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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:06:30,847 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:06:30,850 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:06:30,864 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:06:30,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:06:30,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:06:30,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:06:30,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:06:30,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:06:30,871 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:06:30,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:06:30,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:06:30,874 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:06:30,875 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:06:30,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:06:30,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:06:30,880 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:06:30,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:06:30,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:06:30,891 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:06:30,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:06:30,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:06:30,896 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:06:30,905 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:06:30,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:06:30,931 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:06:30,933 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:06:30,933 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:06:30,933 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:06:30,933 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:06:30,934 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:06:30,934 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:06:30,934 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:06:30,934 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:06:30,934 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:06:30,935 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:06:30,939 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:06:30,939 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:06:30,939 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:06:30,939 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:06:30,939 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:06:30,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:06:30,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:06:30,941 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:06:30,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:06:30,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:06:30,942 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:06:30,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:06:30,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:06:30,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:06:30,943 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:06:30,943 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:06:30,943 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:06:30,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:06:30,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:06:30,944 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:06:30,944 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:06:30,944 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:06:30,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:06:31,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:06:31,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:06:31,014 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:06:31,014 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:06:31,015 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-23 22:06:31,076 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a052e4250/c1e84237581e4fd98e97a7ce2c1c14e3/FLAG52a6d89e2 [2018-10-23 22:06:31,706 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:06:31,710 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-23 22:06:31,747 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a052e4250/c1e84237581e4fd98e97a7ce2c1c14e3/FLAG52a6d89e2 [2018-10-23 22:06:31,769 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a052e4250/c1e84237581e4fd98e97a7ce2c1c14e3 [2018-10-23 22:06:31,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:06:31,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:06:31,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:06:31,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:06:31,794 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:06:31,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:31" (1/1) ... [2018-10-23 22:06:31,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b394b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:31, skipping insertion in model container [2018-10-23 22:06:31,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:31" (1/1) ... [2018-10-23 22:06:31,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:06:31,900 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:06:32,560 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:06:32,564 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:06:32,729 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:06:32,747 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:06:32,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32 WrapperNode [2018-10-23 22:06:32,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:06:32,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:06:32,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:06:32,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:06:32,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:32,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:06:33,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:06:33,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:06:33,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:06:33,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (1/1) ... [2018-10-23 22:06:33,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:06:33,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:06:33,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:06:33,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:06:33,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (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 [2018-10-23 22:06:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:06:33,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:06:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:06:33,255 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:06:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:06:33,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:06:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:06:33,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:06:37,969 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:06:37,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:37 BoogieIcfgContainer [2018-10-23 22:06:37,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:06:37,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:06:37,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:06:37,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:06:37,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:06:31" (1/3) ... [2018-10-23 22:06:37,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d08e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:37, skipping insertion in model container [2018-10-23 22:06:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:32" (2/3) ... [2018-10-23 22:06:37,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d08e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:37, skipping insertion in model container [2018-10-23 22:06:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:37" (3/3) ... [2018-10-23 22:06:37,980 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-10-23 22:06:37,991 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:06:38,002 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:06:38,021 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:06:38,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:06:38,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:06:38,070 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:06:38,070 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:06:38,070 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:06:38,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:06:38,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:06:38,071 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:06:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-23 22:06:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-23 22:06:38,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:38,123 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] [2018-10-23 22:06:38,126 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:38,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 90592777, now seen corresponding path program 1 times [2018-10-23 22:06:38,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:38,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:38,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:38,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:38,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:06:38,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:06:38,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:06:38,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:38,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:06:38,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:06:38,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:06:38,586 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-23 22:06:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:42,322 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-23 22:06:42,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:06:42,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-23 22:06:42,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:42,355 INFO L225 Difference]: With dead ends: 985 [2018-10-23 22:06:42,355 INFO L226 Difference]: Without dead ends: 686 [2018-10-23 22:06:42,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:06:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-23 22:06:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-23 22:06:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-23 22:06:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-23 22:06:42,478 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 21 [2018-10-23 22:06:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:42,478 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-23 22:06:42,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:06:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-23 22:06:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:06:42,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:42,485 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:06:42,485 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:42,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2082581707, now seen corresponding path program 1 times [2018-10-23 22:06:42,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:42,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:42,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:42,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:42,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:06:42,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:06:42,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:06:42,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:42,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:06:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:06:42,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:06:42,802 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-23 22:06:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:47,879 INFO L93 Difference]: Finished difference Result 2338 states and 3734 transitions. [2018-10-23 22:06:47,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:06:47,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-23 22:06:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:47,898 INFO L225 Difference]: With dead ends: 2338 [2018-10-23 22:06:47,898 INFO L226 Difference]: Without dead ends: 1658 [2018-10-23 22:06:47,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:06:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-10-23 22:06:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1641. [2018-10-23 22:06:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-10-23 22:06:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2354 transitions. [2018-10-23 22:06:48,008 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2354 transitions. Word has length 102 [2018-10-23 22:06:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:48,009 INFO L481 AbstractCegarLoop]: Abstraction has 1641 states and 2354 transitions. [2018-10-23 22:06:48,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:06:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2354 transitions. [2018-10-23 22:06:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-23 22:06:48,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:48,029 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:06:48,030 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:48,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash 712970381, now seen corresponding path program 1 times [2018-10-23 22:06:48,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:48,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:48,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:48,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:48,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:06:48,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:06:48,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:06:48,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:48,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:06:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:06:48,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:06:48,406 INFO L87 Difference]: Start difference. First operand 1641 states and 2354 transitions. Second operand 4 states. [2018-10-23 22:06:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:51,830 INFO L93 Difference]: Finished difference Result 6228 states and 9297 transitions. [2018-10-23 22:06:51,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:06:51,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-23 22:06:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:51,873 INFO L225 Difference]: With dead ends: 6228 [2018-10-23 22:06:51,874 INFO L226 Difference]: Without dead ends: 4593 [2018-10-23 22:06:51,890 INFO L605 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 [2018-10-23 22:06:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2018-10-23 22:06:52,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4563. [2018-10-23 22:06:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-23 22:06:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6349 transitions. [2018-10-23 22:06:52,040 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6349 transitions. Word has length 153 [2018-10-23 22:06:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:52,041 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 6349 transitions. [2018-10-23 22:06:52,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:06:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6349 transitions. [2018-10-23 22:06:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-23 22:06:52,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:52,049 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:06:52,049 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:52,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash -657545899, now seen corresponding path program 1 times [2018-10-23 22:06:52,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:52,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:52,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:52,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:52,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:06:52,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:06:52,318 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:06:52,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-10-23 22:06:52,321 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-23 22:06:52,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:06:52,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:06:54,327 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:06:56,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:06:56,151 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-23 22:06:56,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:56,179 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:06:58,862 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 73.12% of their original sizes. [2018-10-23 22:06:58,863 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:06:59,277 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:06:59,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:06:59,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-23 22:06:59,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:59,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:06:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:06:59,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:06:59,280 INFO L87 Difference]: Start difference. First operand 4563 states and 6349 transitions. Second operand 7 states. [2018-10-23 22:07:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:07:32,502 INFO L93 Difference]: Finished difference Result 8934 states and 12486 transitions. [2018-10-23 22:07:32,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:07:32,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-10-23 22:07:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:07:32,529 INFO L225 Difference]: With dead ends: 8934 [2018-10-23 22:07:32,529 INFO L226 Difference]: Without dead ends: 4566 [2018-10-23 22:07:32,548 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:07:32,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-23 22:07:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2018-10-23 22:07:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-23 22:07:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6335 transitions. [2018-10-23 22:07:32,690 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6335 transitions. Word has length 189 [2018-10-23 22:07:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:07:32,691 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 6335 transitions. [2018-10-23 22:07:32,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:07:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6335 transitions. [2018-10-23 22:07:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-23 22:07:32,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:07:32,698 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:07:32,698 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:07:32,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:07:32,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1702589905, now seen corresponding path program 1 times [2018-10-23 22:07:32,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:07:32,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:07:32,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:07:32,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:07:32,701 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:07:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:07:33,227 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-23 22:07:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-23 22:07:33,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:07:33,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:07:33,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-23 22:07:33,701 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [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] [2018-10-23 22:07:33,708 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:07:33,708 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:07:35,512 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:07:49,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:07:49,196 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-23 22:07:49,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:07:49,202 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:07:52,543 INFO L232 lantSequenceWeakener]: Weakened 101 states. On average, predicates are now at 73.66% of their original sizes. [2018-10-23 22:07:52,543 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:08:04,641 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:08:04,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:08:04,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [9] total 24 [2018-10-23 22:08:04,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:08:04,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 22:08:04,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 22:08:04,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-23 22:08:04,644 INFO L87 Difference]: Start difference. First operand 4564 states and 6335 transitions. Second operand 17 states. Received shutdown request... [2018-10-23 22:10:28,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 22:10:28,933 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:10:28,939 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:10:28,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:10:28 BoogieIcfgContainer [2018-10-23 22:10:28,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:10:28,940 INFO L168 Benchmark]: Toolchain (without parser) took 237156.47 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -398.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:10:28,942 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:10:28,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:10:28,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 289.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:10:28,944 INFO L168 Benchmark]: Boogie Preprocessor took 155.66 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:10:28,945 INFO L168 Benchmark]: RCFGBuilder took 4775.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:10:28,945 INFO L168 Benchmark]: TraceAbstraction took 230967.69 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 202.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 22:10:28,950 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 961.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 289.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.66 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4775.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230967.69 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 202.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (4564states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1477 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 230.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 189.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1099 SDtfs, 4101 SDslu, 813 SDs, 0 SdLazy, 6475 SolverSat, 1059 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 447 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4564occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952003023431599 AbsIntWeakeningRatio, 0.13333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 666.5428571428571 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 693 ConstructedInterpolants, 0 QuantifiedInterpolants, 387345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 153/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown