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/Problem10_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:27:18,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:27:18,031 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:27:18,042 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:27:18,043 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:27:18,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:27:18,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:27:18,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:27:18,048 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:27:18,050 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:27:18,053 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:27:18,053 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:27:18,054 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:27:18,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:27:18,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:27:18,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:27:18,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:27:18,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:27:18,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:27:18,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:27:18,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:27:18,079 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:27:18,084 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:27:18,097 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:27:18,097 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:27:18,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:27:18,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:27:18,099 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 [2018-10-27 02:27:18,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:27:18,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:27:18,129 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:27:18,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:27:18,130 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:27:18,130 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:27:18,130 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:27:18,130 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:27:18,131 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:27:18,131 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:27:18,131 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:27:18,131 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:27:18,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:27:18,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:27:18,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:27:18,134 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:27:18,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:27:18,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:27:18,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:27:18,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:27:18,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:27:18,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:27:18,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:27:18,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:27:18,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:27:18,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:27:18,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:27:18,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:27:18,137 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:27:18,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:27:18,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:27:18,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:27:18,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:27:18,139 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:27:18,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:27:18,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:27:18,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:27:18,204 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:27:18,205 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:27:18,206 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53_true-unreach-call.c [2018-10-27 02:27:18,286 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24e12552c/72370a9307d948348d228dbcc457b846/FLAG7ffc41f56 [2018-10-27 02:27:18,890 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:27:18,890 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label53_true-unreach-call.c [2018-10-27 02:27:18,907 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24e12552c/72370a9307d948348d228dbcc457b846/FLAG7ffc41f56 [2018-10-27 02:27:18,921 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24e12552c/72370a9307d948348d228dbcc457b846 [2018-10-27 02:27:18,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:27:18,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:27:18,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:27:18,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:27:18,939 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:27:18,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:18" (1/1) ... [2018-10-27 02:27:18,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b806d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:18, skipping insertion in model container [2018-10-27 02:27:18,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:18" (1/1) ... [2018-10-27 02:27:18,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:27:19,035 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:27:19,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:27:19,501 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:27:19,671 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:27:19,689 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:27:19,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19 WrapperNode [2018-10-27 02:27:19,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:27:19,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:27:19,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:27:19,691 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:27:19,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:27:19,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:27:19,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:27:19,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:27:19,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:19,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:20,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:20,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 02:27:20,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:27:20,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:27:20,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:27:20,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:27:20,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:27:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:27:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:27:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:27:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:27:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:27:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:27:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:27:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:27:23,334 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:27:23,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:27:23 BoogieIcfgContainer [2018-10-27 02:27:23,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:27:23,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:27:23,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:27:23,339 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:27:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:27:18" (1/3) ... [2018-10-27 02:27:23,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec4a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:27:23, skipping insertion in model container [2018-10-27 02:27:23,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (2/3) ... [2018-10-27 02:27:23,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec4a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:27:23, skipping insertion in model container [2018-10-27 02:27:23,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:27:23" (3/3) ... [2018-10-27 02:27:23,343 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label53_true-unreach-call.c [2018-10-27 02:27:23,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:27:23,360 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:27:23,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:27:23,418 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:27:23,419 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:27:23,419 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:27:23,419 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:27:23,419 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:27:23,420 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:27:23,420 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:27:23,420 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:27:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 02:27:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-27 02:27:23,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:27:23,468 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:27:23,471 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:27:23,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:27:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1566545735, now seen corresponding path program 1 times [2018-10-27 02:27:23,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:27:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:23,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:27:23,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:23,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:27:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:27:23,977 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:27:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:27:23,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:27:23,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:27:23,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:27:24,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:27:24,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:27:24,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:27:24,023 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-27 02:27:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:27:27,334 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-27 02:27:27,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:27:27,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-27 02:27:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:27:27,369 INFO L225 Difference]: With dead ends: 737 [2018-10-27 02:27:27,369 INFO L226 Difference]: Without dead ends: 515 [2018-10-27 02:27:27,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:27:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-27 02:27:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-27 02:27:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 02:27:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 579 transitions. [2018-10-27 02:27:27,463 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 579 transitions. Word has length 49 [2018-10-27 02:27:27,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:27:27,463 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 579 transitions. [2018-10-27 02:27:27,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:27:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 579 transitions. [2018-10-27 02:27:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-27 02:27:27,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:27:27,472 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:27:27,472 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:27:27,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:27:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1784083955, now seen corresponding path program 1 times [2018-10-27 02:27:27,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:27:27,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:27,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:27:27,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:27,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:27:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:27:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:27:27,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:27:27,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:27:27,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:27:27,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:27:27,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:27:27,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:27:27,813 INFO L87 Difference]: Start difference. First operand 356 states and 579 transitions. Second operand 6 states. [2018-10-27 02:27:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:27:30,755 INFO L93 Difference]: Finished difference Result 1259 states and 2162 transitions. [2018-10-27 02:27:30,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:27:30,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-27 02:27:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:27:30,765 INFO L225 Difference]: With dead ends: 1259 [2018-10-27 02:27:30,766 INFO L226 Difference]: Without dead ends: 909 [2018-10-27 02:27:30,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:27:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-10-27 02:27:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 895. [2018-10-27 02:27:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-10-27 02:27:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1370 transitions. [2018-10-27 02:27:30,875 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1370 transitions. Word has length 124 [2018-10-27 02:27:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:27:30,876 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1370 transitions. [2018-10-27 02:27:30,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:27:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1370 transitions. [2018-10-27 02:27:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 02:27:30,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:27:30,894 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:27:30,895 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:27:30,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:27:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1601083443, now seen corresponding path program 1 times [2018-10-27 02:27:30,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:27:30,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:30,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:27:30,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:27:30,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:27:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:27:31,346 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:27:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 02:27:31,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:27:31,578 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:27:31,579 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-10-27 02:27:31,583 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:27:31,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:27:31,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:27:35,466 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:27:35,468 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 02:27:35,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:27:35,510 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:27:38,265 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 74.1% of their original sizes. [2018-10-27 02:27:38,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:27:44,279 INFO L415 sIntCurrentIteration]: We unified 155 AI predicates to 155 [2018-10-27 02:27:44,279 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:27:44,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:27:44,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 02:27:44,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:27:44,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 02:27:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 02:27:44,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 02:27:44,282 INFO L87 Difference]: Start difference. First operand 895 states and 1370 transitions. Second operand 10 states. [2018-10-27 02:27:56,496 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:28:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:28:31,860 INFO L93 Difference]: Finished difference Result 1933 states and 2971 transitions. [2018-10-27 02:28:31,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 02:28:31,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2018-10-27 02:28:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:28:31,867 INFO L225 Difference]: With dead ends: 1933 [2018-10-27 02:28:31,868 INFO L226 Difference]: Without dead ends: 1044 [2018-10-27 02:28:31,872 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 36 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-27 02:28:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2018-10-27 02:28:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1039. [2018-10-27 02:28:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-27 02:28:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1521 transitions. [2018-10-27 02:28:31,933 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1521 transitions. Word has length 156 [2018-10-27 02:28:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:28:31,933 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1521 transitions. [2018-10-27 02:28:31,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 02:28:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1521 transitions. [2018-10-27 02:28:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-27 02:28:31,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:28:31,939 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:28:31,940 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:28:31,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:28:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1457972223, now seen corresponding path program 1 times [2018-10-27 02:28:31,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:28:31,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:28:31,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:28:31,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:28:31,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:28:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:28:32,321 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:28:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-27 02:28:32,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:28:32,639 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:28:32,640 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-27 02:28:32,640 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [498], [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], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:28:32,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:28:32,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:28:34,163 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:28:50,106 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:28:50,106 INFO L272 AbstractInterpreter]: Visited 115 different actions 660 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 02:28:50,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:28:50,114 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:28:52,520 INFO L227 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 76.32% of their original sizes. [2018-10-27 02:28:52,520 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:29:08,379 INFO L415 sIntCurrentIteration]: We unified 226 AI predicates to 226 [2018-10-27 02:29:08,379 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:29:08,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:29:08,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-10-27 02:29:08,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:29:08,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 02:29:08,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 02:29:08,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-27 02:29:08,382 INFO L87 Difference]: Start difference. First operand 1039 states and 1521 transitions. Second operand 16 states. [2018-10-27 02:31:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:31:04,195 INFO L93 Difference]: Finished difference Result 2313 states and 3493 transitions. [2018-10-27 02:31:04,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 02:31:04,195 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 227 [2018-10-27 02:31:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:31:04,205 INFO L225 Difference]: With dead ends: 2313 [2018-10-27 02:31:04,205 INFO L226 Difference]: Without dead ends: 1424 [2018-10-27 02:31:04,209 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 190 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-10-27 02:31:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2018-10-27 02:31:04,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1339. [2018-10-27 02:31:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2018-10-27 02:31:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1854 transitions. [2018-10-27 02:31:04,344 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1854 transitions. Word has length 227 [2018-10-27 02:31:04,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:31:04,345 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1854 transitions. [2018-10-27 02:31:04,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 02:31:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1854 transitions. [2018-10-27 02:31:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 02:31:04,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:31:04,352 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:31:04,353 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:31:04,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:31:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1927539496, now seen corresponding path program 1 times [2018-10-27 02:31:04,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:31:04,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:31:04,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:31:04,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:31:04,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:31:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:31:04,693 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:31:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 85 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 02:31:04,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:31:04,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:31:04,889 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 02:31:04,890 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 02:31:04,894 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:31:04,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:31:05,659 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 02:31:06,787 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 02:31:06,787 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 02:31:06,789 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 02:31:06,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:31:06,789 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 02:31:06,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:31:06,797 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 02:31:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:31:06,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 02:31:06,943 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 02:31:07,144 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 02:31:07,144 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:31:07,150 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:31:07,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:31:07 BoogieIcfgContainer [2018-10-27 02:31:07,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:31:07,152 INFO L168 Benchmark]: Toolchain (without parser) took 228218.97 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 02:31:07,153 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-27 02:31:07,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.25 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:31:07,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 228.61 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-27 02:31:07,155 INFO L168 Benchmark]: Boogie Preprocessor took 122.27 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. [2018-10-27 02:31:07,156 INFO L168 Benchmark]: RCFGBuilder took 3292.03 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: 119.7 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2018-10-27 02:31:07,157 INFO L168 Benchmark]: TraceAbstraction took 223815.29 ms. Allocated memory was 2.2 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 2.6 GB in the end (delta: -569.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 02:31:07,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 756.25 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 228.61 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.27 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 3292.03 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: 119.7 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223815.29 ms. Allocated memory was 2.2 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 2.6 GB in the end (delta: -569.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was analyzing trace of length 237 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 169.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 629 SDtfs, 3331 SDslu, 435 SDs, 0 SdLazy, 3455 SolverSat, 812 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 409 GetRequests, 307 SyntacticMatches, 59 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1339occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9947031077637034 AbsIntWeakeningRatio, 0.12073490813648294 AbsIntAvgWeakeningVarsNumRemoved, 93.11548556430446 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 263 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 323261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 125/239 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown