 8585 [2018-11-07 06:26:37,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1241 GetRequests, 1182 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=697, Invalid=2725, Unknown=0, NotChecked=0, Total=3422 [2018-11-07 06:26:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2018-11-07 06:26:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8052. [2018-11-07 06:26:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8052 states. [2018-11-07 06:26:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8052 states to 8052 states and 9335 transitions. [2018-11-07 06:26:37,829 INFO L78 Accepts]: Start accepts. Automaton has 8052 states and 9335 transitions. Word has length 580 [2018-11-07 06:26:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:37,831 INFO L480 AbstractCegarLoop]: Abstraction has 8052 states and 9335 transitions. [2018-11-07 06:26:37,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:26:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8052 states and 9335 transitions. [2018-11-07 06:26:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2018-11-07 06:26:37,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:37,952 INFO L375 BasicCegarLoop]: trace histogram [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, 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 06:26:37,952 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:37,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:37,953 INFO L82 PathProgramCache]: Analyzing trace with hash 894638304, now seen corresponding path program 1 times [2018-11-07 06:26:37,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:37,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:37,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:37,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:37,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 423 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-11-07 06:26:38,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:38,892 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:38,893 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 633 with the following transitions: [2018-11-07 06:26:38,893 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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 06:26:38,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:38,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:44,807 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:44,807 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:44,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:44,812 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:44,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:44,812 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 06:26:44,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:44,821 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:44,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 766 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2018-11-07 06:26:45,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:45,632 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 06:26:45,745 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 06:26:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 423 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-11-07 06:26:46,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:46,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 06:26:46,305 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:46,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:26:46,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:26:46,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:26:46,307 INFO L87 Difference]: Start difference. First operand 8052 states and 9335 transitions. Second operand 7 states. [2018-11-07 06:26:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:48,764 INFO L93 Difference]: Finished difference Result 23288 states and 30417 transitions. [2018-11-07 06:26:48,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 06:26:48,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2018-11-07 06:26:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:48,861 INFO L225 Difference]: With dead ends: 23288 [2018-11-07 06:26:48,862 INFO L226 Difference]: Without dead ends: 15610 [2018-11-07 06:26:48,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1267 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:26:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15610 states. [2018-11-07 06:26:49,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15610 to 15243. [2018-11-07 06:26:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15243 states. [2018-11-07 06:26:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 17647 transitions. [2018-11-07 06:26:49,309 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 17647 transitions. Word has length 632 [2018-11-07 06:26:49,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:49,311 INFO L480 AbstractCegarLoop]: Abstraction has 15243 states and 17647 transitions. [2018-11-07 06:26:49,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 06:26:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 17647 transitions. [2018-11-07 06:26:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-11-07 06:26:49,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:49,324 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:26:49,325 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:49,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:49,325 INFO L82 PathProgramCache]: Analyzing trace with hash -207159856, now seen corresponding path program 1 times [2018-11-07 06:26:49,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:49,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:49,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:49,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:49,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 422 proven. 542 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-11-07 06:26:51,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:51,067 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:51,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 689 with the following transitions: [2018-11-07 06:26:51,067 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [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], [910], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:51,071 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:51,071 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:57,183 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:57,184 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:57,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:57,191 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:57,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:57,191 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 06:26:57,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:57,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:57,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2018-11-07 06:26:57,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 479 proven. 92 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2018-11-07 06:26:58,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:58,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:26:58,636 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:58,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:58,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:26:58,638 INFO L87 Difference]: Start difference. First operand 15243 states and 17647 transitions. Second operand 17 states. [2018-11-07 06:26:59,545 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2018-11-07 06:27:03,453 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-11-07 06:27:03,658 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2018-11-07 06:27:04,903 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-11-07 06:27:06,069 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2018-11-07 06:27:07,049 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-11-07 06:27:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:07,912 INFO L93 Difference]: Finished difference Result 32984 states and 39848 transitions. [2018-11-07 06:27:07,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-07 06:27:07,913 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 688 [2018-11-07 06:27:07,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:07,983 INFO L225 Difference]: With dead ends: 32984 [2018-11-07 06:27:07,983 INFO L226 Difference]: Without dead ends: 18115 [2018-11-07 06:27:08,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1405 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=819, Invalid=3341, Unknown=0, NotChecked=0, Total=4160 [2018-11-07 06:27:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2018-11-07 06:27:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 17963. [2018-11-07 06:27:08,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17963 states. [2018-11-07 06:27:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17963 states to 17963 states and 20736 transitions. [2018-11-07 06:27:08,457 INFO L78 Accepts]: Start accepts. Automaton has 17963 states and 20736 transitions. Word has length 688 [2018-11-07 06:27:08,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:08,458 INFO L480 AbstractCegarLoop]: Abstraction has 17963 states and 20736 transitions. [2018-11-07 06:27:08,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17963 states and 20736 transitions. [2018-11-07 06:27:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-11-07 06:27:08,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:08,473 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:08,473 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:08,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:08,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1202378000, now seen corresponding path program 1 times [2018-11-07 06:27:08,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:08,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:08,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:08,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:08,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 604 proven. 92 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-11-07 06:27:09,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:09,261 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:09,261 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 793 with the following transitions: [2018-11-07 06:27:09,262 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [854], [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 06:27:09,265 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:09,265 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:15,036 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:15,036 INFO L272 AbstractInterpreter]: Visited 193 different actions 776 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:27:15,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:15,046 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:15,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:15,046 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:15,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:15,055 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:15,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 1035 proven. 2 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-11-07 06:27:15,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 604 proven. 92 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2018-11-07 06:27:16,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:16,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-11-07 06:27:16,330 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:16,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:27:16,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:27:16,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:27:16,331 INFO L87 Difference]: Start difference. First operand 17963 states and 20736 transitions. Second operand 6 states. [2018-11-07 06:27:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:18,202 INFO L93 Difference]: Finished difference Result 36922 states and 42758 transitions. [2018-11-07 06:27:18,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 06:27:18,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 792 [2018-11-07 06:27:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:18,269 INFO L225 Difference]: With dead ends: 36922 [2018-11-07 06:27:18,269 INFO L226 Difference]: Without dead ends: 19333 [2018-11-07 06:27:18,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1586 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-07 06:27:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19333 states. [2018-11-07 06:27:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19333 to 18963. [2018-11-07 06:27:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18963 states. [2018-11-07 06:27:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18963 states to 18963 states and 21718 transitions. [2018-11-07 06:27:18,762 INFO L78 Accepts]: Start accepts. Automaton has 18963 states and 21718 transitions. Word has length 792 [2018-11-07 06:27:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:18,763 INFO L480 AbstractCegarLoop]: Abstraction has 18963 states and 21718 transitions. [2018-11-07 06:27:18,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:27:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18963 states and 21718 transitions. [2018-11-07 06:27:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-11-07 06:27:18,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:18,784 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:18,784 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:18,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:18,785 INFO L82 PathProgramCache]: Analyzing trace with hash -19507885, now seen corresponding path program 1 times [2018-11-07 06:27:18,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:18,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:18,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:18,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:18,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 478 proven. 1097 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2018-11-07 06:27:21,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:21,659 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:21,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 888 with the following transitions: [2018-11-07 06:27:21,659 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [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], [522], [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], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:21,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:21,664 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 06:27:25,548 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 06:27:25,549 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 06:27:25,549 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:27:25,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:25,549 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:25,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:25,606 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:25,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:25,844 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 06:27:26,045 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:26,046 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:27:26,050 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:27:26,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:26 BoogieIcfgContainer [2018-11-07 06:27:26,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:27:26,051 INFO L168 Benchmark]: Toolchain (without parser) took 229982.96 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 452.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:26,052 INFO L168 Benchmark]: CDTParser took 0.28 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 06:27:26,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.58 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 06:27:26,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 169.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:26,054 INFO L168 Benchmark]: Boogie Preprocessor took 145.40 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 06:27:26,054 INFO L168 Benchmark]: RCFGBuilder took 3717.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.9 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:26,055 INFO L168 Benchmark]: TraceAbstraction took 225218.17 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 350.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:26,065 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 727.58 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 169.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.40 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 3717.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.9 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225218.17 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 350.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was analyzing trace of length 888 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 225.1s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 128.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1965 SDtfs, 24351 SDslu, 2863 SDs, 0 SdLazy, 29786 SolverSat, 5475 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 8422 GetRequests, 8127 SyntacticMatches, 10 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3762 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18963occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.1s AbstIntTime, 10 AbstIntIterations, 3 AbstIntStrong, 0.9970989899435861 AbsIntWeakeningRatio, 0.09533267130089375 AbsIntAvgWeakeningVarsNumRemoved, 15.906653426017876 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1817 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 8477 NumberOfCodeBlocks, 8477 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 11969 ConstructedInterpolants, 0 QuantifiedInterpolants, 31288863 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5229 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 16768/19394 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown