java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:08:55,499 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:08:55,501 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:08:55,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:08:55,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:08:55,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:08:55,524 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:08:55,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:08:55,531 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:08:55,532 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:08:55,534 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:08:55,535 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:08:55,536 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:08:55,537 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:08:55,538 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:08:55,544 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:08:55,545 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:08:55,547 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:08:55,549 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:08:55,550 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:08:55,551 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:08:55,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:08:55,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:08:55,555 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:08:55,555 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:08:55,556 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:08:55,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:08:55,558 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:08:55,560 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:08:55,561 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:08:55,561 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:08:55,562 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:08:55,564 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:08:55,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:08:55,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:08:55,586 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:08:55,586 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:08:55,586 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:08:55,586 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:08:55,587 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:08:55,587 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:08:55,587 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:08:55,587 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:08:55,588 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:08:55,588 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:08:55,589 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:08:55,589 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:08:55,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:08:55,589 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:08:55,589 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:08:55,590 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:08:55,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:08:55,591 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:08:55,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:08:55,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:08:55,592 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:08:55,592 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:08:55,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:08:55,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:08:55,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:08:55,593 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:08:55,593 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:08:55,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:08:55,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:08:55,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:08:55,594 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:08:55,594 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:08:55,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:08:55,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:08:55,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:08:55,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:08:55,685 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:08:55,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label21_true-unreach-call.c [2018-10-24 21:08:55,757 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ae0f13f3/ddbe8705cc9940c084a55065c7518bdb/FLAGe1f573d8b [2018-10-24 21:08:56,391 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:08:56,392 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label21_true-unreach-call.c [2018-10-24 21:08:56,411 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ae0f13f3/ddbe8705cc9940c084a55065c7518bdb/FLAGe1f573d8b [2018-10-24 21:08:56,427 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5ae0f13f3/ddbe8705cc9940c084a55065c7518bdb [2018-10-24 21:08:56,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:08:56,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:08:56,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:56,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:08:56,445 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:08:56,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:56" (1/1) ... [2018-10-24 21:08:56,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:56, skipping insertion in model container [2018-10-24 21:08:56,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:08:56" (1/1) ... [2018-10-24 21:08:56,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:08:56,530 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:08:57,097 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:57,102 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:08:57,313 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:08:57,335 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:08:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57 WrapperNode [2018-10-24 21:08:57,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:08:57,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:57,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:08:57,337 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:08:57,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:08:57,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:08:57,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:08:57,685 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:08:57,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... [2018-10-24 21:08:57,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:08:57,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:08:57,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:08:57,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:08:57,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:08:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:08:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:08:57,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:08:57,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:08:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:08:57,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:08:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:08:57,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:09:02,543 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:09:02,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:09:02 BoogieIcfgContainer [2018-10-24 21:09:02,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:09:02,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:09:02,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:09:02,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:09:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:08:56" (1/3) ... [2018-10-24 21:09:02,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db05034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:09:02, skipping insertion in model container [2018-10-24 21:09:02,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:08:57" (2/3) ... [2018-10-24 21:09:02,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db05034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:09:02, skipping insertion in model container [2018-10-24 21:09:02,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:09:02" (3/3) ... [2018-10-24 21:09:02,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label21_true-unreach-call.c [2018-10-24 21:09:02,565 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:09:02,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:09:02,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:09:02,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:09:02,634 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:09:02,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:09:02,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:09:02,635 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:09:02,635 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:09:02,635 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:09:02,635 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:09:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:09:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 21:09:02,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:02,674 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] [2018-10-24 21:09:02,676 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:02,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:02,683 INFO L82 PathProgramCache]: Analyzing trace with hash -470198511, now seen corresponding path program 1 times [2018-10-24 21:09:02,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:02,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:02,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:02,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:02,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:09:03,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:09:03,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:09:03,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:03,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:09:03,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:09:03,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:03,179 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:09:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:06,246 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-10-24 21:09:06,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:09:06,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-24 21:09:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:06,273 INFO L225 Difference]: With dead ends: 982 [2018-10-24 21:09:06,274 INFO L226 Difference]: Without dead ends: 683 [2018-10-24 21:09:06,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-24 21:09:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-24 21:09:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-24 21:09:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-10-24 21:09:06,385 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 31 [2018-10-24 21:09:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:06,386 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-10-24 21:09:06,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:09:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-10-24 21:09:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 21:09:06,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:06,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:06,393 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:06,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:06,393 INFO L82 PathProgramCache]: Analyzing trace with hash 738270156, now seen corresponding path program 1 times [2018-10-24 21:09:06,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:06,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:06,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:06,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:06,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:09:06,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:09:06,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:09:06,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:06,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:09:06,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:09:06,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:06,711 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-10-24 21:09:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:10,865 INFO L93 Difference]: Finished difference Result 2514 states and 3863 transitions. [2018-10-24 21:09:10,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:09:10,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-24 21:09:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:10,888 INFO L225 Difference]: With dead ends: 2514 [2018-10-24 21:09:10,889 INFO L226 Difference]: Without dead ends: 1837 [2018-10-24 21:09:10,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2018-10-24 21:09:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1632. [2018-10-24 21:09:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2018-10-24 21:09:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2352 transitions. [2018-10-24 21:09:11,001 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2352 transitions. Word has length 105 [2018-10-24 21:09:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:11,002 INFO L481 AbstractCegarLoop]: Abstraction has 1632 states and 2352 transitions. [2018-10-24 21:09:11,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:09:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2352 transitions. [2018-10-24 21:09:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 21:09:11,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:11,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:11,010 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:11,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -528233849, now seen corresponding path program 1 times [2018-10-24 21:09:11,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:11,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:11,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:11,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:11,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:09:11,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:09:11,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 21:09:11,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:11,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:09:11,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:09:11,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:09:11,410 INFO L87 Difference]: Start difference. First operand 1632 states and 2352 transitions. Second operand 7 states. [2018-10-24 21:09:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:09:18,123 INFO L93 Difference]: Finished difference Result 4838 states and 7409 transitions. [2018-10-24 21:09:18,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:09:18,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2018-10-24 21:09:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:09:18,157 INFO L225 Difference]: With dead ends: 4838 [2018-10-24 21:09:18,158 INFO L226 Difference]: Without dead ends: 3017 [2018-10-24 21:09:18,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:09:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2018-10-24 21:09:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2797. [2018-10-24 21:09:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2797 states. [2018-10-24 21:09:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4031 transitions. [2018-10-24 21:09:18,317 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4031 transitions. Word has length 106 [2018-10-24 21:09:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:09:18,318 INFO L481 AbstractCegarLoop]: Abstraction has 2797 states and 4031 transitions. [2018-10-24 21:09:18,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:09:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4031 transitions. [2018-10-24 21:09:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 21:09:18,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:18,327 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, 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] [2018-10-24 21:09:18,330 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:18,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:18,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1578565365, now seen corresponding path program 1 times [2018-10-24 21:09:18,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:18,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:18,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:18,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:18,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:18,644 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:09:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:09:18,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:09:18,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:09:18,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 21:09:18,954 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [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], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:09:19,020 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:09:19,020 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:09:20,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:09:21,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:09:21,312 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:09:21,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:21,346 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:09:23,399 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 73.35% of their original sizes. [2018-10-24 21:09:23,400 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:09:23,837 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 21:09:23,837 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:09:23,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:09:23,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:09:23,839 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:23,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:09:23,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:09:23,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:09:23,840 INFO L87 Difference]: Start difference. First operand 2797 states and 4031 transitions. Second operand 7 states. [2018-10-24 21:10:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:14,939 INFO L93 Difference]: Finished difference Result 5780 states and 8270 transitions. [2018-10-24 21:10:14,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:10:14,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-10-24 21:10:14,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:14,956 INFO L225 Difference]: With dead ends: 5780 [2018-10-24 21:10:14,956 INFO L226 Difference]: Without dead ends: 2989 [2018-10-24 21:10:14,966 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:10:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2018-10-24 21:10:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2987. [2018-10-24 21:10:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2987 states. [2018-10-24 21:10:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 4231 transitions. [2018-10-24 21:10:15,053 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 4231 transitions. Word has length 179 [2018-10-24 21:10:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:15,054 INFO L481 AbstractCegarLoop]: Abstraction has 2987 states and 4231 transitions. [2018-10-24 21:10:15,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:10:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 4231 transitions. [2018-10-24 21:10:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 21:10:15,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:15,059 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:10:15,060 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:15,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:15,060 INFO L82 PathProgramCache]: Analyzing trace with hash 649903183, now seen corresponding path program 1 times [2018-10-24 21:10:15,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:15,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:15,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:15,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:15,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:15,569 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 21:10:16,159 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 21:10:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 52 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:16,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:10:16,497 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:10:16,497 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-24 21:10:16,498 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [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], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:10:16,505 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:10:16,505 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:10:19,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:10:31,037 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:10:31,037 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:10:31,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:31,045 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:10:34,087 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 73.63% of their original sizes. [2018-10-24 21:10:34,088 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:10:38,111 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-24 21:10:38,112 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:10:38,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:10:38,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 23 [2018-10-24 21:10:38,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:38,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 21:10:38,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 21:10:38,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-10-24 21:10:38,114 INFO L87 Difference]: Start difference. First operand 2987 states and 4231 transitions. Second operand 15 states. [2018-10-24 21:12:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:12:48,097 INFO L93 Difference]: Finished difference Result 5976 states and 8534 transitions. [2018-10-24 21:12:48,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:12:48,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 223 [2018-10-24 21:12:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:12:48,113 INFO L225 Difference]: With dead ends: 5976 [2018-10-24 21:12:48,114 INFO L226 Difference]: Without dead ends: 3185 [2018-10-24 21:12:48,123 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 235 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2018-10-24 21:12:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2018-10-24 21:12:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3178. [2018-10-24 21:12:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2018-10-24 21:12:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 4443 transitions. [2018-10-24 21:12:48,266 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 4443 transitions. Word has length 223 [2018-10-24 21:12:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:12:48,267 INFO L481 AbstractCegarLoop]: Abstraction has 3178 states and 4443 transitions. [2018-10-24 21:12:48,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 21:12:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 4443 transitions. [2018-10-24 21:12:48,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 21:12:48,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:12:48,274 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:12:48,274 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:12:48,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:48,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2030668285, now seen corresponding path program 1 times [2018-10-24 21:12:48,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:12:48,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:48,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:12:48,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:48,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:12:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:12:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 21:12:48,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:12:48,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:12:48,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:48,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:12:48,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:12:48,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:12:48,603 INFO L87 Difference]: Start difference. First operand 3178 states and 4443 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 21:12:50,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:12:50,668 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:12:50,674 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:12:50,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:12:50 BoogieIcfgContainer [2018-10-24 21:12:50,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:12:50,675 INFO L168 Benchmark]: Toolchain (without parser) took 234236.51 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:50,677 INFO L168 Benchmark]: CDTParser took 0.19 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 21:12:50,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:50,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 348.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -830.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:50,679 INFO L168 Benchmark]: Boogie Preprocessor took 144.08 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 21:12:50,679 INFO L168 Benchmark]: RCFGBuilder took 4715.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:12:50,680 INFO L168 Benchmark]: TraceAbstraction took 228128.69 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -678.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:12:50,685 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 894.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 348.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -830.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.08 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 4715.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228128.69 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -678.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (3178states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (4382 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 228.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 197.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1491 SDtfs, 4003 SDslu, 1303 SDs, 0 SdLazy, 8506 SolverSat, 1267 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 443 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3178occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949603174603179 AbsIntWeakeningRatio, 0.14 AbsIntAvgWeakeningVarsNumRemoved, 636.895 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 434 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 877 NumberOfCodeBlocks, 877 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 871 ConstructedInterpolants, 0 QuantifiedInterpolants, 716242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 286/425 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown