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/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:45:23,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:45:23,370 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:45:23,388 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:45:23,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:45:23,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:45:23,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:45:23,396 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:45:23,398 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:45:23,401 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:45:23,403 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:45:23,403 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:45:23,404 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:45:23,406 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:45:23,407 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:45:23,415 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:45:23,416 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:45:23,422 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:45:23,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:45:23,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:45:23,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:45:23,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:45:23,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:45:23,442 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:45:23,442 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:45:23,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:45:23,447 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:45:23,447 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 01:45:23,474 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:45:23,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:45:23,475 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:45:23,478 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:45:23,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:45:23,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:45:23,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:45:23,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:45:23,479 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:45:23,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:45:23,480 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:45:23,480 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:45:23,481 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:45:23,481 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:45:23,482 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:45:23,483 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:45:23,483 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:45:23,483 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:45:23,483 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:45:23,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:45:23,485 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:45:23,485 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:45:23,485 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:45:23,486 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:45:23,486 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:45:23,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:45:23,486 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:45:23,487 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:45:23,487 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:45:23,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:45:23,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:45:23,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:45:23,592 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:45:23,592 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:45:23,593 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-24 01:45:23,678 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844236411/08b1532c727f4cd184e482199066d900/FLAG3ae65e30b [2018-10-24 01:45:24,300 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:45:24,303 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-24 01:45:24,322 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844236411/08b1532c727f4cd184e482199066d900/FLAG3ae65e30b [2018-10-24 01:45:24,344 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/844236411/08b1532c727f4cd184e482199066d900 [2018-10-24 01:45:24,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:45:24,360 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:45:24,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:45:24,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:45:24,367 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:45:24,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:45:24" (1/1) ... [2018-10-24 01:45:24,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a33b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:24, skipping insertion in model container [2018-10-24 01:45:24,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:45:24" (1/1) ... [2018-10-24 01:45:24,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:45:24,495 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:45:25,429 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:45:25,441 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:45:25,797 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:45:25,821 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:45:25,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25 WrapperNode [2018-10-24 01:45:25,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:45:25,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:45:25,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:45:25,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:45:25,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:25,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:45:26,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:45:26,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:45:26,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:45:26,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (1/1) ... [2018-10-24 01:45:26,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:45:26,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:45:26,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:45:26,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:45:26,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (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 01:45:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:45:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:45:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:45:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:45:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:45:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:45:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:45:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:45:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:45:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:45:34,063 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:45:34,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:45:34 BoogieIcfgContainer [2018-10-24 01:45:34,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:45:34,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:45:34,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:45:34,070 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:45:34,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:45:24" (1/3) ... [2018-10-24 01:45:34,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6223dc95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:45:34, skipping insertion in model container [2018-10-24 01:45:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:45:25" (2/3) ... [2018-10-24 01:45:34,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6223dc95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:45:34, skipping insertion in model container [2018-10-24 01:45:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:45:34" (3/3) ... [2018-10-24 01:45:34,075 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-10-24 01:45:34,087 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:45:34,102 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:45:34,121 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:45:34,163 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:45:34,164 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:45:34,164 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:45:34,164 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:45:34,164 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:45:34,165 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:45:34,165 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:45:34,165 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:45:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:45:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-24 01:45:34,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:45:34,213 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, 1, 1, 1, 1, 1] [2018-10-24 01:45:34,216 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:45:34,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:45:34,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-10-24 01:45:34,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:45:34,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:34,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:45:34,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:34,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:45:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:45:34,784 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 01:45:34,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:45:34,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:45:34,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:45:34,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:45:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:45:34,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:45:34,813 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 01:45:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:45:44,396 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-24 01:45:44,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:45:44,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-10-24 01:45:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:45:44,426 INFO L225 Difference]: With dead ends: 1510 [2018-10-24 01:45:44,426 INFO L226 Difference]: Without dead ends: 1066 [2018-10-24 01:45:44,439 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 01:45:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-24 01:45:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-24 01:45:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-24 01:45:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-24 01:45:44,585 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-10-24 01:45:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:45:44,586 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-24 01:45:44,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:45:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-24 01:45:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 01:45:44,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:45:44,595 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:45:44,595 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:45:44,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:45:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-10-24 01:45:44,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:45:44,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:44,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:45:44,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:44,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:45:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:45:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:45:44,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:45:44,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:45:44,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:45:44,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:45:44,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:45:44,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:45:44,926 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-10-24 01:45:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:45:53,290 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-10-24 01:45:53,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:45:53,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-24 01:45:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:45:53,313 INFO L225 Difference]: With dead ends: 3981 [2018-10-24 01:45:53,313 INFO L226 Difference]: Without dead ends: 2923 [2018-10-24 01:45:53,325 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 01:45:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-24 01:45:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-10-24 01:45:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-10-24 01:45:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-10-24 01:45:53,447 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-10-24 01:45:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:45:53,448 INFO L481 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-10-24 01:45:53,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:45:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-10-24 01:45:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-24 01:45:53,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:45:53,464 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, 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, 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 01:45:53,464 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:45:53,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:45:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-10-24 01:45:53,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:45:53,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:53,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:45:53,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:45:53,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:45:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:45:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 01:45:54,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:45:54,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:45:54,422 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-24 01:45:54,425 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:45:54,510 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:45:54,510 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:45:56,170 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:46:06,664 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:46:06,667 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:46:06,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:46:06,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:46:10,883 INFO L232 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.83% of their original sizes. [2018-10-24 01:46:10,884 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:47:38,630 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:47:38,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:47:38,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 01:47:38,632 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:47:38,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:47:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:47:38,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:47:38,633 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:49:31,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 01:49:31,994 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:49:32,000 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:49:32,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:49:32 BoogieIcfgContainer [2018-10-24 01:49:32,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:49:32,001 INFO L168 Benchmark]: Toolchain (without parser) took 247643.33 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 336.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,003 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:49:32,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1461.74 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 426.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,006 INFO L168 Benchmark]: Boogie Preprocessor took 261.60 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,006 INFO L168 Benchmark]: RCFGBuilder took 7553.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 320.3 MB). Peak memory consumption was 320.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,007 INFO L168 Benchmark]: TraceAbstraction took 237934.94 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:49:32,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1461.74 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 426.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.60 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7553.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 320.3 MB). Peak memory consumption was 320.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237934.94 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (2921states) and FLOYD_HOARE automaton (currently 20 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (773 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 237.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 131.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 814 SDtfs, 3412 SDslu, 392 SDs, 0 SdLazy, 5152 SolverSat, 1158 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 52.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 268 GetRequests, 142 SyntacticMatches, 97 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 91.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2921occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952253124449923 AbsIntWeakeningRatio, 0.10526315789473684 AbsIntAvgWeakeningVarsNumRemoved, 201.38866396761134 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 454 NumberOfCodeBlocks, 454 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 335446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 190/267 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown