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/Problem13_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:28:56,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:28:56,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:28:56,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:28:56,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:28:56,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:28:56,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:28:56,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:28:56,582 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:28:56,583 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:28:56,584 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:28:56,584 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:28:56,585 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:28:56,586 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:28:56,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:28:56,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:28:56,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:28:56,590 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:28:56,592 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:28:56,594 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:28:56,595 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:28:56,596 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:28:56,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:28:56,606 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:28:56,606 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:28:56,607 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:28:56,607 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:28:56,608 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 01:28:56,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:28:56,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:28:56,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:28:56,629 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:28:56,630 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:28:56,630 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:28:56,630 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:28:56,630 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:28:56,631 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:28:56,631 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:28:56,631 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:28:56,631 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:28:56,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:28:56,632 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:28:56,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:28:56,633 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:28:56,633 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:28:56,633 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:28:56,633 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:28:56,634 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:28:56,634 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:28:56,634 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:28:56,634 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:28:56,634 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:28:56,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:28:56,635 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:28:56,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:28:56,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:28:56,636 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:28:56,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:28:56,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:28:56,637 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:28:56,637 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:28:56,637 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:28:56,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:28:56,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:28:56,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:28:56,710 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:28:56,711 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:28:56,711 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-24 01:28:56,774 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72616394f/ee3e681e89434055959716661532d14b/FLAG9361a7017 [2018-10-24 01:28:57,541 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:28:57,542 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-24 01:28:57,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72616394f/ee3e681e89434055959716661532d14b/FLAG9361a7017 [2018-10-24 01:28:57,602 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/72616394f/ee3e681e89434055959716661532d14b [2018-10-24 01:28:57,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:28:57,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:28:57,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:28:57,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:28:57,628 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:28:57,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:28:57" (1/1) ... [2018-10-24 01:28:57,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d2ecf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:57, skipping insertion in model container [2018-10-24 01:28:57,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:28:57" (1/1) ... [2018-10-24 01:28:57,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:28:57,817 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:28:59,253 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:28:59,258 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:28:59,887 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:28:59,927 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:28:59,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59 WrapperNode [2018-10-24 01:28:59,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:28:59,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:28:59,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:28:59,929 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:28:59,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:29:00,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:29:00,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:29:00,475 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:29:00,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (1/1) ... [2018-10-24 01:29:00,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:29:00,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:29:00,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:29:00,771 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:29:00,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (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 01:29:00,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:29:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:29:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:29:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:29:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:29:00,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:29:00,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:29:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:29:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:29:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:29:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:29:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:29:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:29:00,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:29:11,591 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:29:11,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:29:11 BoogieIcfgContainer [2018-10-24 01:29:11,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:29:11,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:29:11,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:29:11,597 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:29:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:28:57" (1/3) ... [2018-10-24 01:29:11,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc3823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:29:11, skipping insertion in model container [2018-10-24 01:29:11,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:28:59" (2/3) ... [2018-10-24 01:29:11,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc3823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:29:11, skipping insertion in model container [2018-10-24 01:29:11,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:29:11" (3/3) ... [2018-10-24 01:29:11,601 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-10-24 01:29:11,611 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:29:11,625 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:29:11,643 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:29:11,699 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:29:11,699 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:29:11,699 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:29:11,699 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:29:11,700 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:29:11,700 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:29:11,700 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:29:11,700 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:29:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:29:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 01:29:11,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:29:11,764 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] [2018-10-24 01:29:11,767 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:29:11,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:29:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238907, now seen corresponding path program 1 times [2018-10-24 01:29:11,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:29:11,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:11,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:29:11,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:11,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:29:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:29:12,342 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 01:29:12,406 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 01:29:12,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:29:12,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:29:12,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:29:12,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:29:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:29:12,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:29:12,457 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 01:29:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:29:26,379 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-24 01:29:26,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:29:26,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-24 01:29:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:29:26,433 INFO L225 Difference]: With dead ends: 4063 [2018-10-24 01:29:26,433 INFO L226 Difference]: Without dead ends: 2937 [2018-10-24 01:29:26,446 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 01:29:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-24 01:29:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-24 01:29:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-24 01:29:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-24 01:29:26,650 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 65 [2018-10-24 01:29:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:29:26,651 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-24 01:29:26,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:29:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-24 01:29:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 01:29:26,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:29:26,660 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, 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 01:29:26,660 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:29:26,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:29:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash -617731529, now seen corresponding path program 1 times [2018-10-24 01:29:26,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:29:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:29:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:26,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:29:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:29:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:29:27,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:29:27,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:29:27,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:29:27,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:29:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:29:27,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:29:27,012 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-24 01:29:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:29:46,098 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-10-24 01:29:46,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:29:46,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 01:29:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:29:46,139 INFO L225 Difference]: With dead ends: 7277 [2018-10-24 01:29:46,139 INFO L226 Difference]: Without dead ends: 5301 [2018-10-24 01:29:46,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:29:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-10-24 01:29:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-10-24 01:29:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-10-24 01:29:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-10-24 01:29:46,297 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 136 [2018-10-24 01:29:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:29:46,298 INFO L481 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-10-24 01:29:46,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:29:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-10-24 01:29:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 01:29:46,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:29:46,309 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, 1, 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 01:29:46,309 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:29:46,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:29:46,309 INFO L82 PathProgramCache]: Analyzing trace with hash -824137274, now seen corresponding path program 1 times [2018-10-24 01:29:46,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:29:46,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:46,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:29:46,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:29:46,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:29:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:29:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:29:46,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:29:46,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:29:46,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:29:46,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:29:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:29:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:29:46,592 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-10-24 01:30:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:30:03,523 INFO L93 Difference]: Finished difference Result 13917 states and 22504 transitions. [2018-10-24 01:30:03,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:30:03,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 01:30:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:30:03,570 INFO L225 Difference]: With dead ends: 13917 [2018-10-24 01:30:03,570 INFO L226 Difference]: Without dead ends: 8671 [2018-10-24 01:30:03,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:30:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2018-10-24 01:30:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 8605. [2018-10-24 01:30:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-24 01:30:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12805 transitions. [2018-10-24 01:30:03,814 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12805 transitions. Word has length 139 [2018-10-24 01:30:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:30:03,814 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12805 transitions. [2018-10-24 01:30:03,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:30:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12805 transitions. [2018-10-24 01:30:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 01:30:03,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:30:03,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:03,820 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:30:03,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:03,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2024947088, now seen corresponding path program 1 times [2018-10-24 01:30:03,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:30:03,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:03,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:30:03,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:03,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:30:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:30:04,122 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:30:04,557 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:30:04,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:30:04,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:30:04,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:30:04,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:30:04,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:30:04,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:30:04,560 INFO L87 Difference]: Start difference. First operand 8605 states and 12805 transitions. Second operand 6 states. [2018-10-24 01:30:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:30:19,223 INFO L93 Difference]: Finished difference Result 27258 states and 42326 transitions. [2018-10-24 01:30:19,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:30:19,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 01:30:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:30:19,322 INFO L225 Difference]: With dead ends: 27258 [2018-10-24 01:30:19,323 INFO L226 Difference]: Without dead ends: 18659 [2018-10-24 01:30:19,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:30:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18659 states. [2018-10-24 01:30:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18659 to 18567. [2018-10-24 01:30:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18567 states. [2018-10-24 01:30:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18567 states to 18567 states and 25960 transitions. [2018-10-24 01:30:19,838 INFO L78 Accepts]: Start accepts. Automaton has 18567 states and 25960 transitions. Word has length 170 [2018-10-24 01:30:19,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:30:19,839 INFO L481 AbstractCegarLoop]: Abstraction has 18567 states and 25960 transitions. [2018-10-24 01:30:19,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:30:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 18567 states and 25960 transitions. [2018-10-24 01:30:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 01:30:19,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:30:19,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:19,856 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:30:19,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash -658364123, now seen corresponding path program 1 times [2018-10-24 01:30:19,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:30:19,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:19,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:30:19,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:19,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:30:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:30:20,215 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:30:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:30:20,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:30:20,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:30:20,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:30:20,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:30:20,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:30:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:30:20,486 INFO L87 Difference]: Start difference. First operand 18567 states and 25960 transitions. Second operand 6 states. [2018-10-24 01:30:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:30:34,742 INFO L93 Difference]: Finished difference Result 48021 states and 74469 transitions. [2018-10-24 01:30:34,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:30:34,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-10-24 01:30:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:30:34,914 INFO L225 Difference]: With dead ends: 48021 [2018-10-24 01:30:34,915 INFO L226 Difference]: Without dead ends: 29460 [2018-10-24 01:30:34,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:30:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2018-10-24 01:30:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29306. [2018-10-24 01:30:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29306 states. [2018-10-24 01:30:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29306 states to 29306 states and 42020 transitions. [2018-10-24 01:30:35,781 INFO L78 Accepts]: Start accepts. Automaton has 29306 states and 42020 transitions. Word has length 233 [2018-10-24 01:30:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:30:35,781 INFO L481 AbstractCegarLoop]: Abstraction has 29306 states and 42020 transitions. [2018-10-24 01:30:35,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:30:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 29306 states and 42020 transitions. [2018-10-24 01:30:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 01:30:35,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:30:35,799 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, 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] [2018-10-24 01:30:35,800 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:30:35,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash -16938847, now seen corresponding path program 1 times [2018-10-24 01:30:35,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:30:35,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:35,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:30:35,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:35,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:30:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:30:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:30:36,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:30:36,179 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:30:36,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-24 01:30:36,185 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3047], [3049], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:30:36,292 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:30:36,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:30:43,612 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:30:43,614 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:30:43,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:43,644 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:30:48,511 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 71.93% of their original sizes. [2018-10-24 01:30:48,511 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:30:50,030 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:30:50,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:30:50,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-10-24 01:30:50,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:30:50,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:30:50,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:30:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:30:50,034 INFO L87 Difference]: Start difference. First operand 29306 states and 42020 transitions. Second operand 11 states. [2018-10-24 01:31:20,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:32:32,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:32:32,230 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:32:32,237 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:32:32,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:32:32 BoogieIcfgContainer [2018-10-24 01:32:32,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:32:32,239 INFO L168 Benchmark]: Toolchain (without parser) took 214621.24 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -494.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,241 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:32:32,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2308.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 545.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,243 INFO L168 Benchmark]: Boogie Preprocessor took 296.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,244 INFO L168 Benchmark]: RCFGBuilder took 10821.29 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.2 MB). Peak memory consumption was 660.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,245 INFO L168 Benchmark]: TraceAbstraction took 200644.77 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 01:32:32,252 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2308.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 545.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 296.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10821.29 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 173.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.2 MB). Peak memory consumption was 660.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200644.77 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (29306states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5419 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 200.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 181.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2619 SDtfs, 19897 SDslu, 2847 SDs, 0 SdLazy, 30316 SolverSat, 9341 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 135.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 248 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29306occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960439560439559 AbsIntWeakeningRatio, 0.11020408163265306 AbsIntAvgWeakeningVarsNumRemoved, 26.97142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1316 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 671693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 353/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown