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_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:57:35,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:57:35,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:57:35,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:57:35,400 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:57:35,401 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:57:35,404 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:57:35,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:57:35,409 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:57:35,411 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:57:35,412 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:57:35,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:57:35,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:57:35,416 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:57:35,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:57:35,420 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:57:35,421 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:57:35,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:57:35,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:57:35,437 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:57:35,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:57:35,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:57:35,446 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:57:35,462 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 00:57:35,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:57:35,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:57:35,486 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:57:35,487 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:57:35,487 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:57:35,487 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:57:35,487 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:57:35,487 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:57:35,488 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:57:35,488 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:57:35,488 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:57:35,488 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:57:35,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:57:35,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:57:35,489 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:57:35,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:57:35,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:57:35,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:57:35,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:57:35,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:57:35,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:57:35,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:57:35,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:57:35,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:57:35,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:57:35,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:57:35,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:57:35,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:57:35,492 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:57:35,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:57:35,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:57:35,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:57:35,493 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:57:35,493 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:57:35,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:57:35,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:57:35,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:57:35,583 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:57:35,583 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:57:35,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39_true-unreach-call.c [2018-10-24 00:57:35,651 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e7223a46/e84aa787cd13424c89ddc99285eb56a0/FLAG868bcce6b [2018-10-24 00:57:36,245 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:57:36,246 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label39_true-unreach-call.c [2018-10-24 00:57:36,261 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e7223a46/e84aa787cd13424c89ddc99285eb56a0/FLAG868bcce6b [2018-10-24 00:57:36,284 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e7223a46/e84aa787cd13424c89ddc99285eb56a0 [2018-10-24 00:57:36,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:57:36,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:57:36,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:57:36,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:57:36,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:57:36,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:57:36" (1/1) ... [2018-10-24 00:57:36,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2c02d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:36, skipping insertion in model container [2018-10-24 00:57:36,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:57:36" (1/1) ... [2018-10-24 00:57:36,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:57:36,397 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:57:36,873 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:57:36,878 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:57:37,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:57:37,043 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:57:37,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37 WrapperNode [2018-10-24 00:57:37,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:57:37,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:57:37,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:57:37,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:57:37,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:57:37,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:57:37,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:57:37,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:57:37,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (1/1) ... [2018-10-24 00:57:37,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:57:37,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:57:37,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:57:37,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:57:37,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (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 00:57:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:57:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:57:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:57:37,475 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:57:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:57:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:57:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:57:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:57:41,259 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:57:41,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:57:41 BoogieIcfgContainer [2018-10-24 00:57:41,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:57:41,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:57:41,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:57:41,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:57:41,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:57:36" (1/3) ... [2018-10-24 00:57:41,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22862902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:57:41, skipping insertion in model container [2018-10-24 00:57:41,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:57:37" (2/3) ... [2018-10-24 00:57:41,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22862902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:57:41, skipping insertion in model container [2018-10-24 00:57:41,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:57:41" (3/3) ... [2018-10-24 00:57:41,269 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label39_true-unreach-call.c [2018-10-24 00:57:41,280 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:57:41,290 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:57:41,308 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:57:41,346 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:57:41,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:57:41,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:57:41,347 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:57:41,347 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:57:41,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:57:41,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:57:41,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:57:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:57:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 00:57:41,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:57:41,393 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] [2018-10-24 00:57:41,396 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:57:41,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:41,402 INFO L82 PathProgramCache]: Analyzing trace with hash -113906311, now seen corresponding path program 1 times [2018-10-24 00:57:41,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:57:41,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:41,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:57:41,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:41,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:57:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:57:41,843 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 00:57:41,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:57:41,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:57:41,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:57:41,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:57:41,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:57:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:57:41,874 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:57:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:57:45,185 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:57:45,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:57:45,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-24 00:57:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:57:45,211 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:57:45,211 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:57:45,221 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 00:57:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:57:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-24 00:57:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:57:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-10-24 00:57:45,308 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 33 [2018-10-24 00:57:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:57:45,309 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-10-24 00:57:45,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:57:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-10-24 00:57:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 00:57:45,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:57:45,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:45,316 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:57:45,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:45,317 INFO L82 PathProgramCache]: Analyzing trace with hash -309675669, now seen corresponding path program 1 times [2018-10-24 00:57:45,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:57:45,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:45,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:57:45,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:45,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:57:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:57:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:57:45,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:57:45,758 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:57:45,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 105 with the following transitions: [2018-10-24 00:57:45,761 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], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:57:45,829 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:57:45,830 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:57:48,273 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:57:59,084 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:57:59,087 INFO L272 AbstractInterpreter]: Visited 78 different actions 438 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. [2018-10-24 00:57:59,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:59,133 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:58:01,678 INFO L232 lantSequenceWeakener]: Weakened 24 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-24 00:58:01,678 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:58:06,981 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:58:06,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:58:06,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2018-10-24 00:58:06,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:06,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 00:58:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 00:58:06,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-10-24 00:58:06,986 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 15 states. [2018-10-24 01:00:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:21,591 INFO L93 Difference]: Finished difference Result 1380 states and 2508 transitions. [2018-10-24 01:00:21,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 01:00:21,591 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2018-10-24 01:00:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:21,600 INFO L225 Difference]: With dead ends: 1380 [2018-10-24 01:00:21,600 INFO L226 Difference]: Without dead ends: 1030 [2018-10-24 01:00:21,604 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-10-24 01:00:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2018-10-24 01:00:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 944. [2018-10-24 01:00:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2018-10-24 01:00:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1254 transitions. [2018-10-24 01:00:21,735 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1254 transitions. Word has length 104 [2018-10-24 01:00:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:21,736 INFO L481 AbstractCegarLoop]: Abstraction has 944 states and 1254 transitions. [2018-10-24 01:00:21,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 01:00:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1254 transitions. [2018-10-24 01:00:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 01:00:21,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:21,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:00:21,745 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:21,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash -525228850, now seen corresponding path program 1 times [2018-10-24 01:00:21,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:21,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:21,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:21,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:21,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 01:00:22,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:00:22,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:00:22,110 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-24 01:00:22,110 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], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 01:00:22,115 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:00:22,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:00:23,315 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:00:29,242 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:00:29,243 INFO L272 AbstractInterpreter]: Visited 84 different actions 323 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:00:29,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:29,252 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:00:31,149 INFO L232 lantSequenceWeakener]: Weakened 24 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-24 01:00:31,150 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:00:37,588 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:00:37,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:00:37,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-10-24 01:00:37,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:37,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 01:00:37,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 01:00:37,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-10-24 01:00:37,590 INFO L87 Difference]: Start difference. First operand 944 states and 1254 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 01:01:31,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 01:01:31,654 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:01:31,660 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:01:31,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:01:31 BoogieIcfgContainer [2018-10-24 01:01:31,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:01:31,661 INFO L168 Benchmark]: Toolchain (without parser) took 235361.05 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 1.7 GB in the end (delta: -272.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 01:01:31,663 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:01:31,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.81 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:31,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 230.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:31,666 INFO L168 Benchmark]: Boogie Preprocessor took 116.87 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:01:31,667 INFO L168 Benchmark]: RCFGBuilder took 3868.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 133.3 MB). Peak memory consumption was 133.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:01:31,668 INFO L168 Benchmark]: TraceAbstraction took 230399.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 365.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 01:01:31,673 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.81 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 230.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.87 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3868.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 133.3 MB). Peak memory consumption was 133.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230399.08 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 365.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was constructing difference of abstraction (944states) and FLOYD_HOARE automaton (currently 15 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (325 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 230.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 192.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 396 SDtfs, 1926 SDslu, 388 SDs, 0 SdLazy, 3461 SolverSat, 652 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 299 GetRequests, 256 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=944occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.992541628122109 AbsIntWeakeningRatio, 0.16312056737588654 AbsIntAvgWeakeningVarsNumRemoved, 68.57801418439716 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 245 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 314 ConstructedInterpolants, 0 QuantifiedInterpolants, 228603 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 105/149 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown