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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:08:17,991 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:08:17,993 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:08:18,006 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:08:18,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:08:18,007 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:08:18,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:08:18,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:08:18,015 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:08:18,016 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:08:18,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:08:18,019 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:08:18,020 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:08:18,021 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:08:18,027 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:08:18,028 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:08:18,029 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:08:18,030 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:08:18,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:08:18,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:08:18,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:08:18,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:08:18,044 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 04:08:18,050 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:08:18,050 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:08:18,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:08:18,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:08:18,054 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:08:18,082 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:08:18,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:08:18,084 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:08:18,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:08:18,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:08:18,085 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:08:18,085 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:08:18,085 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:08:18,086 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:08:18,086 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:08:18,087 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:08:18,087 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:08:18,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:08:18,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:08:18,088 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:08:18,088 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:08:18,088 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:08:18,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:08:18,091 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:08:18,091 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:08:18,091 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:08:18,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:08:18,091 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:08:18,092 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:08:18,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:08:18,093 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:08:18,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:08:18,093 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:08:18,093 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:08:18,093 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:08:18,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:08:18,094 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:08:18,094 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:08:18,094 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:08:18,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:08:18,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:08:18,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:08:18,190 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:08:18,190 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:08:18,191 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-11-07 04:08:18,264 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c14dd9/55f86f7fbf2e4ccdb284beee358049db/FLAG5e206dadb [2018-11-07 04:08:19,023 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:08:19,024 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-11-07 04:08:19,057 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c14dd9/55f86f7fbf2e4ccdb284beee358049db/FLAG5e206dadb [2018-11-07 04:08:19,078 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c14dd9/55f86f7fbf2e4ccdb284beee358049db [2018-11-07 04:08:19,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:08:19,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:08:19,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:08:19,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:08:19,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:08:19,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:19" (1/1) ... [2018-11-07 04:08:19,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:19, skipping insertion in model container [2018-11-07 04:08:19,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:19" (1/1) ... [2018-11-07 04:08:19,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:08:19,248 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:08:20,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:08:20,291 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:08:20,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:08:20,797 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:08:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20 WrapperNode [2018-11-07 04:08:20,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:08:20,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:08:20,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:08:20,800 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:08:20,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:08:21,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:08:21,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:08:21,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:08:21,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (1/1) ... [2018-11-07 04:08:21,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:08:21,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:08:21,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:08:21,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:08:21,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (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 04:08:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:08:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:08:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:08:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:08:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:08:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:08:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:08:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:08:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:08:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:08:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:08:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:08:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:08:28,976 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:08:28,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:28 BoogieIcfgContainer [2018-11-07 04:08:28,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:08:28,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:08:28,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:08:28,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:08:28,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:19" (1/3) ... [2018-11-07 04:08:28,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f2f69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:28, skipping insertion in model container [2018-11-07 04:08:28,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:20" (2/3) ... [2018-11-07 04:08:28,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f2f69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:28, skipping insertion in model container [2018-11-07 04:08:28,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:28" (3/3) ... [2018-11-07 04:08:28,986 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label44_true-unreach-call.c [2018-11-07 04:08:28,997 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:08:29,007 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:08:29,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:08:29,080 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:08:29,080 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:08:29,081 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:08:29,081 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:08:29,081 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:08:29,081 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:08:29,081 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:08:29,082 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:08:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 04:08:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 04:08:29,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:08:29,139 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:08:29,141 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:08:29,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1357695353, now seen corresponding path program 1 times [2018-11-07 04:08:29,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:08:29,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:29,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:08:29,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:29,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:08:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:08:29,631 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 04:08:29,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:08:29,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:08:29,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:29,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:08:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:08:29,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:08:29,667 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 04:08:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:08:39,995 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 04:08:39,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:08:39,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-07 04:08:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:08:40,037 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 04:08:40,037 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 04:08:40,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:08:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 04:08:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-11-07 04:08:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 04:08:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-11-07 04:08:40,227 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 39 [2018-11-07 04:08:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:08:40,228 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-11-07 04:08:40,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:08:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-11-07 04:08:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 04:08:40,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:08:40,236 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:40,237 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:08:40,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:40,237 INFO L82 PathProgramCache]: Analyzing trace with hash -947150568, now seen corresponding path program 1 times [2018-11-07 04:08:40,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:08:40,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:40,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:08:40,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:40,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:08:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:08:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:08:40,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:08:40,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 04:08:40,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:40,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:08:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:08:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 04:08:40,590 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-11-07 04:08:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:08:52,095 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-11-07 04:08:52,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:08:52,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-11-07 04:08:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:08:52,121 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 04:08:52,122 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 04:08:52,130 INFO L604 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 [2018-11-07 04:08:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 04:08:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-11-07 04:08:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-11-07 04:08:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-11-07 04:08:52,245 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 109 [2018-11-07 04:08:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:08:52,246 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-11-07 04:08:52,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:08:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-11-07 04:08:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 04:08:52,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:08:52,259 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:08:52,260 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:08:52,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:52,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1923837536, now seen corresponding path program 1 times [2018-11-07 04:08:52,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:08:52,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:52,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:08:52,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:52,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:08:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:08:52,589 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:08:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:08:52,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:08:52,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:08:52,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:52,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:08:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:08:52,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:08:52,969 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-11-07 04:09:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:09:00,903 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-11-07 04:09:00,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:09:00,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 04:09:00,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:09:00,960 INFO L225 Difference]: With dead ends: 10279 [2018-11-07 04:09:00,960 INFO L226 Difference]: Without dead ends: 7355 [2018-11-07 04:09:00,978 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:09:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-11-07 04:09:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-11-07 04:09:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-11-07 04:09:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-11-07 04:09:01,174 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 113 [2018-11-07 04:09:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:09:01,174 INFO L480 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-11-07 04:09:01,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:09:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-11-07 04:09:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 04:09:01,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:09:01,178 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:01,178 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:09:01,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash 397539053, now seen corresponding path program 1 times [2018-11-07 04:09:01,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:09:01,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:01,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:09:01,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:01,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:09:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:09:01,437 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:09:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:09:01,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:09:01,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:09:01,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:09:01,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:09:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:09:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:09:01,688 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-11-07 04:09:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:09:09,474 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-11-07 04:09:09,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:09:09,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 04:09:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:09:09,543 INFO L225 Difference]: With dead ends: 18993 [2018-11-07 04:09:09,543 INFO L226 Difference]: Without dead ends: 11703 [2018-11-07 04:09:09,581 INFO L604 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 [2018-11-07 04:09:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-11-07 04:09:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-11-07 04:09:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-11-07 04:09:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-11-07 04:09:09,857 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 134 [2018-11-07 04:09:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:09:09,857 INFO L480 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-11-07 04:09:09,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:09:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-11-07 04:09:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 04:09:09,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:09:09,861 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:09:09,861 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:09:09,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1776632544, now seen corresponding path program 1 times [2018-11-07 04:09:09,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:09:09,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:09,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:09:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:09,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:09:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:09:10,121 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:09:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:09:10,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:09:10,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:09:10,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:09:10,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:09:10,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:09:10,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:09:10,521 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 6 states. [2018-11-07 04:09:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:09:15,973 INFO L93 Difference]: Finished difference Result 27658 states and 38922 transitions. [2018-11-07 04:09:15,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:09:15,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-11-07 04:09:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:09:16,047 INFO L225 Difference]: With dead ends: 27658 [2018-11-07 04:09:16,047 INFO L226 Difference]: Without dead ends: 16025 [2018-11-07 04:09:16,091 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:09:16,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16025 states. [2018-11-07 04:09:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16025 to 15947. [2018-11-07 04:09:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15947 states. [2018-11-07 04:09:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15947 states to 15947 states and 19810 transitions. [2018-11-07 04:09:16,422 INFO L78 Accepts]: Start accepts. Automaton has 15947 states and 19810 transitions. Word has length 177 [2018-11-07 04:09:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:09:16,423 INFO L480 AbstractCegarLoop]: Abstraction has 15947 states and 19810 transitions. [2018-11-07 04:09:16,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:09:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15947 states and 19810 transitions. [2018-11-07 04:09:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 04:09:16,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:09:16,429 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 04:09:16,430 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:09:16,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 952767299, now seen corresponding path program 1 times [2018-11-07 04:09:16,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:09:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:16,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:09:16,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:16,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:09:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:09:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 04:09:16,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:09:16,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:09:16,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:09:16,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:09:16,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:09:16,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:09:16,896 INFO L87 Difference]: Start difference. First operand 15947 states and 19810 transitions. Second operand 4 states. [2018-11-07 04:09:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:09:24,115 INFO L93 Difference]: Finished difference Result 60752 states and 78092 transitions. [2018-11-07 04:09:24,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:09:24,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2018-11-07 04:09:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:09:24,294 INFO L225 Difference]: With dead ends: 60752 [2018-11-07 04:09:24,295 INFO L226 Difference]: Without dead ends: 44811 [2018-11-07 04:09:24,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:09:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44811 states. [2018-11-07 04:09:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44811 to 44811. [2018-11-07 04:09:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44811 states. [2018-11-07 04:09:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44811 states to 44811 states and 55159 transitions. [2018-11-07 04:09:25,830 INFO L78 Accepts]: Start accepts. Automaton has 44811 states and 55159 transitions. Word has length 235 [2018-11-07 04:09:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:09:25,830 INFO L480 AbstractCegarLoop]: Abstraction has 44811 states and 55159 transitions. [2018-11-07 04:09:25,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:09:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 44811 states and 55159 transitions. [2018-11-07 04:09:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-07 04:09:25,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:09:25,853 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 04:09:25,854 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:09:25,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:25,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1249259458, now seen corresponding path program 1 times [2018-11-07 04:09:25,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:09:25,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:25,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:09:25,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:25,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:09:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:09:26,183 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:09:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:09:26,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:09:26,807 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:09:26,808 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-11-07 04:09:26,811 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1835], [1837], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:09:26,892 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:09:26,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:09:30,478 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:09:30,480 INFO L272 AbstractInterpreter]: Visited 143 different actions 143 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 04:09:30,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:30,509 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:09:32,992 INFO L227 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 04:09:32,993 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:09:33,252 INFO L415 sIntCurrentIteration]: We unified 299 AI predicates to 299 [2018-11-07 04:09:33,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:09:33,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:09:33,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-11-07 04:09:33,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:09:33,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:09:33,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:09:33,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:09:33,256 INFO L87 Difference]: Start difference. First operand 44811 states and 55159 transitions. Second operand 7 states. [2018-11-07 04:09:44,328 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 04:11:41,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:11:41,183 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:11:41,188 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:11:41,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:11:41 BoogieIcfgContainer [2018-11-07 04:11:41,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:11:41,190 INFO L168 Benchmark]: Toolchain (without parser) took 202097.59 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 795.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,191 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:11:41,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1701.74 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,194 INFO L168 Benchmark]: Boogie Preprocessor took 234.06 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,195 INFO L168 Benchmark]: RCFGBuilder took 7648.98 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: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,196 INFO L168 Benchmark]: TraceAbstraction took 192210.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 319.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:41,201 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1701.74 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 234.06 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7648.98 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: 504.1 MB). Peak memory consumption was 504.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 192210.54 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 319.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (44811states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (69256 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 192.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 178.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1870 SDtfs, 15632 SDslu, 1244 SDs, 0 SdLazy, 32259 SolverSat, 7516 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 350 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44811occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.996625224177209 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 901.3846153846154 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 944 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1107 NumberOfCodeBlocks, 1107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 786575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 340/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown