java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:49:13,777 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:49:13,779 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:49:13,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:49:13,793 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:49:13,794 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:49:13,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:49:13,799 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:49:13,801 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:49:13,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:49:13,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:49:13,806 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:49:13,807 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:49:13,808 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:49:13,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:49:13,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:49:13,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:49:13,818 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:49:13,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:49:13,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:49:13,832 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:49:13,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:49:13,839 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:49:13,839 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:49:13,839 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:49:13,842 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:49:13,843 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:49:13,845 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:49:13,848 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:49:13,850 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:49:13,850 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:49:13,851 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:49:13,851 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:49:13,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:49:13,853 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:49:13,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:49:13,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:49:13,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:49:13,885 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:49:13,886 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:49:13,886 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:49:13,886 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:49:13,887 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:49:13,887 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:49:13,887 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:49:13,887 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:49:13,887 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:49:13,887 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:49:13,888 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:49:13,888 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:49:13,888 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:49:13,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:49:13,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:49:13,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:49:13,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:49:13,889 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:49:13,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:49:13,890 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:49:13,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:49:13,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:49:13,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:49:13,891 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:49:13,891 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:49:13,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:49:13,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:49:13,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:49:13,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:49:13,892 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:49:13,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:49:13,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:49:13,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:49:13,893 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:49:13,893 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:49:13,944 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:49:13,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:49:13,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:49:13,961 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:49:13,961 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:49:13,962 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-27 05:49:14,020 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d88aa3682/aae5a8e8ad2a44b3a92ff1cd5bd5d718/FLAG00b68955d [2018-10-27 05:49:14,686 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:49:14,687 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-27 05:49:14,711 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d88aa3682/aae5a8e8ad2a44b3a92ff1cd5bd5d718/FLAG00b68955d [2018-10-27 05:49:14,730 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d88aa3682/aae5a8e8ad2a44b3a92ff1cd5bd5d718 [2018-10-27 05:49:14,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:49:14,744 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:49:14,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:49:14,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:49:14,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:49:14,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:14" (1/1) ... [2018-10-27 05:49:14,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483c0907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:14, skipping insertion in model container [2018-10-27 05:49:14,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:49:14" (1/1) ... [2018-10-27 05:49:14,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:49:14,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:49:15,823 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:49:15,827 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:49:16,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:49:16,272 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:49:16,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16 WrapperNode [2018-10-27 05:49:16,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:49:16,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:49:16,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:49:16,275 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:49:16,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:49:16,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:49:16,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:49:16,724 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:49:16,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:16,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... [2018-10-27 05:49:17,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:49:17,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:49:17,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:49:17,023 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:49:17,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:49:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:49:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:49:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 05:49:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 05:49:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:49:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:49:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:49:17,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:49:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:49:17,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:49:31,068 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:49:31,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:31 BoogieIcfgContainer [2018-10-27 05:49:31,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:49:31,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:49:31,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:49:31,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:49:31,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:49:14" (1/3) ... [2018-10-27 05:49:31,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358acc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:31, skipping insertion in model container [2018-10-27 05:49:31,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:49:16" (2/3) ... [2018-10-27 05:49:31,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358acc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:49:31, skipping insertion in model container [2018-10-27 05:49:31,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:49:31" (3/3) ... [2018-10-27 05:49:31,079 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33_false-unreach-call.c [2018-10-27 05:49:31,088 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:49:31,096 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:49:31,116 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:49:31,172 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:49:31,172 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:49:31,173 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:49:31,173 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:49:31,173 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:49:31,173 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:49:31,173 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:49:31,173 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:49:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 05:49:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 05:49:31,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:31,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:31,216 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:49:31,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 137132598, now seen corresponding path program 1 times [2018-10-27 05:49:31,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:31,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:31,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:31,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:31,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:49:31,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:31,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:49:31,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:31,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:49:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:49:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:31,653 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 05:49:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:43,626 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-27 05:49:43,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:49:43,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-27 05:49:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:43,667 INFO L225 Difference]: With dead ends: 2142 [2018-10-27 05:49:43,667 INFO L226 Difference]: Without dead ends: 1532 [2018-10-27 05:49:43,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:49:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-27 05:49:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-27 05:49:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-27 05:49:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-27 05:49:43,822 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 23 [2018-10-27 05:49:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:43,823 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-27 05:49:43,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:49:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-27 05:49:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-27 05:49:43,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:43,829 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:43,830 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:49:43,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:43,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2044944537, now seen corresponding path program 1 times [2018-10-27 05:49:43,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:43,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:43,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:43,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:43,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:49:44,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:49:44,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:49:44,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:49:44,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:49:44,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:49:44,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:49:44,235 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-27 05:49:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:49:54,847 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-27 05:49:54,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:49:54,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-27 05:49:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:49:54,876 INFO L225 Difference]: With dead ends: 4424 [2018-10-27 05:49:54,876 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 05:49:54,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:49:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 05:49:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-27 05:49:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-27 05:49:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-27 05:49:54,999 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 95 [2018-10-27 05:49:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:49:55,000 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-27 05:49:55,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:49:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-27 05:49:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 05:49:55,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:49:55,004 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:49:55,004 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:49:55,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:55,005 INFO L82 PathProgramCache]: Analyzing trace with hash -552688383, now seen corresponding path program 1 times [2018-10-27 05:49:55,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:49:55,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:55,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:55,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:49:55,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:49:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:49:55,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:49:55,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:49:55,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 99 with the following transitions: [2018-10-27 05:49:55,257 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 05:49:55,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:49:55,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:49:56,271 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:49:56,273 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 05:49:56,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:49:56,319 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:49:56,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:49:56,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:49:56,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:49:56,343 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:49:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:49:56,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:50:25,291 WARN L179 SmtUtils]: Spent 24.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-27 05:50:45,615 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-27 05:50:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:50:45,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:50:52,589 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-27 05:50:52,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-27 05:50:55,194 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-27 05:50:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:50:55,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 05:50:55,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 05:50:55,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:50:55,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:50:55,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:50:55,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=158, Unknown=6, NotChecked=0, Total=210 [2018-10-27 05:50:55,546 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-10-27 05:51:57,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:51:57,147 INFO L93 Difference]: Finished difference Result 11202 states and 18164 transitions. [2018-10-27 05:51:57,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:51:57,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-27 05:51:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:51:57,218 INFO L225 Difference]: With dead ends: 11202 [2018-10-27 05:51:57,219 INFO L226 Difference]: Without dead ends: 8333 [2018-10-27 05:51:57,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=46, Invalid=158, Unknown=6, NotChecked=0, Total=210 [2018-10-27 05:51:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8333 states. [2018-10-27 05:51:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8333 to 8244. [2018-10-27 05:51:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8244 states. [2018-10-27 05:51:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 12731 transitions. [2018-10-27 05:51:57,531 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 12731 transitions. Word has length 98 [2018-10-27 05:51:57,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:51:57,532 INFO L481 AbstractCegarLoop]: Abstraction has 8244 states and 12731 transitions. [2018-10-27 05:51:57,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:51:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 12731 transitions. [2018-10-27 05:51:57,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-27 05:51:57,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:51:57,547 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:51:57,548 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:51:57,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:51:57,549 INFO L82 PathProgramCache]: Analyzing trace with hash -317243459, now seen corresponding path program 1 times [2018-10-27 05:51:57,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:51:57,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:57,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:51:57,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:51:57,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:51:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:51:57,946 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:51:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:51:58,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:51:58,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:51:58,197 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:51:58,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:51:58,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:51:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:51:58,198 INFO L87 Difference]: Start difference. First operand 8244 states and 12731 transitions. Second operand 6 states. [2018-10-27 05:52:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:52:08,308 INFO L93 Difference]: Finished difference Result 20172 states and 31916 transitions. [2018-10-27 05:52:08,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:52:08,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-27 05:52:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:52:08,400 INFO L225 Difference]: With dead ends: 20172 [2018-10-27 05:52:08,400 INFO L226 Difference]: Without dead ends: 11934 [2018-10-27 05:52:08,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:52:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11934 states. [2018-10-27 05:52:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11934 to 11831. [2018-10-27 05:52:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11831 states. [2018-10-27 05:52:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11831 states to 11831 states and 15841 transitions. [2018-10-27 05:52:08,757 INFO L78 Accepts]: Start accepts. Automaton has 11831 states and 15841 transitions. Word has length 173 [2018-10-27 05:52:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:52:08,757 INFO L481 AbstractCegarLoop]: Abstraction has 11831 states and 15841 transitions. [2018-10-27 05:52:08,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:52:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 11831 states and 15841 transitions. [2018-10-27 05:52:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-27 05:52:08,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:52:08,764 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:52:08,765 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:52:08,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:08,765 INFO L82 PathProgramCache]: Analyzing trace with hash -318686824, now seen corresponding path program 1 times [2018-10-27 05:52:08,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:52:08,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:08,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:08,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:08,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:52:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 80 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 05:52:09,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:09,074 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:52:09,075 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-27 05:52:09,075 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 05:52:09,080 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:52:09,080 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:52:09,372 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:52:09,373 INFO L272 AbstractInterpreter]: Visited 97 different actions 193 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 05:52:09,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:09,411 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:52:09,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:09,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:52:09,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:09,428 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:52:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:09,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:52:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 05:52:09,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:52:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 05:52:10,243 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:52:10,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 05:52:10,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:52:10,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:52:10,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:52:10,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:52:10,245 INFO L87 Difference]: Start difference. First operand 11831 states and 15841 transitions. Second operand 3 states. [2018-10-27 05:52:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:52:16,354 INFO L93 Difference]: Finished difference Result 24092 states and 32397 transitions. [2018-10-27 05:52:16,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:52:16,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-10-27 05:52:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:52:16,411 INFO L225 Difference]: With dead ends: 24092 [2018-10-27 05:52:16,411 INFO L226 Difference]: Without dead ends: 12267 [2018-10-27 05:52:16,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 380 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:52:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12267 states. [2018-10-27 05:52:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12267 to 12267. [2018-10-27 05:52:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12267 states. [2018-10-27 05:52:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12267 states to 12267 states and 15679 transitions. [2018-10-27 05:52:16,739 INFO L78 Accepts]: Start accepts. Automaton has 12267 states and 15679 transitions. Word has length 190 [2018-10-27 05:52:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:52:16,740 INFO L481 AbstractCegarLoop]: Abstraction has 12267 states and 15679 transitions. [2018-10-27 05:52:16,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:52:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 12267 states and 15679 transitions. [2018-10-27 05:52:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-27 05:52:16,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:52:16,756 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:52:16,757 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:52:16,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:16,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2077464317, now seen corresponding path program 1 times [2018-10-27 05:52:16,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:52:16,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:16,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:16,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:16,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:52:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 05:52:17,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:17,240 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:52:17,242 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-27 05:52:17,242 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 05:52:17,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:52:17,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:52:17,549 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:52:17,549 INFO L272 AbstractInterpreter]: Visited 109 different actions 220 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 05:52:17,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:17,584 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:52:17,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:17,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:52:17,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:17,599 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:52:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:17,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:52:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 05:52:17,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:52:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 05:52:18,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:52:18,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-10-27 05:52:18,361 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:52:18,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:52:18,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:52:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:52:18,363 INFO L87 Difference]: Start difference. First operand 12267 states and 15679 transitions. Second operand 6 states. [2018-10-27 05:52:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:52:35,448 INFO L93 Difference]: Finished difference Result 36461 states and 49659 transitions. [2018-10-27 05:52:35,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-27 05:52:35,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2018-10-27 05:52:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:52:35,567 INFO L225 Difference]: With dead ends: 36461 [2018-10-27 05:52:35,568 INFO L226 Difference]: Without dead ends: 24200 [2018-10-27 05:52:35,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 580 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-27 05:52:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24200 states. [2018-10-27 05:52:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24200 to 23282. [2018-10-27 05:52:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23282 states. [2018-10-27 05:52:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23282 states to 23282 states and 28204 transitions. [2018-10-27 05:52:36,175 INFO L78 Accepts]: Start accepts. Automaton has 23282 states and 28204 transitions. Word has length 289 [2018-10-27 05:52:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:52:36,176 INFO L481 AbstractCegarLoop]: Abstraction has 23282 states and 28204 transitions. [2018-10-27 05:52:36,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:52:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 23282 states and 28204 transitions. [2018-10-27 05:52:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-27 05:52:36,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:52:36,190 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:52:36,191 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:52:36,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:36,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1119080016, now seen corresponding path program 1 times [2018-10-27 05:52:36,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:52:36,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:36,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:36,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:52:36,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:52:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:36,642 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-27 05:52:37,162 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-10-27 05:52:37,768 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-10-27 05:52:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 16 proven. 207 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 05:52:38,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:38,147 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:52:38,147 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-27 05:52:38,149 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 05:52:38,153 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:52:38,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:52:38,975 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:52:38,975 INFO L272 AbstractInterpreter]: Visited 120 different actions 346 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 05:52:39,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:52:39,012 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:52:39,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:52:39,012 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:52:39,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:52:39,023 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:52:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:52:39,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:52:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 05:52:39,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:52:39,664 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-10-27 05:52:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 126 proven. 98 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 05:52:39,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:52:39,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-10-27 05:52:39,941 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:52:39,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:52:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:52:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:52:39,944 INFO L87 Difference]: Start difference. First operand 23282 states and 28204 transitions. Second operand 18 states. [2018-10-27 05:52:42,022 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 15 [2018-10-27 05:52:48,352 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-10-27 05:53:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:53:19,046 INFO L93 Difference]: Finished difference Result 88687 states and 108652 transitions. [2018-10-27 05:53:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-27 05:53:19,046 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 307 [2018-10-27 05:53:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:53:19,501 INFO L225 Difference]: With dead ends: 88687 [2018-10-27 05:53:19,501 INFO L226 Difference]: Without dead ends: 59819 [2018-10-27 05:53:19,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 640 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2297 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1298, Invalid=5344, Unknown=0, NotChecked=0, Total=6642 [2018-10-27 05:53:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59819 states. [2018-10-27 05:53:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59819 to 55856. [2018-10-27 05:53:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55856 states. [2018-10-27 05:53:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55856 states to 55856 states and 66322 transitions. [2018-10-27 05:53:20,692 INFO L78 Accepts]: Start accepts. Automaton has 55856 states and 66322 transitions. Word has length 307 [2018-10-27 05:53:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:53:20,693 INFO L481 AbstractCegarLoop]: Abstraction has 55856 states and 66322 transitions. [2018-10-27 05:53:20,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:53:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 55856 states and 66322 transitions. [2018-10-27 05:53:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-27 05:53:20,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:53:20,713 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:53:20,713 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:53:20,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:53:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash 490104554, now seen corresponding path program 1 times [2018-10-27 05:53:20,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:53:20,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:53:20,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:53:20,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:53:20,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:53:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:53:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 05:53:21,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:53:21,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:53:21,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:53:21,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:53:21,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:53:21,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:53:21,192 INFO L87 Difference]: Start difference. First operand 55856 states and 66322 transitions. Second operand 4 states. Received shutdown request... [2018-10-27 05:53:24,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:53:24,307 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:53:24,312 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:53:24,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:53:24 BoogieIcfgContainer [2018-10-27 05:53:24,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:53:24,314 INFO L168 Benchmark]: Toolchain (without parser) took 249570.85 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -598.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,315 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:53:24,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1527.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 449.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,317 INFO L168 Benchmark]: Boogie Preprocessor took 298.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,318 INFO L168 Benchmark]: RCFGBuilder took 14048.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.4 MB). Peak memory consumption was 485.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,319 INFO L168 Benchmark]: TraceAbstraction took 233241.65 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 939.0 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -301.8 MB). Peak memory consumption was 637.2 MB. Max. memory is 7.1 GB. [2018-10-27 05:53:24,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1527.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 449.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 298.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14048.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 485.4 MB). Peak memory consumption was 485.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233241.65 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 939.0 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -301.8 MB). Peak memory consumption was 637.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 56). Cancelled while BasicCegarLoop was constructing difference of abstraction (55856states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (9013 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 233.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 160.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2559 SDtfs, 35173 SDslu, 2732 SDs, 0 SdLazy, 33689 SolverSat, 12218 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 144.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1945 GetRequests, 1801 SyntacticMatches, 17 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 64.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55856occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.6s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 5122 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 65.1s InterpolantComputationTime, 2399 NumberOfCodeBlocks, 2399 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3267 ConstructedInterpolants, 97 QuantifiedInterpolants, 3295090 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1694 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 1941/2306 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown