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/Problem11_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:27:07,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:27:07,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:27:07,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:27:07,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:27:07,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:27:07,907 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:27:07,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:27:07,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:27:07,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:27:07,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:27:07,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:27:07,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:27:07,915 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:27:07,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:27:07,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:27:07,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:27:07,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:27:07,932 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:27:07,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:27:07,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:27:07,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:27:07,945 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:27:07,945 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:27:07,946 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:27:07,947 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:27:07,950 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:27:07,951 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:27:07,951 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:27:07,954 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:27:07,955 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:27:07,955 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:27:07,960 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 [2018-10-25 01:27:07,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:27:07,984 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:27:07,985 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:27:07,985 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:27:07,985 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:27:07,985 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:27:07,985 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:27:07,986 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:27:07,986 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:27:07,986 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:27:07,986 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:27:07,986 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:27:07,987 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:27:07,987 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:27:07,988 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:27:07,988 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:27:07,988 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:27:07,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:27:07,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:27:07,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:27:07,989 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:27:07,989 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:27:07,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:27:07,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:27:07,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:27:07,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:27:07,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:27:07,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:27:07,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:27:07,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:27:07,991 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:27:07,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:27:07,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:27:07,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:27:07,991 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:27:07,992 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:27:08,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:27:08,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:27:08,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:27:08,058 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:27:08,058 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:27:08,059 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label12_true-unreach-call.c [2018-10-25 01:27:08,134 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f912e7c2c/3e0ef0be0bee457b82d69ee09a0c467e/FLAG8eb4c80f6 [2018-10-25 01:27:08,724 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:27:08,725 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label12_true-unreach-call.c [2018-10-25 01:27:08,744 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f912e7c2c/3e0ef0be0bee457b82d69ee09a0c467e/FLAG8eb4c80f6 [2018-10-25 01:27:08,765 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f912e7c2c/3e0ef0be0bee457b82d69ee09a0c467e [2018-10-25 01:27:08,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:27:08,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:27:08,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:08,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:27:08,784 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:27:08,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e34a1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08, skipping insertion in model container [2018-10-25 01:27:08,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:27:08,887 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:27:09,490 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:09,495 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:27:09,698 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:09,718 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:27:09,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09 WrapperNode [2018-10-25 01:27:09,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:09,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:09,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:27:09,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:27:09,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:09,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:10,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:27:10,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:27:10,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:27:10,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (1/1) ... [2018-10-25 01:27:10,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:27:10,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:27:10,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:27:10,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:27:10,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (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 [2018-10-25 01:27:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:27:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:27:10,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:27:10,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:27:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:27:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:27:10,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:27:10,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:27:15,195 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:27:15,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:15 BoogieIcfgContainer [2018-10-25 01:27:15,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:27:15,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:27:15,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:27:15,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:27:15,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:27:08" (1/3) ... [2018-10-25 01:27:15,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:15, skipping insertion in model container [2018-10-25 01:27:15,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:09" (2/3) ... [2018-10-25 01:27:15,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:15, skipping insertion in model container [2018-10-25 01:27:15,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:15" (3/3) ... [2018-10-25 01:27:15,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label12_true-unreach-call.c [2018-10-25 01:27:15,216 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:27:15,225 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:27:15,244 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:27:15,285 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:27:15,285 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:27:15,285 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:27:15,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:27:15,285 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:27:15,286 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:27:15,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:27:15,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:27:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:27:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-25 01:27:15,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:15,324 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] [2018-10-25 01:27:15,326 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:15,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1691247764, now seen corresponding path program 1 times [2018-10-25 01:27:15,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:15,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:15,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:15,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:15,802 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:27:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:15,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:15,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:27:15,832 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:15,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:27:15,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:27:15,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:27:15,855 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-25 01:27:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:18,337 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-10-25 01:27:18,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:27:18,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-25 01:27:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:18,369 INFO L225 Difference]: With dead ends: 790 [2018-10-25 01:27:18,369 INFO L226 Difference]: Without dead ends: 495 [2018-10-25 01:27:18,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:27:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-10-25 01:27:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-10-25 01:27:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-10-25 01:27:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-10-25 01:27:18,506 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 32 [2018-10-25 01:27:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:18,506 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-10-25 01:27:18,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:27:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-10-25 01:27:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-25 01:27:18,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:18,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:18,520 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:18,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -904835348, now seen corresponding path program 1 times [2018-10-25 01:27:18,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:18,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:18,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:18,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:18,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:18,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:18,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:27:18,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:18,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:27:18,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:27:18,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:27:18,933 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-10-25 01:27:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:23,577 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-10-25 01:27:23,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:27:23,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-25 01:27:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:23,588 INFO L225 Difference]: With dead ends: 1731 [2018-10-25 01:27:23,589 INFO L226 Difference]: Without dead ends: 1249 [2018-10-25 01:27:23,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:27:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-10-25 01:27:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-10-25 01:27:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-10-25 01:27:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-10-25 01:27:23,651 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 108 [2018-10-25 01:27:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:23,651 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-10-25 01:27:23,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:27:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-10-25 01:27:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-25 01:27:23,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:23,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:23,657 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:23,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:23,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1745515455, now seen corresponding path program 1 times [2018-10-25 01:27:23,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:23,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:23,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:23,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:23,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:23,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:23,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:27:23,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:23,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:27:23,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:27:23,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:27:23,866 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-10-25 01:27:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:28,435 INFO L93 Difference]: Finished difference Result 3653 states and 6070 transitions. [2018-10-25 01:27:28,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:27:28,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-25 01:27:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:28,458 INFO L225 Difference]: With dead ends: 3653 [2018-10-25 01:27:28,458 INFO L226 Difference]: Without dead ends: 2627 [2018-10-25 01:27:28,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:27:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2018-10-25 01:27:28,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2592. [2018-10-25 01:27:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2018-10-25 01:27:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3713 transitions. [2018-10-25 01:27:28,562 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3713 transitions. Word has length 119 [2018-10-25 01:27:28,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:28,563 INFO L481 AbstractCegarLoop]: Abstraction has 2592 states and 3713 transitions. [2018-10-25 01:27:28,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:27:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3713 transitions. [2018-10-25 01:27:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-25 01:27:28,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:28,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:28,575 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:28,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash -691970105, now seen corresponding path program 1 times [2018-10-25 01:27:28,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:28,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:28,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:28,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:28,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:29,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:27:29,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:27:29,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-10-25 01:27:29,271 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:27:29,318 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:27:29,319 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:27:30,922 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:27:30,924 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:27:30,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:30,971 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:27:30,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:27:30,971 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 [2018-10-25 01:27:31,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:31,073 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:27:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:31,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:27:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:31,392 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:27:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:31,928 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:27:31,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-25 01:27:31,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:31,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:27:31,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:27:31,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:27:31,930 INFO L87 Difference]: Start difference. First operand 2592 states and 3713 transitions. Second operand 3 states. [2018-10-25 01:27:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:34,785 INFO L93 Difference]: Finished difference Result 5974 states and 8803 transitions. [2018-10-25 01:27:34,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:27:34,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2018-10-25 01:27:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:34,808 INFO L225 Difference]: With dead ends: 5974 [2018-10-25 01:27:34,808 INFO L226 Difference]: Without dead ends: 3388 [2018-10-25 01:27:34,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:27:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-10-25 01:27:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3192. [2018-10-25 01:27:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2018-10-25 01:27:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4544 transitions. [2018-10-25 01:27:34,927 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4544 transitions. Word has length 164 [2018-10-25 01:27:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:34,928 INFO L481 AbstractCegarLoop]: Abstraction has 3192 states and 4544 transitions. [2018-10-25 01:27:34,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:27:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4544 transitions. [2018-10-25 01:27:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 01:27:34,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:34,935 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:27:34,935 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:34,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:34,935 INFO L82 PathProgramCache]: Analyzing trace with hash 3845995, now seen corresponding path program 1 times [2018-10-25 01:27:34,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:34,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:34,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:34,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:34,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:35,250 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:27:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 50 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:27:35,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:27:35,643 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:27:35,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-10-25 01:27:35,644 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:27:35,651 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:27:35,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:27:35,994 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:27:35,994 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:27:36,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:36,033 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:27:36,694 INFO L232 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 73.26% of their original sizes. [2018-10-25 01:27:36,694 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:27:36,936 INFO L413 sIntCurrentIteration]: We have 188 unified AI predicates [2018-10-25 01:27:36,936 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:27:36,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:27:36,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:27:36,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:36,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:36,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:36,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:36,938 INFO L87 Difference]: Start difference. First operand 3192 states and 4544 transitions. Second operand 6 states. [2018-10-25 01:29:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:29:29,148 INFO L93 Difference]: Finished difference Result 6570 states and 9302 transitions. [2018-10-25 01:29:29,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:29:29,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-25 01:29:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:29:29,165 INFO L225 Difference]: With dead ends: 6570 [2018-10-25 01:29:29,165 INFO L226 Difference]: Without dead ends: 3384 [2018-10-25 01:29:29,174 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:29:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2018-10-25 01:29:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3382. [2018-10-25 01:29:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2018-10-25 01:29:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4743 transitions. [2018-10-25 01:29:29,245 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4743 transitions. Word has length 189 [2018-10-25 01:29:29,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:29:29,246 INFO L481 AbstractCegarLoop]: Abstraction has 3382 states and 4743 transitions. [2018-10-25 01:29:29,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:29:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4743 transitions. [2018-10-25 01:29:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-25 01:29:29,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:29:29,254 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:29:29,255 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:29:29,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:29:29,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1695218910, now seen corresponding path program 1 times [2018-10-25 01:29:29,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:29:29,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:29:29,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:29:29,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:29:29,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:29:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:29:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 151 proven. 72 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-25 01:29:29,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:29:29,840 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:29:29,840 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-10-25 01:29:29,841 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:29:29,853 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:29:29,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:29:30,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:29:30,529 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:29:30,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:29:30,538 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:29:31,855 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.57% of their original sizes. [2018-10-25 01:29:31,855 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:29:32,953 INFO L413 sIntCurrentIteration]: We have 305 unified AI predicates [2018-10-25 01:29:32,954 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:29:32,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:29:32,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-25 01:29:32,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:29:32,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:29:32,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:29:32,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:29:32,956 INFO L87 Difference]: Start difference. First operand 3382 states and 4743 transitions. Second operand 15 states. Received shutdown request... [2018-10-25 01:31:13,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:31:13,927 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:31:13,933 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:31:13,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:31:13 BoogieIcfgContainer [2018-10-25 01:31:13,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:31:13,934 INFO L168 Benchmark]: Toolchain (without parser) took 245157.35 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 582.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:13,935 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 01:31:13,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 940.25 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:13,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 295.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -822.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:13,938 INFO L168 Benchmark]: Boogie Preprocessor took 122.33 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:31:13,938 INFO L168 Benchmark]: RCFGBuilder took 5058.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:13,939 INFO L168 Benchmark]: TraceAbstraction took 238736.47 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 433.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:31:13,944 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 940.25 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 295.01 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -822.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.33 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5058.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.8 MB). Peak memory consumption was 187.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238736.47 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 433.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (3382states) and FLOYD_HOARE automaton (currently 20 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (1733 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 238.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 227.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1360 SDtfs, 4061 SDslu, 1098 SDs, 0 SdLazy, 8678 SolverSat, 1105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 861 GetRequests, 812 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3382occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9972907889946425 AbsIntWeakeningRatio, 0.1257606490872211 AbsIntAvgWeakeningVarsNumRemoved, 7.0263691683569975 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 457 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1082 NumberOfCodeBlocks, 1082 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1238 ConstructedInterpolants, 0 QuantifiedInterpolants, 670256 SizeOfPredicates, 2 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 407/553 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown