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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:58:31,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:58:31,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:58:31,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:58:31,596 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:58:31,597 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:58:31,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:58:31,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:58:31,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:58:31,604 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:58:31,605 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:58:31,605 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:58:31,606 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:58:31,607 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:58:31,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:58:31,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:58:31,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:58:31,612 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:58:31,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:58:31,616 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:58:31,617 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:58:31,618 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:58:31,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 14:58:31,627 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:58:31,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:58:31,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:58:31,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:58:31,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:58:31,657 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:58:31,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:58:31,659 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:58:31,659 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:58:31,659 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:58:31,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:58:31,660 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:58:31,660 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:58:31,660 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:58:31,660 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:58:31,661 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:58:31,661 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:58:31,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:58:31,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:58:31,663 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:58:31,663 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:58:31,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:58:31,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:58:31,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:58:31,664 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:58:31,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:58:31,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:58:31,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:58:31,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:58:31,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:58:31,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:58:31,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:58:31,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:58:31,666 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:58:31,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:58:31,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:58:31,668 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:58:31,668 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:58:31,668 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:58:31,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:58:31,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:58:31,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:58:31,760 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:58:31,760 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:58:31,761 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-27 14:58:31,829 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f9974d40/b682d34868914587a689bcc6f1bf2348/FLAG4e5153d5c [2018-10-27 14:58:32,593 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:58:32,594 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-27 14:58:32,618 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f9974d40/b682d34868914587a689bcc6f1bf2348/FLAG4e5153d5c [2018-10-27 14:58:32,634 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9f9974d40/b682d34868914587a689bcc6f1bf2348 [2018-10-27 14:58:32,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:58:32,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:58:32,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:58:32,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:58:32,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:58:32,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:58:32" (1/1) ... [2018-10-27 14:58:32,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7670273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:32, skipping insertion in model container [2018-10-27 14:58:32,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:58:32" (1/1) ... [2018-10-27 14:58:32,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:58:32,817 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:58:33,781 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:58:33,786 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:58:34,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:58:34,247 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:58:34,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34 WrapperNode [2018-10-27 14:58:34,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:58:34,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:58:34,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:58:34,249 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:58:34,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:58:34,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:58:34,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:58:34,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:58:34,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... [2018-10-27 14:58:34,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:58:34,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:58:34,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:58:34,980 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:58:34,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:58:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:58:35,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:58:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:58:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:58:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:58:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:58:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:58:35,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:58:35,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:58:35,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:58:47,252 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:58:47,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:47 BoogieIcfgContainer [2018-10-27 14:58:47,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:58:47,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:58:47,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:58:47,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:58:47,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:58:32" (1/3) ... [2018-10-27 14:58:47,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34780d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:47, skipping insertion in model container [2018-10-27 14:58:47,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:34" (2/3) ... [2018-10-27 14:58:47,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34780d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:47, skipping insertion in model container [2018-10-27 14:58:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:47" (3/3) ... [2018-10-27 14:58:47,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22_true-unreach-call.c [2018-10-27 14:58:47,278 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:58:47,287 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:58:47,305 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:58:47,353 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:58:47,353 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:58:47,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:58:47,354 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:58:47,354 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:58:47,354 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:58:47,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:58:47,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:58:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 14:58:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-27 14:58:47,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:58:47,415 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] [2018-10-27 14:58:47,418 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:58:47,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:58:47,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1623542220, now seen corresponding path program 1 times [2018-10-27 14:58:47,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:58:47,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:47,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:58:47,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:47,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:58:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:58:48,027 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 14:58:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:58:48,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:58:48,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:58:48,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:58:48,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:58:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:58:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:58:48,072 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 14:58:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:58:59,159 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-27 14:58:59,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:58:59,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-27 14:58:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:58:59,193 INFO L225 Difference]: With dead ends: 2133 [2018-10-27 14:58:59,194 INFO L226 Difference]: Without dead ends: 1523 [2018-10-27 14:58:59,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:58:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-27 14:58:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-27 14:58:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-27 14:58:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-27 14:58:59,359 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 58 [2018-10-27 14:58:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:58:59,360 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-27 14:58:59,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:58:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-27 14:58:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 14:58:59,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:58:59,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:58:59,374 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:58:59,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:58:59,375 INFO L82 PathProgramCache]: Analyzing trace with hash 429401034, now seen corresponding path program 1 times [2018-10-27 14:58:59,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:58:59,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:59,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:58:59,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:59,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:58:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:58:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:58:59,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:58:59,738 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:58:59,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 134 with the following transitions: [2018-10-27 14:58:59,741 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1074], [1076], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 14:58:59,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:58:59,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:59:00,184 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:59:02,953 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:59:02,954 INFO L272 AbstractInterpreter]: Visited 82 different actions 462 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 26 variables. [2018-10-27 14:59:02,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:02,997 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:59:03,703 INFO L227 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 76.18% of their original sizes. [2018-10-27 14:59:03,704 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:59:04,021 INFO L415 sIntCurrentIteration]: We unified 132 AI predicates to 132 [2018-10-27 14:59:04,021 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:59:04,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:59:04,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 14:59:04,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:59:04,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 14:59:04,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 14:59:04,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:59:04,025 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 9 states. Received shutdown request... [2018-10-27 15:02:51,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 15:02:51,252 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:02:51,259 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:02:51,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:02:51 BoogieIcfgContainer [2018-10-27 15:02:51,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:02:51,260 INFO L168 Benchmark]: Toolchain (without parser) took 258612.12 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -545.9 MB). Peak memory consumption was 693.0 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,261 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-27 15:02:51,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1596.92 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 477.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,264 INFO L168 Benchmark]: Boogie Preprocessor took 253.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,265 INFO L168 Benchmark]: RCFGBuilder took 12274.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.0 MB). Peak memory consumption was 459.0 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,266 INFO L168 Benchmark]: TraceAbstraction took 244004.57 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 463.5 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -256.2 MB). Peak memory consumption was 207.3 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:51,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1596.92 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 477.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12274.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 459.0 MB). Peak memory consumption was 459.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244004.57 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 463.5 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -256.2 MB). Peak memory consumption was 207.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 161). Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (1146 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 243.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 238.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 663 SDtfs, 1918 SDslu, 571 SDs, 0 SdLazy, 3727 SolverSat, 874 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9967850940232363 AbsIntWeakeningRatio, 0.1590909090909091 AbsIntAvgWeakeningVarsNumRemoved, 22.916666666666668 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 86343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown