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_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:08:24,165 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:08:24,167 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:08:24,180 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:08:24,180 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:08:24,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:08:24,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:08:24,185 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:08:24,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:08:24,187 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:08:24,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:08:24,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:08:24,191 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:08:24,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:08:24,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:08:24,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:08:24,197 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:08:24,199 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:08:24,208 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:08:24,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:08:24,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:08:24,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:08:24,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:08:24,237 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:08:24,237 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:08:24,239 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:08:24,240 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:08:24,241 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 [2018-10-24 21:08:24,260 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:08:24,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:08:24,261 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:08:24,261 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:08:24,263 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:08:24,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:08:24,263 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:08:24,263 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:08:24,264 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:08:24,264 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:08:24,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:08:24,264 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:08:24,265 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:08:24,265 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:08:24,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:08:24,266 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:08:24,267 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:08:24,267 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:08:24,267 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:08:24,267 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:08:24,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:08:24,268 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:08:24,268 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:08:24,268 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:08:24,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:08:24,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:08:24,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:08:24,270 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:08:24,270 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:08:24,270 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:08:24,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:08:24,271 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:08:24,271 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:08:24,271 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:08:24,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:08:24,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:08:24,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:08:24,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:08:24,331 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:08:24,332 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-10-24 21:08:24,392 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fbd674ef/0cf301299ae44125b0f886bd3b85ab7f/FLAGbdeaeb4bd [2018-10-24 21:08:25,021 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:08:25,022 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-10-24 21:08:25,042 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fbd674ef/0cf301299ae44125b0f886bd3b85ab7f/FLAGbdeaeb4bd [2018-10-24 21:08:25,057 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fbd674ef/0cf301299ae44125b0f886bd3b85ab7f [2018-10-24 21:08:25,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:08:25,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:08:25,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:25,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:08:25,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:08:25,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:25,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c671f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25, skipping insertion in model container [2018-10-24 21:08:25,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:25,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:08:25,175 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:08:25,797 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:25,801 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:08:25,961 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:25,982 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:08:25,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25 WrapperNode [2018-10-24 21:08:25,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:25,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:25,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:08:25,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:08:25,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:26,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:08:26,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:08:26,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:08:26,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (1/1) ... [2018-10-24 21:08:26,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:08:26,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:08:26,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:08:26,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:08:26,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (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 [2018-10-24 21:08:26,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:08:26,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:08:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:08:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:08:26,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:08:26,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:08:26,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:08:26,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:08:30,843 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:08:30,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:30 BoogieIcfgContainer [2018-10-24 21:08:30,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:08:30,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:08:30,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:08:30,848 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:08:30,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:08:25" (1/3) ... [2018-10-24 21:08:30,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b366526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:30, skipping insertion in model container [2018-10-24 21:08:30,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:25" (2/3) ... [2018-10-24 21:08:30,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b366526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:08:30, skipping insertion in model container [2018-10-24 21:08:30,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:08:30" (3/3) ... [2018-10-24 21:08:30,853 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19_true-unreach-call.c [2018-10-24 21:08:30,864 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:08:30,874 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:08:30,893 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:08:30,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:08:30,934 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:08:30,934 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:08:30,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:08:30,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:08:30,935 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:08:30,935 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:08:30,935 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:08:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:08:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-24 21:08:30,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:30,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:30,979 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:30,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:30,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1747963281, now seen corresponding path program 1 times [2018-10-24 21:08:30,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:31,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:31,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:31,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:31,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:31,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:31,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:08:31,543 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:31,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:08:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:08:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:31,569 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:08:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:34,697 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-10-24 21:08:34,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:08:34,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-10-24 21:08:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:34,725 INFO L225 Difference]: With dead ends: 982 [2018-10-24 21:08:34,725 INFO L226 Difference]: Without dead ends: 683 [2018-10-24 21:08:34,740 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 [2018-10-24 21:08:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-24 21:08:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-24 21:08:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-24 21:08:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-10-24 21:08:34,835 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 63 [2018-10-24 21:08:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:34,836 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-10-24 21:08:34,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:08:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-10-24 21:08:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 21:08:34,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:34,846 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, 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] [2018-10-24 21:08:34,846 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:34,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1450662836, now seen corresponding path program 1 times [2018-10-24 21:08:34,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:34,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:34,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:34,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:34,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:35,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:35,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 21:08:35,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:35,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:08:35,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:08:35,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:35,398 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-10-24 21:08:36,844 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 21:08:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:41,651 INFO L93 Difference]: Finished difference Result 1980 states and 3018 transitions. [2018-10-24 21:08:41,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:08:41,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2018-10-24 21:08:41,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:41,669 INFO L225 Difference]: With dead ends: 1980 [2018-10-24 21:08:41,669 INFO L226 Difference]: Without dead ends: 1303 [2018-10-24 21:08:41,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:08:41,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2018-10-24 21:08:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1246. [2018-10-24 21:08:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2018-10-24 21:08:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1784 transitions. [2018-10-24 21:08:41,743 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1784 transitions. Word has length 137 [2018-10-24 21:08:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:41,744 INFO L481 AbstractCegarLoop]: Abstraction has 1246 states and 1784 transitions. [2018-10-24 21:08:41,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:08:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1784 transitions. [2018-10-24 21:08:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 21:08:41,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:41,753 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:41,753 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:41,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash 507062389, now seen corresponding path program 1 times [2018-10-24 21:08:41,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:41,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:41,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:41,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:41,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:08:42,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:08:42,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:08:42,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:42,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:08:42,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:08:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:42,052 INFO L87 Difference]: Start difference. First operand 1246 states and 1784 transitions. Second operand 4 states. [2018-10-24 21:08:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:08:45,297 INFO L93 Difference]: Finished difference Result 4504 states and 6780 transitions. [2018-10-24 21:08:45,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:08:45,299 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-10-24 21:08:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:08:45,320 INFO L225 Difference]: With dead ends: 4504 [2018-10-24 21:08:45,321 INFO L226 Difference]: Without dead ends: 3264 [2018-10-24 21:08:45,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:08:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2018-10-24 21:08:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3234. [2018-10-24 21:08:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2018-10-24 21:08:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4526 transitions. [2018-10-24 21:08:45,422 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4526 transitions. Word has length 195 [2018-10-24 21:08:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:08:45,423 INFO L481 AbstractCegarLoop]: Abstraction has 3234 states and 4526 transitions. [2018-10-24 21:08:45,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:08:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4526 transitions. [2018-10-24 21:08:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 21:08:45,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:08:45,431 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:08:45,431 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:08:45,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:45,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1163566050, now seen corresponding path program 1 times [2018-10-24 21:08:45,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:08:45,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:45,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:08:45,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:08:45,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:08:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:08:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:08:45,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:08:45,648 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:08:45,649 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-24 21:08:45,651 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:08:45,717 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:08:45,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:08:47,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:08:48,391 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:08:48,393 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:08:48,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:08:48,427 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:08:51,065 INFO L232 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 73.92% of their original sizes. [2018-10-24 21:08:51,065 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:08:51,576 INFO L413 sIntCurrentIteration]: We have 209 unified AI predicates [2018-10-24 21:08:51,576 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:08:51,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:08:51,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:08:51,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:08:51,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:08:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:08:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:08:51,579 INFO L87 Difference]: Start difference. First operand 3234 states and 4526 transitions. Second operand 7 states. [2018-10-24 21:09:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:38,521 INFO L93 Difference]: Finished difference Result 6654 states and 9261 transitions. [2018-10-24 21:09:38,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:09:38,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2018-10-24 21:09:38,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:38,538 INFO L225 Difference]: With dead ends: 6654 [2018-10-24 21:09:38,538 INFO L226 Difference]: Without dead ends: 3426 [2018-10-24 21:09:38,549 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:09:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2018-10-24 21:09:38,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3424. [2018-10-24 21:09:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3424 states. [2018-10-24 21:09:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4727 transitions. [2018-10-24 21:09:38,644 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4727 transitions. Word has length 210 [2018-10-24 21:09:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:38,644 INFO L481 AbstractCegarLoop]: Abstraction has 3424 states and 4727 transitions. [2018-10-24 21:09:38,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:09:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4727 transitions. [2018-10-24 21:09:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 21:09:38,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:38,652 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:38,652 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:38,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:38,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2105312380, now seen corresponding path program 1 times [2018-10-24 21:09:38,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:38,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:38,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:38,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:38,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:09:39,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:09:39,536 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:09:39,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-24 21:09:39,537 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:09:39,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:09:39,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:09:40,636 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:09:55,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:09:55,176 INFO L272 AbstractInterpreter]: Visited 125 different actions 363 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:09:55,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:55,187 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:09:57,171 INFO L232 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 74.54% of their original sizes. [2018-10-24 21:09:57,171 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:10:04,575 INFO L413 sIntCurrentIteration]: We have 253 unified AI predicates [2018-10-24 21:10:04,576 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:10:04,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:10:04,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [10] total 27 [2018-10-24 21:10:04,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:04,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:10:04,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:10:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:10:04,578 INFO L87 Difference]: Start difference. First operand 3424 states and 4727 transitions. Second operand 19 states. [2018-10-24 21:11:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:11:34,793 INFO L93 Difference]: Finished difference Result 6850 states and 9495 transitions. [2018-10-24 21:11:34,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:11:34,793 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 254 [2018-10-24 21:11:34,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:11:34,810 INFO L225 Difference]: With dead ends: 6850 [2018-10-24 21:11:34,811 INFO L226 Difference]: Without dead ends: 3622 [2018-10-24 21:11:34,821 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2018-10-24 21:11:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2018-10-24 21:11:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3615. [2018-10-24 21:11:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3615 states. [2018-10-24 21:11:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4939 transitions. [2018-10-24 21:11:34,971 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4939 transitions. Word has length 254 [2018-10-24 21:11:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:11:34,971 INFO L481 AbstractCegarLoop]: Abstraction has 3615 states and 4939 transitions. [2018-10-24 21:11:34,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 21:11:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4939 transitions. [2018-10-24 21:11:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-24 21:11:34,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:11:34,980 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:11:34,981 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:11:34,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:34,981 INFO L82 PathProgramCache]: Analyzing trace with hash -558367176, now seen corresponding path program 1 times [2018-10-24 21:11:34,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:11:34,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:34,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:11:34,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:34,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:11:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:11:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:11:35,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:11:35,424 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:11:35,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-10-24 21:11:35,425 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], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:11:35,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:11:35,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:11:36,582 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:11:53,887 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:11:53,888 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:11:53,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:53,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:11:57,679 INFO L232 lantSequenceWeakener]: Weakened 122 states. On average, predicates are now at 74.89% of their original sizes. [2018-10-24 21:11:57,680 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:12:13,684 INFO L413 sIntCurrentIteration]: We have 263 unified AI predicates [2018-10-24 21:12:13,684 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:12:13,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:12:13,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [10] total 27 [2018-10-24 21:12:13,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:13,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:12:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:12:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:12:13,687 INFO L87 Difference]: Start difference. First operand 3615 states and 4939 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 21:12:26,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:12:26,846 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:12:26,853 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:12:26,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:12:26 BoogieIcfgContainer [2018-10-24 21:12:26,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:12:26,854 INFO L168 Benchmark]: Toolchain (without parser) took 241784.98 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:26,855 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:12:26,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 911.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:26,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -820.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:26,859 INFO L168 Benchmark]: Boogie Preprocessor took 167.44 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. [2018-10-24 21:12:26,860 INFO L168 Benchmark]: RCFGBuilder took 4415.58 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: 179.9 MB). Peak memory consumption was 179.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:26,861 INFO L168 Benchmark]: TraceAbstraction took 236008.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -196.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:26,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 911.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.90 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -820.8 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.44 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 4415.58 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: 179.9 MB). Peak memory consumption was 179.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236008.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -196.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (3615states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 235.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 163.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1242 SDtfs, 4074 SDslu, 980 SDs, 0 SdLazy, 7026 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 768 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 32.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3615occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9957288815909502 AbsIntWeakeningRatio, 0.11586206896551725 AbsIntAvgWeakeningVarsNumRemoved, 802.2358620689655 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 96 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1123 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1117 ConstructedInterpolants, 0 QuantifiedInterpolants, 1283689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 461/669 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown